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Sample records for acier faiblement allie

  1. Caractérisation des fissures secondaires dans un acier faiblement allié par EBSD

    Haušild, P.; Nohava, Jiří; Bompard, P.

    Paříž, 2001. s. 141. ISSN 0035-1563. [Société francaise de Métallurgie et de Matériaux.. 29.10.2001-31.10.2001, Paříž] Institutional research plan: CEZ:AV0Z2043910 Keywords : EBSD, secondary cracks, bainitic steel Subject RIV: JK - Corrosion ; Surface Treatment of Materials

  2. Initiation of cleavage in a low alloy steel: effect of a ductile damage localized around inclusions; Declenchement du clivage dans un acier faiblement allie: role de l'endommagement ductile localise autour des inclusions

    Carassou, S

    2000-07-01

    The fracture mechanism in a low alloy steel, used in the pressurised water reactor vessel, has been studied in the ductile to brittle transition temperature range. We used the local approach of fracture in conjunction with both fractographic observations and numerical simulations. Previous studies suggested the onset of cleavage to be favoured by the presence of nearby manganese sulphide (MnS) clusters: the ductile damaged zone localised inside a cluster increases the stress around it, and so contribute to the triggering of cleavage due to nearby classical sites, like carbides. The experimental study of size dependence and anisotropy on the global fracture behaviour, together with fractographic observations, give here the proof of the influence of MnS clusters on the onset of cleavage in this steel. Fracture behaviour of pre-cracked specimens tested in the transition regime has then been simulated, by three dimensional finite element method computations. Ductile tearing process preceding the cleavage onset at those temperatures regime was well reproduced by the Rousselier's model. Failure probabilities, related to given stress states, has been given by post-processor calculations, using a probabilistic model based on the specific cleavage fracture process. Fracture toughness scatter of the steel, tested in the transition regime, is then well reproduced by those calculations. However, the critical cleavage stress of an elementary volume, that scales for the fracture process, is still assumed to be temperature dependant. Numerical simulations of the local fracture process suggest that this temperature effect can partly be explained by the temperature dependant decrease of the stress amplification due to the MnS clusters. (author)

  3. ``Global and local approaches of fracture in the ductile to brittle regime of a low alloy steel``; ``Approches globale et locale de la rupture dans le domaine de transition fragile-ductile d`un acier faiblement allie``

    Renevey, S

    1998-12-31

    The study is a contribution to the prediction of flow fracture toughness of low alloy steel and to a better knowledge of fracture behavior in the ductile to brittle transition region. Experiments were performed on a nozzle cut-off from a pressurized water reactor vessel made of steels A508C13 type steel. Axisymmetrical notched specimens were tested to study the fracture onset in a volume element while pre-cracked specimens were used to investigate cleavage fracture after stable crack growth. Systematic observations of fracture surfaces showed manganese sulfide inclusions (MnS) at cleavage sites or in the vicinity. The experimental results were used for modelling by the local approach to fracture. In a volume element the fracture is described by an original probabilistic model. This model is based on volume fraction distributions of MnS inclusions gathered in clusters and on the assumption of a competition without interaction between ductile and cleavage fracture modes. This model was applied to pre-cracked specimens (CT specimens). It is able to describe the scatter in the toughness after a small stable crack growth if a temperature effect on the cleavage stress is assumed. So, the modelling is able to give a lower bound of fracture toughness as a function of temperature. (author) 100 refs.

  4. Simulations of local mechanical fields. Application to the ductile/brittle transition in low alloy steels; Simulations des champs mecaniques locaux. Applications a la transition ductile / fragile dans les aciers faiblement allies

    Libert, M.; Rey, C. [Ecole Centrale de Paris, Lab. MSSMat, 92 - Chatenay Malabry (France); Libert, M.; Marini, B. [CEA Saclay, Dept. des Materiaux pour le Nucleaire (DEN/SAC/DMN/SRMA), 91 - Gif sur Yvette (France)

    2006-07-01

    The objective of this study is to take into account the effect of plasticity mechanisms on the ductile/brittle transition in low alloy steels of PWR reactor vessels. A crystalline plasticity model, describing the effect of temperature on the behaviour, has been implemented in a large transformation frame. The material parameters of the model have been determined experimentally and from mechanical tests using an inverse method. Simulations of polycrystalline aggregates have been performed with imposed triaxiality. The study of local heterogeneities shows that the distribution of main stress can be modeled using a distribution of extreme values of first species (Gumbel) and that the parameters of this distribution can be simply described as a function of {sigma}{sub mises} (the average equivalent stress) and T (temperature). This approach will allow to introduce the effect of these heterogeneities in a local approach criterion of rupture. (J.S.)

  5. Corrosion of low Si-alloyed steels in aqueous solution at 90 deg. C. Inhibitive action of silicates; Corrosion d'aciers faiblement allies au silicium en solution aqueuse a 90 deg. C. Action inhibitrice des silicates

    Giordana, S

    2002-02-01

    Low-Si alloyed steels, with Si content ranging from 0.25 to 3.2 wt%, as potential candidate materials for high-level nuclear waste disposal containers, have been studied four the point of view of their corrosion behaviour at 90 deg C in an aqueous solution simulating groundwater (0.1 M NaCl borate-buffered solution with a pH of 8.5) both in reducing and in aerated conditions. The influence of silicate addition to the solution is examined so as to represent the silicon of groundwater, coming from the clay dissolution. When no silicate was added to the solution, silicon as an alloying element was proved to degrade in the first moments the steel ability to passivate. For longer immersion times, protective effects developed most efficiently on the steel containing 3.2 wt% silicon both in reducing an in aerating conditions, Infrared spectroscopy, EDSX, XRD and Raman microprobe were applied to characterise the oxide layer composition, which was found to be a mixture of magnetite and maghemite. In the presence of silicate in the solution, clay-like iron silicates appeared in the corrosion layer. Electrochemical tests results show that adding silicate into solution resulted in increasing the steel ability to passivate. In the short term, the inhibiting effect of silicate was confirmed by mass loss tests, but the tendency was inverse in the long term. Silicate iron layers were eventually less protective than the magnetite layers formed in the absence of silicate. (author)

  6. Intergranular brittle fracture of a low alloy steel induced by grain boundary segregation of impurities: influence of the microstructure; Rupture intergranulaire fragile d'un acier faiblement allie induite par la segregation d'impuretes aux joints de grains: influence de la microstructure

    Raoul, St

    1999-07-01

    The study contributes to improve the comprehension of intergranular embrittlement induced by the phosphorus segregation along prior austenitic grain boundaries of low alloy steels used in pressurized power reactor vessel. A part of this study was performed using a A533 steel which contains chemical fluctuations (ghost lines) with two intensities. Axi-symmetrically notched specimens were tested and intergranular brittle de-cohesions were observed in the ghost lines. The fracture initiation sites observed on fracture surfaces were identified as MnS inclusions. A bimodal statistic obtained in a probabilistic model of the fracture is explained by the double population of ghost lines' intensities. A metallurgical study was performed on the same class of steel by studying the influence of the microstructure on the susceptibility to temper embrittlement. Brittle fracture properties of such microstructures obtained by dilatometric experiments were tested on sub-sized specimens to measure the V-notched fracture toughness. Fraction areas of brittle fracture modes were determined on surface fractures. A transition of the fracture mode with the microstructure is observed. It is shown that tempered microstructures of martensite and lower bainite are more susceptible to intergranular embrittlement than tempered upper bainitic microstructure. The intergranular fracture is the most brittle mode. The analysis of crystalline mis-orientations shows a grain boundary structure appreciably more coherent for tempered microstructures of martensite and lower bainite. The higher density of randomgrain boundaries is susceptible to drag the phosphorus in the upper bainitic matrix and to make the quantity of free phosphorus decreasing. Microstructure observations show a difference in the size and the spatial distribution of carbides, essentially cementite, between tempered martensite and upper bainite. It can explain the bigger susceptibility of this last microstructure to cleavage mode. (author)

  7. Experimental and numerical studies of the effect of plasticity mechanisms on the brittle rupture by cleavage in low alloy steels; Etudes experimentale et numerique de l'effet des mecanismes de plasticite sur la rupture fragile par clivage dans les aciers faiblement allies

    Libert, M

    2007-09-15

    It is indispensable to guarantee the integrity of PWR reactor vessels during an accidental running: in this context, the understanding and the modelling of the mechanisms of brittle rupture of steels are decisive elements of the complicated estimation of the service life of reactor vessels. The models of local approach of rupture by cleavage are one of the main tools of anticipation of the tensile strength of low alloy steels. In this work, the effect of the stresses heterogeneities in a local criteria of initiation of cleavage has been taken into account. The results of the microstructure calculations are used for proposing a statistical description of the local stresses distribution evolution. This statistical approach allows to propose a local approach model of the rupture depending both of the mechanical heterogeneities and of the sizes distributions of the defects. The behaviour of the material and its evolution are characterized at the microscopic and macroscopic scales in the temperature range [25 C, -196 C]. Simple tensile tests, velocity and temperature rises tests and toughness tests have been carried out. A micro-mechanical behaviour model describing the plastic behaviour below the transition temperature T{sub a} has been proposed. The behaviour law is based on the deformation mechanisms described in bibliography and identified by an inverse method from mechanical tests. The TEM observations and the characterization of the behaviour thermally activated allow to determine several parameters of the model. Simulations are carried out in order to model the main stress distributions {sigma}{sub 1} in two bainite microstructures corresponding to the elementary volume of the local approach of the rupture. The temperature and the triaxiality effects on the evolutions of the heterogeneities is characterized. A distribution function describing the distribution of the local values of {sigma}{sub 1} in terms of the main and equivalent mean stresses {sigma}{sub 1} and {sigma}{sub m} in the microstructure is proposed. This function is used for formulating a model of rupture local approach integrating the distribution of the critical defects sizes and the distributions of {sigma}{sub 1}. It is shown that in some cases, the dispersion of the local stresses is sufficient to explain the dispersions of the rupture stresses at the scale of the elementary volume. The dispersions of the rupture stresses are in agreement with those given by the Beremin model. The taken into account of the mechanical heterogeneities allows to introduce a dependency of the rupture probability in terms of temperature, of deformation and of triaxiality. (O.M.)

  8. Astronomy Allies

    Flewelling, Heather; Alatalo, Katherine A.

    2016-01-01

    Imagine you are a grad student, at your first conference, and a prominent senior scientist shows interest in your work, and he makes things get way too personal? What would you do? Would you report it? Or would you decide, after a few other instances of harassment, that maybe you shouldn't pursue astronomy? Harassment is under-reported, the policies can be difficult to understand or hard to find, and it can be very intimidating as a young scientist to report it to the proper individuals. The Astronomy Allies Program is designed to help you with these sorts of problems. We are a group of volunteers that will help by doing the following: provide safe walks home during the conference, someone to talk to confidentially, as an intervener, as a resource to report harassment. The Allies are a diverse group of scientists committed to acting as mentors, advocates, and liaisons. The Winter 2015 AAS meeting was the first meeting that had Astronomy Allies, and Astronomy Allies provided a website for information, as well as a twitter, email, and phone number for anyone who needs our help or would like more information. We posted about the Astronomy Allies on the Women In Astronomy blog, and this program resonates with many people: either they want to help, or they have experienced harassment in the past and don't want to see it in the future. Harassment may not happen to most conference participants, but it's wrong, it's against the AAS anti-harassment policy ( http://aas.org/policies/anti-harassment-policy ), it can be very damaging, and if it happens to even one person, that is unacceptable. We intend to improve the culture at conferences to make it so that harassers feel they can't get away with their unprofessional behavior.

  9. Study of clustering point defects under irradiation in dilute iron alloys; Etude de la formation sous irradiation des amas de defauts ponctuels dans les alliages ferritiques faiblement allies

    Duong-Hardouin Duparc, T.H.A

    1998-12-31

    In low copper steels for nuclear reactor pressure vessel, point defect clustering plays an important role in hardening. These clusters are very small and invisible by transmission electron microscopy. In order to study the hardening component which results from the clustering of freely migrating point defects, we irradiated in a high voltage electron microscope Fe, the FeCu{sub 0.13%}, FeP{sub 0.015%} and FeN{sub 33ppm} alloys and the complex FeMn{sub 1.5%}Ni{sub 0.8%}Cu{sub 0.13%}P{sub 0.01%} alloy the composition of which is close to the matrix of pressure vessel steel. We studied the nucleation of dislocation loops and their growth velocity. The observations and the analyses have shown that in the complex model alloy, the interstitial dislocation loops are smaller and their density is more important than for the others alloys. The diffusion coefficients of interstitials and vacancies are obtained with the help of a simplified model. The densities of dislocation loops and their growth velocities obtained experimentally are reproduced by means of a cluster dynamics model we have developed. This is achieved self-consistently by using as a first trial the approximated coefficients obtained with the simplified model. The results of calculations have shown that the binding energy of di-interstitials must be very important in the binary iron alloys and only 0.95 eV in iron. Copper, nitrogen and phosphorus stabilize di-interstitials in iron. Finally the distribution of interstitial loops at 290 deg C and at 2.10{sup -9} dpa/s is calculated with the diffusion coefficient of point defects adjusted in FeCu. A distribution of small loops appears which gives an increase of hardening estimated to 10 Hv instead of 33 Hv experimentally observed. This low value can be improved by assuming in agreement with molecular dynamics simulations that a little fraction of di-interstitials is created at 2.5 MeV. (author) 111 refs.

  10. Educators' Guide to Ally Week

    Gay, Lesbian and Straight Education Network (GLSEN), 2010

    2010-01-01

    An ally is an individual who speaks out and stands up for a person or group that is targeted and/or discriminated against. An ally works to end oppression by supporting and advocating for people who are stigmatized, or treated unfairly because of who they are. In this context, Allies are referred to as people who do not identify as LGBT (lesbian,…

  11. Plasticité cristaline des aciers sphéroïdisés et clivage

    Rezaee, Saeid

    2011-01-01

    La prédiction du clivage des aciers ferritiques a été largement étudiée à l’aide de l’approchelocale de la rupture, et des modèles macroscopiques identifiés phénoménologiquement comme celui de Beremin. Cette prédiction reste cependant difficile dans le domaine de transition ductilefragile. Cela a conduit à des études micromécaniques par les approches polycristallines afin de décrire l’évolution de la contrainte de clivage en fonction de la température pour les aciers bainitiques. Dans cette é...

  12. Clinical research in allied health.

    Selker, L G

    1994-01-01

    Allied health professionals in nutrition and medical dietetics, occupational therapy, physical therapy, and speech-language pathology and audiology play both unique and key cross-cutting roles in the furtherance of clinical research. Clinical research in nutrition and medical dietetics uniquely focuses on food nutrient intake and the metabolic utilization of nutrients. Clinical research in occupational therapy has a special focus on the relationship of impairment to disability, the adaptation to disability and the maximization of function. Physical therapy clinical research uniquely targets movement dysfunction and its evaluation and treatment within the context of quality and effective care. Clinical research in speech-language pathology and audiology is singular in its focus on deafness and hearing disorders, voice, speech, language and related disorders, and intersections among these and other neurological and physical conditions. Thus, all of these disciplines are making unique contributions to clinical research. Clinical research in these allied health professions is much more than the above specific foci. Inasmuch as these disciplines are rooted in practice, their contributions to research are inherently clinical. Many, if not most, of these contributions represent further validations of clinical practice or its underlying knowledge base. This means that, at a macro level, clinical research in allied health is very much "applied" research. Within allied health clinical research, this emphasis is redoubled at the "person," or individual level, where considerable attention is given to concepts of function and effectiveness. Clinical research in allied health has played a key cross-cutting role through its emphasis on collaboration. Possibly due to their professional maturation within multidisciplinary academic units, allied health professionals have demonstrated a level of comfort with multidisciplinary and interdisciplinary collaborations unique within many

  13. Alli-Lu Ilannani-Lu (Alli and His Friends).

    Pope, Mary L.; And Others

    This third grade elementary language text, designed for children in bilingual Inupiat-English programs in Ambler, Kabuk, Kiana, Noorvik, and Shungnak, is a story about the adventures of an animal named Alli and his friends. Each page of text is illustrated with a black-and-white drawing. The English equivalent is given at the back and is not…

  14. WW1 Allies Flags Fans

    Biger, Pierre-Henri

    2014-01-01

    International audience Several hand fans are decorated with flags of the main Allied countries during WW1. They show the entry of the United States into the war, and the departure of Russia. So these feminine utensils (and advertising items, for instance here for Champagne Eugene Clicquot) play their role in theWar effort.

  15. SOUDAGE D'ACIER Z 2 CN 18-10 PAR LASER CO2

    Petesch, B.; SAKOUT, A; Laurent, M.; M. Robin

    1987-01-01

    Le soudage d'un acier Z 2 CN 18 par faisceau laser a été étudié. L'influence principaux paramètres vitesse, puissance, focalisation a été examinée. Les moyens classiques de caractérisation des soudures ont été utilisées : observations métallographiques forme de la zone fondue, quantité de porosités et énergie absorbée. Le maximum de pénétration correspond au maximum d'énergie absorbée.

  16. Modélisation Elasto-Viscoplastique du Comportement des Aciers

    PIPARD, Jean-Marc; ABED-MERAIM, Farid; BALAN, Tudor; Berveiller, Marcel; Bouaziz, Olivier; LEMOINE, Xavier

    2007-01-01

    Dans cet article, une modélisation des différentes phases (ferrite, perlite etc.…) d’un acier multiphasé est proposée moyennant une loi phénoménologique à base physique. La description unifiée du comportement viscoplastique peut être décrite à partir de lois de type sinus hyperbolique. Dans cette optique, une loi en sinus hyperbolique est utilisée afin de décrire de façon physiquement acceptable l’ensemble des comportements asymptotiques du comportement viscoplastique. L’écrouissage de chacun...

  17. How Allies Collaborate; The NATO Training Experience.

    Vandevanter, E., Jr.

    A survey was made of North Atlantic Treaty Organization (NATO) coordination of training programs for allied military forces and its implications about collaboration among allies in peacetime. Three types of training were analyzed: (1) higher training, or the coordination of large military formations; (2) unit training of smaller teams; (3)…

  18. Whiteness in Social Work Education Authentic White Allies

    Hornung, Rebecca

    2012-01-01

    This dissertation is guided by the following questions: How do People of Color define and experience White people as "authentic" allies? What does a White ally look like to People of Color? How do White allies view themselves as "authentic" White allies? What experiences lead White people to anti-racism and anti-racist praxis?…

  19. Encouraging the Development of Disability Allies

    Evans, Nancy J.; Assadi, Jennifer L.; Herriott, Todd K.

    2005-01-01

    The authors advocate for a constructionist interpretation of disability, grounded in a social justice perspective, by discussing disability paradigms, factors that influence attitudes and attitude change regarding disability, and disability ally development and behaviors.

  20. Aciers inoxydables et corrosion localisée : le rôle du molibdène

    Mesquita, Thiago

    2012-01-01

    Les aciers inoxydables sont de plus en plus utilisés comme renfort du béton dans lesconstructions marines et côtières, afin de prévenir la corrosion induite par les ions chloruresqui pénètrent dans le béton poreux. L’ajout de molybdène dans les aciers inox contribue àaugmenter leur résistance à la corrosion par piqure lorsqu’ils sont utilisés dans desenvironnements acides et neutres. Cependant, le rôle du Mo sur la corrosion par piqûre desaciers en milieu alcalin chloruré reste à ce jour flou...

  1. FATIGUE PAR CHOCS - DISPOSITIF EXPÉRIMENTAL - RÉSULTATS OBTENUS SUR UN ACIER AU NICKEL-CHROME-MOLYBDÈNE

    Bousseau, M.; Clisson, J.; Mas, Ch.

    1985-01-01

    Un dispositif expérimental basé sur le principe des barres d'Hopkinson a été développé afin d'étudier le comportement en fatigue par chocs d'éprouvettes de traction. Les possibilités et les limites sont présentées ainsi que les premiers résultats obtenus sur un acier 35 NCD 16.

  2. Fragilisation par le zinc liquide des aciers haute résistance pour l'automobile Liquid zinc embrittlement of high strength automotive steels

    Frappier Renaud; Paillard Pascal; Gall René Le; Dupuy Thomas; Fabregue Damien; Kleber Xavier

    2013-01-01

    Cette étude présente les investigations menées sur la fragilisation par le zinc liquide d'un acier électro-zingué. La caractérisation mécanique par essais de traction à haute température montre un important puits de ductilité entre environ 700 ∘C et environ 950 ∘C. L'observation au MEB des éprouvettes de traction indique que, dans la gamme de température observée pour laquelle il y a fragilisation, on a mouillage intergranulaire des joints de grains de l'acier à l'interface acier/revêtement p...

  3. Overview of allied health personnel shortages.

    Elwood, T W

    1991-01-01

    Upon learning that 95% of all fatal traffic accidents occur within three miles of one's home, an acquaintance moved to another residence four miles away and is still alive today. The world might be a much better place if most obstacles could be overcome this handily. Unfortunately, the problem of allied health personnel shortages appears to be more intractable. Because the situation is complicated in nature, it is most unlikely that any single remedy will suffice. Public and private interests have joined forces in many states, but it is abundantly clear that conventional market forces are unlikely to prevail. These forces usually focus on supply and demand. While shortages may cause entry-level salaries to rise, they do not stimulate academic institutions to increase their output nor will they affect the availability of research funding and/or doctoral training programs. Current market forces compel health facilities to engage in bidding wars for scarce manpower. Although individual job seekers may benefit, this practice does not increase the number of training program graduates. The federal government has a decisive role to play in assuring an adequate number of personnel to meet this nation's health care needs. Assistance is necessary in the form of providing entry- and advanced-level traineeships to accelerate the flow of part-time students pursuing doctorates, and to fund model student recruitment/retention projects. This role should encompass attracting students (particularly from minority and underserved portions of the population) to academic programs. The Disadvantaged Minority Health Improvement Act, PL 101-527 that was enacted in November 1990, contains only minimal provisions for allied health. Eligibility for student scholarship assistance is restricted to a small handful of allied health professions. Moreover, allied health is not eligible for the loan repayment program aimed at individuals who agree to serve on the faculty of health professions

  4. 22 CFR 120.32 - Major non-NATO ally.

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Major non-NATO ally. 120.32 Section 120.32... § 120.32 Major non-NATO ally. Major non-NATO ally means a country that is designated in accordance with § 517 of the Foreign Assistance Act of 1961 (22 U.S.C. 2321k) as a major non-NATO ally for purposes...

  5. Allied, MGC link on cyanate esters

    In the latest of a line of joint ventures in its plastics business, Allied Signal has reached agreement with Mitsubishi Gas Chemical (MGC) to jointly develop thermoset cyanate ester resins and blends. The deal will involve further development of Allied Signal's Primaset phenol-formaldehyde cyanate ester resins, a new entrant in the thermoset arena. Although the Primaset resins were discovered in the 1960s, this would be the first time they are available commercially. The deal will marry Primaset technology with MGC's Skylex bisphenol A cyanate ester resins, says Fred DiAntonis, director/advanced materials at Allied Signal. The two firms are looking at marketing blends of the two materials. The potential market for these resins, used commercially by the electronics industry in printed circuit boards and by the aerospace industry in composites, is significant, says Robert P. Viarengo, Allied Signal president/performance materials. By aligning ourselves with MGC, the world leader in cyanate ester resin, we anticipate moving forward aggressively. The main competitor is Ciba, which acquired bisphenol A cyanate ester resins with its purchase of Rhone-Poulenc's high temperature resins business. DiAntonis estimates the market for cyanate ester resins could be worth $150 million by the end of the decade, although development costs have been in the tens of millions of dollars range

  6. Chemicals and Allied Products Waste Treatment

    Yung-Tse Hung

    2011-06-01

    Full Text Available A review of the literature published from 2008 to 2010 on topics related to chemicals and allied products is presented. The review considered several sections such as waste management, physicochemical treatment, aerobic treatment, anaerobic treatment, air emissions, soils and groundwater, and reuse.

  7. Strategies for Engaging Men as Anti-Violence Allies: Implications for Ally Movements

    Erin Casey

    2010-11-01

    Full Text Available As ally movements become an increasingly prevalent element of social justice efforts, research is needed that illuminates effective strategies to initially engage members of privileged social groups in anti-oppression work. This study presents descriptive findings regarding ally engagement strategies and barriers from a qualitative study of a particular ally movement – male anti-violence against women activism. Twenty-seven men who recently initiated involvement in an organization or event dedicated to ending sexual or domestic violence were interviewed regarding their perceptions of effective approaches to reaching and engaging other men in anti-violence work. Participants viewed tailored engagement strategies that tap into existing social networks, that allow men to see themselves reflected in anti-violence movements, and that help men make personal, emotional connections to the issue of violence as most effective. Implications for engaging men in the project of ending violence against women, and for ally movements more generally are discussed.

  8. Stress corrosion of unalloyed steels in geological storage conditions; Corrosion sous contrainte des aciers non allies dans les conditions du stockage geologique

    Didot, A.; Herms, E.; Bataillon, C.; Chene, J. [CEA Saclay, Dept. de Physico-Chimie (DEN/DANS/DPC/SCCME/LECA), 91 - Gif sur Yvette (France); Crusset, D. [Agence Nationale pour la Gestion des Dechets Radioactifs (ANDRA), 92 - Chatenay Malabry (France)

    2007-07-01

    The concept retained for high level and years living radioactive waste disposal is the underground storage. It is then necessary to know the behaviour in time (about 10000 years) of the different constituent elements of the containment. The storage site chosen is the Bures' ones, presenting a clay formation at 600 m of depth. Each compartment is separated of a sufficient distance in order to profit of the thermal dispersion effect in the rock for optimizing the cooling of the package. In this work, has been used an unalloyed steel sur-container. The aim is to understand the resistance of the material under corrosion and loading, and particularly the stress corrosion which is a particular case of cracking assisted by environment. The material studied is a weld of two unalloyed steels obtained by electron beam. Slow traction tests have been carried out in an autoclave in the following experimental conditions: interstitial water in equilibrium with a helium-CO{sub 2} mixture 5.4 per thousand under 50 bar and at a temperature of 90 C. The results show an influence of the hydrogen corrosion on the mechanical behaviour of the material and particularly a decrease of the size of the reduction in area, which is practically unexisting in the case of the melted zone. These results are explained into details. (O.M.)

  9. Valorisation des laitiers issus de l'élaboration d'aciers inoxydables dans le béton

    Adegoloye, Obafèmi Gildas Franck

    2014-01-01

    Le laitier EAF inox et le laitier AOD sont les deux principaux laitiers issus de l'élaboration des aciers inoxydables. Aujourd'hui ces laitiers ne sont valorisés qu'en construction routière. Cette utilisation ne permet pas d'assurer une valorisation complète et pérenne de ces laitiers dont une large part reste stockée. Compte tenu des propriétés physiques des laitiers EAF inox et AOD solidifié par stabilisation, leur utilisation comme granulats dans le béton peut être intéressante. L'objectif...

  10. Allis Prize Lecture: Gaseous Electronics Physics Inside

    Garscadden, Alan

    2002-10-01

    I was fortunate to enjoy the advice of K. G. Emeleus during my graduate studies and for many years afterwards. He introduced me to the papers of Will Allis and later I was privileged to correspond with Professor Allis. At this time I had moved from the Queens university environment to work at a large Air Force base. There I have worked with a lot of smart people, including several who also come to the GEC each year to be refreshed and calibrated. A personal overview is presented on a few of the many roles that atomic, molecular and optical physics, including gaseous electronics, play in programs of the Air Force Research Laboratory and subsequently on AF systems and operations. While there have been misses, overall there have been many successes with impacts that provide more effective systems, as recent experiences have demonstrated. Some example studies, involving primarily electron collision physics, successful and unsuccessful in being chosen for application, are discussed.

  11. India's Export of Livestock and Allied Products

    J K Sachdeva

    2005-01-01

    One of the main objectives of the governments’ export policy is to maximise agricultural exports in order to earn foreign exchange. It also seeks to provide remunerative prices to the farmers while ensuring adequate availability of essential commodities to the domestic consumers at reasonable prices. This paper analyses the India’s exports of livestock and allied products to principal groups of countries in the light of world trade. The direction of trade has been analysed to explore the area...

  12. Influence de la composition chimique et de la microstructure sur le dégazage de l'hydrogène des aciers inoxydables austénitiques destinés à l'ultravide

    Reinert, Marie-Pierre

    Dans les installations métalliques sous ultravide, l'hydrogène est le principal constituant de l'atmosphère résiduelle. Le flux de dégazage d'une tôle en acier inoxydable austénitique, matériau fréquemment utilisé en technologie du vide, après un étuvage sous vide, est typiquement de quelques 10-12 Torr.1/cm2.s, et est constitué principalement d'hydrogène. Dans le cadre de cette étude, un appareillage de thermodésorption sous ultravide a été conçu et mis au point pour étudier les phénomènes d'adsorption, de diffusion et de piégeage de l'hydrogène résiduel dans les aciers inoxydables austénitiques. Différents aciers ont été étudiés: l'acier 316L (avec trois modes d'élaboration différents), l'acier 316LN et d'autres aciers stabilisés au titane ou au niobium. La microstructure et la couche d'oxyde de ces aciers ont été caractérisées à l'état de réception et pendant les cycles de thermodésorption. Pendant un cycle de thermodésorption, les principales espèces désorbées...

  13. Fissuration en relaxation des aciers inoxydables austénitiques au voisinage des soudures

    Auzoux, Q.; Allais, L.; Gourgues, A. F.; Pineau, A.

    2003-03-01

    Des fissures intergranulaires peuvent se développer au voisinage des soudures des aciers inoxydables austénitiques lorsqu'ils sont réchauffés dans le domaine de température compris entre 500^{circ}C et 700^{circ}C. A ces températures, les contraintes résiduelles post-soudage se relaxent par déformation viscoplastique. Il peut arriver que ces zones proches de la soudure soient tellement fragiles, qu'elles ne puissent accommoder cette faible déformation. Afin de préciser quelles peuvent être les modifications microstructurales qui conduisent à une telle fragilisation, on a examiné les microstructures de ces zones et révélé ainsi un écrouissage résiduel, responsable d'une forte élévation de la dureté. On a pu reproduire par hypertrempe puis laminage entre 400^{circ}C et 600^{circ}C une microstructure similaire. Des essais mécaniques (traction, fluage, relaxation, sur éprouvettes lisses et pré-fissurées) ont été réalisés à 550^{circ}C et à 600^{circ}C sur ces zones affectées simulées et sur un état de référence hypertrempé. Ils ont montré que l'écrouissage diminuait la ductilité dans le domaine de rupture intergranulaire, sans modifier qualitativement le mécanisme d'endommagement. Pendant la pré-déformation les incompatibilités de déformation entre grains conduiraient à l'existence de contraintes locales élevées qui favoriseraient la germination des cavités intergranulaires.

  14. Allied Health, Part I, Program Review. Consultants' Report.

    Snyder, John; And Others

    This report presents results of an external review of programs at Florida State University institutions providing training in those allied health occupations which provide direct patient care. An executive summary finds that, overall, the allied health academic enterprise in the State University System is functioning well with strong student…

  15. Theatre of Presence - Antero Alli's Paratheatrical ReSearch Lab

    Isar, Nicoletta

    the oppression, decadence and corruption that has crucified and buried the poetic Imagination" (Antero Alli) This paper will try to unveil one of Antero Alli's paratheatrical experiments in overcoming the death of ritual in theatre. Orphans of Delirium is an intense, living ritual experience, "fluid...

  16. Queer & Ally Youth Involvement in the Fair Wisconsin Campaign

    Stiegler, Sam

    2008-01-01

    This article discusses the role and experience of queer youth and allies in the Fair Wisconsin campaign that fought against the marriage amendment to that state's constitution. It illustrates how LGBT and ally youth involvement can be incorporated into other organizations. Following an explanation of the campaign, are narratives of two…

  17. Collaborative Research in Allied Health. Proceedings of Collaborative Research in Allied Health Symposium, 1986 (Columbus, Ohio, September 18, 1986).

    Schiller, M. Rosita, Ed.; And Others

    The following papers are included: "Collaborative Research: Lessons from the Tower of Babel" (Baldwin); "Establishing a Data Base for Intrainstitutional Research in the Allied Health Professions" (Von Son, Beiley); "Determining Research Needs in a School of Allied Health Professions" (Bottjen et al.); "Surveying Research Interests and Needs of…

  18. Caractérisation mécanique multi-échelle des produits de corrosion d’aciers doux

    Dehoux, A; Berthaud, Y; BOUCHELAGHEM, F.

    2011-01-01

    Cette étude vise à déterminer le comportement mécanique des produits qui se créent lors de la corrosion des armatures du béton armé. Dans ce cadre une caractérisation complète de la microstructure d'échantillons de corrosion d'acier doux ainsi que des calculs d'homogénéisation ont été réalisés. En parallèle, des essais de traction-compression ont été faits au MEB in situ et ont permis de mettre en relation calculs d'homogénéisation et comportement réel des échantillons....

  19. The metabolic properties of plutonium and allied materials

    Hamilton, J.G.

    1949-11-16

    This report summarizes radioautographic, tracer, decontamination, and bone metabolism studies done in 1949 on rats using plutonium and allied materials: Iodine 131; zirconium 95; niobium 95; cerium 144; samarium 153; selenium 75; rhodium 105. 4 figs., 9 tabs.

  20. Operation Allied Force: setting a new precedent for humanitarian intervention

    Walsh, Thomas F

    2000-01-01

    On 24 March 1999, NATO initiated military action against the Federal Republic of Yugoslavia in response to the crisis in Kosovo. Operation Allied Force was conducted without the explicit authorization of the United Nations Security Council, but was justified by NATO allies as a means to bring peace and stability to Kosovo, and to prevent a greater humanitarian emergency from developing. In the absence of specific U.N.S.C. authorization, was NATO's violation of Yugoslavia's sovereignty through...

  1. Allied Health Field, Tenth Grade. Introduction to Allied Health and the Health Care Team. Operation TACT [Toward an Allied Health Career Today] Curriculum [and Teachers' Handbook].

    Smith, Tracy

    The two-part set consists of a student handbook and a related teachers' handbook in allied health education for use at the tenth grade level. The student handbook consists of seven units which focus on the biology curriculum: (1) community water examination, (2) bacteriological examination of water, (3) the microscope, (4) microbes and man, (5)…

  2. Influence des conditions de soudage sur le comportement en fatigue d'un acier THR Dual Phase soudé par point

    Rossillon, Frédérique

    2007-01-01

    Les principaux modèles de comportement en fatigue des assemblages soudés par point ne prennent en compte que des paramètres géométriques. Or, les contraintes résiduelles, la microstructure de la Zone Affectée Thermiquement et la forme du fond d'entaille sont, a priori, autant de facteurs d'influence supplémentaires. L'objectif de ce travail est la compréhension des facteurs prédominants de la tenue en fatigue des assemblages soudés par point en acier THR, afin de proposer des conditions de so...

  3. AlliedSignal solid oxide fuel cell technology

    Minh, N.; Barr, K.; Kelly, P.; Montgomery, K. [AlliedSignal Aerospace Equipment Systems, Torrance, CA (United States)

    1996-12-31

    AlliedSignal has been developing high-performance, lightweight solid oxide fuel cell (SOFC) technology for a broad spectrum of electric power generation applications. This technology is well suited for use in a variety of power systems, ranging from commercial cogeneration to military mobile power sources. The AlliedSignal SOFC is based on stacking high-performance thin-electrolyte cells with lightweight metallic interconnect assemblies to form a compact structure. The fuel cell can be operated at reduced temperatures (600{degrees} to 800{degrees}C). SOFC stacks based on this design has the potential of producing 1 kW/kg and 1 ML. This paper summarizes the technical status of the design, manufacture, and operation of AlliedSignal SOFCs.

  4. Allied health applications of a computerized clinical log database system.

    Boyce, K E; Winn, J S; Anderson, S L; Bryant, B G

    1999-01-01

    Preliminary research in the development and use of computerized clinical log records began in 1987 in an allied health college at a midwestern academic health center. This article reviews development and implementation of a computerized system for managing clinical log records to improve and enhance allied health educational programs in the radiation sciences. These clinical log databases are used for quantitative and qualitative analyses of student participation in clinical procedures, and educational planning for each student. Collecting and recording data from clinical log records serves as a valuable instructional tool for students, with both clinical and didactic applications. PMID:10389054

  5. Modeling-Based Processing of Al-Li Alloys for Delamination Resistance Project

    National Aeronautics and Space Administration — Al-Li alloys are of interest for use in aerospace structures due to the desirable combination of high strength and low density. However, high strength Al-Li alloys...

  6. Etude de la corrosion des aciers de précontrainte dans des milieux cimentaires et en solutions synthètiques

    BLACTOT, E; BRUNET VOGEL, C; FARCAS, F; Gaillet, L.; MABILLE, I; Chaussadent, T.; Sutter, E

    2007-01-01

    La durabilité des ouvrages en béton précontraint est directement liée à la longévité des câbles en acier sous contrainte. De nombreux problèmes pouvant altérer la pérennité des ouvrages ont été identifiés tel que la rupture de câbles due à la corrosion sous contrainte. Dans cet article, il a été considéré le cas d'un défaut d'injection de coulis de ciment destinée à protéger les câbles. Dans ce cas, la présence de zones dégradées (zone ségrégée et ressuée) au contact de l'acier peut entraîner...

  7. Index of Graduate Theses and Projects in Allied Health.

    Journal of Allied Health, 1991

    1991-01-01

    Contains 1,073 entries from 91 institutions, giving author, institution, year, degree, emphasis, discipline, and title, arranged by topic: allied health, biocommunication arts, child development/care, clinical psychology, dentistry, environmental health, exercise science, food service, health education, health services, medical laboratories, nurse…

  8. Predictors of Grades in General Chemistry for Allied Health Students.

    Craney, C. L.; Armstrong, R. W.

    1985-01-01

    Analyzes the relationship between allied health students' (N=304) performance in general chemistry and the American Chemical Society's Toledo Exam (Form 1974), mathematical Scholastic Aptitude Test (SAT) scores, and high school chemistry grade. Also discusses use of findings to identify students who had a high risk of receiving low grades. (JN)

  9. The availability of allied health care in Dutch nursing homes.

    Boer, M.E. de; Leemrijse, C.J.; Ende, C.H.M. van den; Ribbe, M.W.; Dekker, J.

    2007-01-01

    Purpose. To determine the availability of allied health care in nursing homes in the Netherlands, and its dependency on characteristics of the nursing home. Methods. Structured surveys by telephone were carried out in a sample of 100 from a country total of 286 somatic (for somatic patients only) an

  10. Friends, Families, and the Importance of Straight Allies.

    Woog, Dan

    2000-01-01

    Argues that gay issues should be recognized and discussed in schools, and cites the killing of Matthew Shepard as an example of hatred perpetuated through ignorance. Outlines the need for straight allies to stand up for gay students whenever they can, and suggests ways straight teachers can show their gay colleagues that they are sensitive to the…

  11. The National Tay Sachs and Allied Diseases Association.

    Zeitlin, Paula

    1986-01-01

    The National Tay-Sachs and Allied Diseases Association is involved in education, research, and prevention of Tay-Sachs, an inherited metabolic disorder which destroys the central nervous system, and over 30 related disorders. The group features a parent peer group network and a support group for carrier couples. (CL)

  12. National Tay-Sachs and Allied Diseases Association, Inc.

    Exceptional Parent, 1977

    1977-01-01

    Reviewed are the history and organization, purpose and programs, and public services of the National Tay-Sachs and Allied Diseases Association, an organization geared toward eradicating Tay-Sachs disease (a hereditary disorder affecting primarily Jewish infants which generally leads to deterioration and death by the child's fifth year). (SBH)

  13. Allied Health Care Employees' Workplace Skills and Competencies: Are They Prepared?

    McClain, Clifford R.; McClain, Mildred A.

    2007-01-01

    The purpose of this study was to determine the extent to which allied health care providers considered the Secretary's Commission on Achieving Necessary Skills (SCANS, 1991) and competencies as those that are necessary for entry level employment in the allied health care industry. The extent that allied health care supervisors and managers…

  14. 42 CFR 413.85 - Cost of approved nursing and allied health education activities.

    2010-10-01

    ... courses relating to the theory and practice of the nursing or allied health profession involved that are... 42 Public Health 2 2010-10-01 2010-10-01 false Cost of approved nursing and allied health... NURSING FACILITIES Specific Categories of Costs § 413.85 Cost of approved nursing and allied...

  15. Introducing Astronomy Allies: We are here to help!

    Flewelling, Heather; Alatalo, Katherine A.

    2015-01-01

    Imagine you are a grad student, at your first conference, and a prominent senior scientist shows interest in your work, and he makes things get way too personal? What would you do? Would you report it? Or would you decide, after a few other instances of harassment, that maybe you shouldn't pursue astronomy? Harassment is under-reported, the policies can be difficult to understand or hard to find, and it can be very intimidating as a young scientist to report it to the proper individuals. The Astronomy Allies Program is designed to help you with these sorts of problems. We are a group of volunteers that will help by doing the following: provide safe walks home during the conference, someone to talk to confidentially, as an intervener, as a resource to report harassment. The Allies are a diverse group of scientists committed to acting as mentors, advocates, and liaisons. The Winter 2015 AAS meeting will be the first meeting that has Astronomy Allies, and Astronomy Allies will provide a website for information, as well as a twitter, email, and phone number for anyone who needs our help or would like more information. We posted about the Astronomy Allies on the Women In Astronomy blog, and this program resonates with many people: either they want to help, or they have experienced harassment in the past and don't want to see it in the future. Harassment may not happen to most conference participants, but it's wrong, it's against the AAS anti-harassment policy ( http://aas.org/policies/anti-harassment-policy ), it can be very damaging, and if it happens to even one person, that is unacceptable. We intend to improve the culture at conferences to make it so that harassers feel they can't get away with their unprofessional behavior.

  16. Comportement électrochimique d'un acier inoxydable sous rayonnement et en milieu représentatif des réacteurs à eau pressurisée (REPs).

    Wang, Mi

    2013-01-01

    Cette thèse est dédiée à l'étude du comportement des aciers inoxydables sous irradiation exposés en condition primaire des réacteurs à eau pressurisée (REP). Le potentiel électrochimique de l'acier inoxydable austénitique 316L et les paramètres environnementaux comme la teneur en hydrogène, ont été mesurés de façon continue à haute température (HT) et haute pression (HT) grâce à un dispositif expérimental unique, la cellule HTHP. Deux sources d'irradiation ont été utilisées: les protons et le...

  17. Simulation multi-échelle du skin-pass des aciers IF : Prédiction de la texture de déformation et du comportement mécanique

    SOHO, Komi; LEMOINE, Xavier; Abed-Meraim, Farid; ZAHROUNI, Hamid

    2015-01-01

    L’objectif principal de cette étude est de prédire la texture la texture de déformation et le comportement mécanique des aciers IF au cours du procédé de laminage des produits plats à faible taux de réduction. Un modèle basé sur l’homogénéisation autocohérente du comportement élastoplastique du monocristal est adopté pour modéliser le comportement de l’acier. Afin de réduire les temps de calcul dans la simulation multi-échelle, une procédure simplifiée est adoptée pour coupler le code de simu...

  18. Étude de l’influence des paramètres de soudage sur la microstructure et le comportement mécanique des assemblages acier-aluminium obtenus par soudage à l’arc MIG-CMT.

    Mezrag, Bachir

    2015-01-01

    Les assemblages acier-aluminium de tôles minces (0,8 à 2 mm) ont été beaucoup étudiés au début des années 2000 pour desapplications automobiles, dans la perspective d’alléger les véhicules (projet européen Super Light Car). Dans ce contexte, le présenttravail est réalisé en vue d’étudier les possibilités d’assemblage hétérogène acier-aluminium par la nouvelle variante du procédé desoudage MIG connue sous l’appellation CMT (Cold Metal Transfer). La première partie de l’étude est consacrée à la...

  19. Évolution des contraintes résiduelles dans la couche de diffusion d’un acier modèle Fe-Cr-C nitruré

    Jegou, Sébastien; Barrallier, Laurent; Somers, Marcel A. J.

    2011-01-01

    Limiter la fatigue et la corrosion des pièces est possible grâce à une nitruration. Des contraintes résiduelles en découlent. Le rôle de la diffusion du carbone sur le développement de ces contraintes a été étudié sur un acier modèle Fe-3%m.Cr-0.35%m.C.......Limiter la fatigue et la corrosion des pièces est possible grâce à une nitruration. Des contraintes résiduelles en découlent. Le rôle de la diffusion du carbone sur le développement de ces contraintes a été étudié sur un acier modèle Fe-3%m.Cr-0.35%m.C....

  20. To help allies, send security guarantees, not nuclear bombs

    Fuhrmann, Matthew; Sechser , Todd S.

    2014-01-01

    Despite the end of the Cold War more than two decades ago, the U.S. still deploys nuclear weapons in several countries. But does deploying these weapons act as a deterrent to conflict, making these countries safer? In new research which analyses the effects of such nuclear deployments, Matthew Fuhrmann and Todd S. Sechser find that their presence does little, when compared with alliance guarantees. They write that having an alliance with a nuclear armed ally is actually more effective in prev...

  1. Motivators, enablers, and barriers to building allied health research capacity

    Golenko X; Holden L; Pager S

    2012-01-01

    Susan Pager1, Libby Holden2, Xanthe Golenko21Queensland Health Metro South, 2School of Medicine, Griffith University, Brisbane, Queensland, AustraliaPurpose: A sound, scientific base of high quality research is needed to inform service planning and decision making and enable improved policy and practice. However, some areas of health practice, particularly many of the allied health areas, are generally considered to have a low evidence base. In order to successfully build research capacity in...

  2. Ferns and fern allies of District Shopian, Kashmir Valley, India

    SHAKOOR A. MIR

    2015-04-01

    Full Text Available Abstract. Mir SA, Mishra AK, Pala SA, Reshi ZA, Sharma MP. Ferns and fern allies of District Shopian, Kashmir Valley, India Biodiversitas 16: 27-43. Shopian, recently created hilly district of Kashmir valley, Jammu and Kashmir is surrounded by the lofty mountains of Pir-Panjal range. More than half area of district is occupied by different forests, subalpine, alpine and mountainous zones. Great altitudinal variation, adequate rainfall, high forest cover, large number of streams, springs and topographic variations render the district worthy for supporting rich fern flora. Therefore, the current study was aimed to undertake in-depth systematic survey of different habitats of Shopian for the collection of diversity of pteridophytes. Specimens were collected during 2010, 2011 and 2012 growing seasons from June to November. A total 81 species of ferns and fern allies belonging 27 genera and 11 families were reported. The dominant families of the region are Dryopteridaceae (25 species followed by Woodsiaceae (16 species, Aspleniaceae (13 species and Pteridaceae (12 species. Similarly, the dominant genera collected from here are Dryopteris (14 species, Asplenium (13, Polystichum (11 species and Athyrium (6 species. A list of the fern and fern allies, along with update nomenclature, their selected Synonym, diagnostic features, distributional and ecological notes have been provided here.

  3. Self-Medication Practice Among Allied and Non-Allied Health Students of the University of Santo Tomas

    JAY P. JAZUL; XANDRO ALEXI A. NIETO

    2014-01-01

    – Self-medication is presumed to be widely practiced around the world. This can be defined as the use of drugs to treat self-diagnosed disorders or symptoms, or the intermittent or continued use of a prescribed drug for chronic or recurrent disease or symptoms. High level of education and professional status has also been mentioned as predictive factors for self-medication. Students from the allied and nonallied health institutions of the University of Santo Tomas were assessed fo...

  4. Elaboration de revêtements sur acier inoxydable: simulation de la fusion par irradiation laser, caractérisation structurale, mécanique et tribologique.

    Avril, Ludovic

    2003-01-01

    L'irradiation par un laser Nd-YAG pulsé est mise en oeuvre afin d'élaborer des revêtements épais sur acier inoxydable X30Cr13, par fusion superficielle avec apport de bore ou nitrure de bore hexagonal (h-BN): alliages borurés polyphasés ou composites métal-céramique. Les coupes métallographiques permettent de déterminer l'épaisseur de chaque revêtement (zone fondue) et révèlent des microstructures de solidification caractéristiques: front plan, cellulaire et dendritique. Les caractéristiques ...

  5. Analyse statistique de l'assemblage acier/aluminium réalisé par le procédé de soudage MIG-CMT

    Mezrag, Bachir; Benachour, Mustapha; Deschaux Beaume, Frédéric

    2014-01-01

    La dépendance vis-à-vis des paramètres de soudage de la géométrie de l'assemblage hétérogène acier/aluminium réalisé par le procédé MIG-CMT dans une configuration à clin est étudiée à travers un plan d'expérience. Les paramètres choisis comme facteurs d'influence sont la puissance de soudage, la distance entre la torche et la pièce ou "stick-out", le débit de gaz et la vitesse de soudage, tandis que les caractéristiques géométriques sélectionnées comme fonctions objectifs sont le poids de mét...

  6. Soudage hybride Laser-MAG d'un acier Hardox® Hybrid Laser Arc Welding of a Hardox® steel

    Chaussé Fabrice; Bertrand Emmanuel; Paillard Pascal; Dubourg Laurent; Lemaitre David; Carin Muriel

    2013-01-01

    Le soudage hybride laser-MAG est un procédé fortement compétitif par rapport aux procédés conventionnels notamment pour le soudage de fortes épaisseurs et les grandes longueurs de soudure. Il connait de ce fait un développement important dans l'industrie. La présente étude s'est portée sur la soudabilité de l'acier Hardox® par ce procédé. Un large panel de techniques de caractérisation a été employé (mesures thermiques, radiographie X, duretés Vickers, macrographie…). L'objectif étant de déte...

  7. Experimental investigation of the residual stresses of 304L tubular welded joints; Caracterisation des contraintes residuelles sur assemblages soudes tubulaires en acier 304L

    Monin, L.; Panier, S.; Hariri, S.; Zakrzewski, D. [Ecole des Mines de Douai, 941, rue Charles Bourseul, BP 10838, 59508 DOUAI Cedex (France); Faidi, C. [EDF-SEPTEN, 12-14, avenue Dutrievoz, 69628 VILLEURBANNE (France)

    2007-07-01

    In the nuclear energy industry, the use of components made of austenitic stainless steel is widely spread, because of its specific thermal properties. The assembly of these pressure vessels and piping by welding processes often requires surface mechanical operations. These operations aim at hardening surfaces and lowering roughness. Nevertheless the main effect of these operations is the occurrence of residual stresses which can have positive or negative effects on the fatigue life. In this study, we focus on the evaluation and relaxation of residual stresses level on AISI 304L austenitic stainless steel tubular welded structures. Some of these rings are base metal rings (which stand as reference), the rest presents a longitudinal and symmetrical Y-weld joint, with or without grinding. Surface residual stresses, and their relaxation, were determined by using the X-ray diffraction method. (authors) [French] L'utilisation de composants en acier inoxydable austenitique, aux proprietes thermiques bien specifiques, est tres courante dans le domaine de la production d'energie nucleaire. Les procedes d'assemblage par soudage de ces equipements sous pression requierent des traitements de parachevement mecanique afin d'ameliorer l'etat de surface et modifier l'etat mecanique en introduisant des contraintes residuelles, qui peuvent avoir une influence sur la duree de vie de la structure. Cette etude porte sur la caracterisation et la relaxation des contraintes residuelles, determinees sur des eprouvettes annulaires specifiques en acier inoxydable austenitique de type 304L, a l'etat brut ou avec des soudures, arasees ou non. La methode de determination utilisee est la diffraction des rayons X. La relaxation de ces contraintes au cours d'essais de fatigue est egalement etudiee. (auteurs)

  8. Brandon/Hill selected list of books and journals in allied health.

    Hill, D R; Stickell, H N

    1998-01-01

    This list of 410 books and 78 journals is intended as a selection guide to be used in a library supporting allied health educational programs or allied health personnel in either an academic or health care setting. Because of the impossibility of covering the large number and wide variety of allied health professions and occupations, the recommended publications are focused primarily on the educational programs listed and described in the AMA's Health Professions Education Directory, 1997-199...

  9. Brandon/Hill selected list of print books and journals in allied health*†

    Hill, Dorothy R.; Stickell, Henry N.

    2003-01-01

    This list of 434 books and 79 journals is intended as a selection guide for print literature to be used in a library supporting allied health educational programs or allied health personnel in either an academic or health care setting. Because of the impossibility of covering the large number of and wide variety of allied health professions and occupations, the recommended publications are focused primarily on the educational programs listed and recognized by the American Medical Association ...

  10. 75 FR 60865 - Surety Companies Acceptable on Federal Bonds: Allied World Reinsurance Company

    2010-10-01

    ... Supplement No. 3 to the Treasury Department Circular 570, 2010 Revision, published July 1, 2010, at 75 FR... Fiscal Service Surety Companies Acceptable on Federal Bonds: Allied World Reinsurance Company AGENCY.... 9305 to the following company: Allied World Reinsurance Company (NAIC 22730). Business Address:...

  11. The effectiveness of allied health care in patients with ataxia: a systematic review

    Fonteyn, E.M.R.; Keus, S.H.J.; Verstappen, C.C.P.; Schols, L.; Groot, I.J.M. de; Warrenburg, B.P.C. van de

    2014-01-01

    Many patients with cerebellar ataxia have serious disabilities in daily life, while pharmacological treatment options are absent. Therefore, allied health care is considered to be important in the management of these patients. The goal of this review is to evaluate scientific evidence for allied hea

  12. Collegiate Programs in Allied Health Occupations; Program Cost and Financial Aid.

    Anderson, Philip W.; And Others

    Presented is a statistical summary of program cost data of students enrolled in collegiate allied health programs. Opportunities for students financing their education through scholarships, stipends, loans, or work-study programs are also presented. The data represent 5,035 allied health programs offered at 889 senior colleges and 539 junior or…

  13. Positive aspects of being a heterosexual ally to lesbian, gay, bisexual and transgender (LGBT) people.

    Rostosky, Sharon S; Black, Whitney W; Riggle, Ellen D B; Rosenkrantz, Dani

    2015-07-01

    Research on heterosexual allies has focused on heterosexual identity development models and pathways to ally activism. The positive aspects or positive experiences of identifying as an ally to lesbian, gay, bisexual, and transgender (LGBT) identified individuals and communities have received little attention. Using an online survey of participants recruited from LGBT ally related social media, we collected open-ended responses to a question about the positive aspects of self-identifying as a heterosexual ally. A final analytic sample of 292 self-identified male and female heterosexual adults (age 18-71, M = 33.47, SD = 13.32) provided responses that generated 8 themes. Positive aspects of being a heterosexual ally were: (a) increased knowledge and awareness, (b) upholding values of justice, (c) beneficial individual relationships, (d) community belonging, (e) educating others, (f) being a role model, (g) using social privilege, and (h) speaking out and taking a stand. The findings suggest that being a heterosexual ally is rewarding and may enhance individual well-being. These findings provide information that may contribute to effective ally development efforts. PMID:25798894

  14. 22 CFR 123.27 - Special licensing regime for export to U.S. allies of commercial communications satellite...

    2010-04-01

    .... allies of commercial communications satellite components, systems, parts, accessories, attachments and... export to U.S. allies of commercial communications satellite components, systems, parts, accessories... associated technical data for commercial communications satellites, and who are so registered with...

  15. Phylogeny and biogeography of hogfishes and allies (Bodianus, Labridae).

    Santini, Francesco; Sorenson, Laurie; Alfaro, Michael E

    2016-06-01

    Bodianus wrasses comprise one of the most diverse genera of labrids. Also known as hogfishes due to the presence of a large pig-like snout, Bodianus species are found in warm waters across the Pacific, Atlantic and Indian Oceans. To this date no densely sampled molecular phylogeny is available for this group, and a single morphological study did not include two genera (Clepticus and Semicossyphus) that have been shown to belong within hogfishes by molecular studies. Our study produced the first multi-locus molecular phylogeny of Bodianus species, and corroborated the non-monophyly of this group without the inclusion of the Creole wrasse (Clepticus) and the sheepheads (Semicossyphus). We further showed that hogfishes and allies started to radiate during the Early Miocene, ∼20Ma, and that while this group originated in the Indo-western and South-western Pacific, it experienced multiple episodes during which it successfully invaded different geographic regions and/or ocean basins. PMID:26944013

  16. Characteristics of patients with measles admitted to allied hospital rawalpindi

    Measles, a virus borne droplet infection, is one of the leading causes of death among young children worldwide despite presence of a safe and cost-effective vaccine. Objective of our study was to identify the characteristics of measles patients admitted to Allied Hospitals, Rawalpindi. Methods: This cross-sectional study was conducted amongst patients admitted with measles in paediatric units of Rawalpindi Medical College Allied Hospitals, Rawalpindi. A standard proforma was used to collect data from the respondents. Results: A total of 55 patients (mean age-29.36 months) with measles were included in the study. 65.5% children were vaccinated while 34.5% were not vaccinated. Among those vaccinated 14 were male. Out of the vaccinated children 52.6% were residents of middle class areas, 31.6% lower middle class area, 10.5% upper middle class areas and 5.3% rural areas. In 55.0% of patients who were vaccinated with at least one dose of measles at nine month of age the estimated calendar months of vaccination was March to April while in 30% the overall climatic period of vaccination was of summer (May to September). Twenty one study subjects were exposed to a case of measles in the family and thirty five out of all developed at least one known complication of the disease. Pneumonia was the most common complication reported in patients (63.6%) followed by diarrhoea (27.3%). Conclusion: Majority of the patients suffering from measles were not vaccinated and the most common reason for failure to immunize children was lack of awareness. Educated and well off fathers were more likely to get their children immunized. The vaccinated children who developed measles majority were vaccinated during months of March, April and May. (author)

  17. Influence de la microstructure intragranulaire sur l'évolution des surfaces de charge d'un acier ferritique lors de trajets de déformation monotones et complexes

    FRANZ, Gérald; ABED-MERAIM, Farid; BEN ZINEB, Tarak; LEMOINE, Xavier; Berveiller, Marcel

    2007-01-01

    Deux modèles micromécaniques de comportement élastoplastique, développés en adoptant une formulation en transformations finies et couplés à une technique de transition d’échelle autocohérente, sont utilisés pour étudier l'évolution des surfaces de charge d'un acier ferritique polycristallin lors de changements de trajets de déformation. L'importance de l'impact de la microstructure intragranulaire sur l'anisotropie du comportement lors de trajets complexes est montrée par l'intégration de la ...

  18. Analysis of Sex and Gender Content in Allied Health Professions' Curricula.

    Stickley, Lois; Sechrist, Dawndra; Taylor, LesLee

    2016-01-01

    Sex and gender differences in rehabilitation are important because more than half of patients seen by allied health professionals are female. Sex- and gender-specific curricula should be audited to enhance interprofessional education in women's health. The research question was: What is the extent of information about sex and gender differences that is included in selected allied health professions curricula? Student scholars from allied health programs audited courses in real time for references to sex and gender differences. The data were analyzed using content analysis. The emphasis of instruction included primarily statements of facts for the physical and occupational therapy programs and brief discussions in the athletic training program. There was a significant difference among the categories of emphasis for the programs (X2 = 391.23, panalysis of sex and gender differences in selected allied health professions. No textual inferences were made, but the study reported on the topics discussed and the extent of the sharing of information. PMID:27585612

  19. Effect of Impurities and Cerium on Stress Concentration Sensitivity of Al-Li Based Alloys

    孟亮; 田丽

    2002-01-01

    A notch sensitivity factor was derived in order to evaluate the stress concentration sensitivity of Al-Li based alloys. The factor values for the Al-Li alloy sheets containing various contents of impurities and cerium addition were evaluated by determining the mechanical properties. It is found that the impurities Fe, Si, Na and K significantly enhance the stress concentration sensitivity of the alloys 2090 and 8090, whereas cerium addition reduces the stress concentration sensitivity to a certain degree for the high strength alloys. However, an excess amount of cerium addition in the high ductility alloy 1420 can significantly increase the stress concentration sensitivity. As compared with conventional aluminum alloys, the Al-Li based alloys generally show high stress concentration sensitivity. Therefore, a special attention must be paid to this problem in the practical application of Al-Li based alloys.

  20. What constitutes an excellent allied health care professional? A multidisciplinary focus group study

    Paans, W.; Wijkamp, J.S.; Wiltens, E.; Wolfensberger, M.V.C.

    2013-01-01

    Background Determining what constitutes an excellent allied health care professional (AHCP) is important, since this is what will guide the development of curricula for training future physical therapists, oral hygienists, speech therapists, diagnostic radiographers, and dietitians. This also determ

  1. What constitutes an excellent allied health care professional? : A multidisciplinary focus group study.

    Paans, W.; Wijkamp, J.S.; Wiltens, E.; Wolfensberger, M.V.C.

    2013-01-01

    Background: Determining what constitutes an excellent allied health care professional (AHCP) is important, since this is what will guide the development of curricula for training future physical therapists, oral hygienists, speech therapists, diagnostic radiographers, and dietitians. This also deter

  2. Bounds for Hecke eigenforms and their allied L-functions

    Zhang, Qing

    We consider Hecke eigenforms and their allied L-functions from three aspects in this thesis. First we generalize the Iwaniec's spectral large sieve estimates of Maass cusp form to the local version for all congruence groups of level q. Our approach is based on an inequality for a general bilinear form involving Kloosterman sums and Bessel functions. The exceptional eigenvalues emerge in the course of the proof. In the second part, we extend Luo's result to prove a general optimal bound for L4-norms of the dihedral Maass forms associated to Hecke's grossencharacters of a fixed real quadratic field. Given a fixed quadratic field with discriminant D, we remove the condition that the narrow class number of K is 1. The key ingredients are Watson and Ichino's formula and the local spectral large sieve inequality established in the first part. Finally we obtain a long equation intended to establish an upper bound for the second moment of symmetric square L-functions. Petersson trace formula plays an important role and we study thoroughly an analogue of Estermann series using Hurwitz zeta function and establish its meromorphic extension and functional equation. This work provides a useful approach to the further study for the central value of the symmetric square L-functions.

  3. Engaging men and women as allies: a workplace curriculum module to challenge gender norms about domestic violence, male bullying and workplace violence and encourage ally behavior.

    Wagner, K C; Yates, Diane; Walcott, Quentin

    2012-01-01

    This post-hoc analysis discusses a replicable workplace behavior change module called Men and Women As Allies, that was designed and implemented by a team of labor, management and community anti-violence educators at a private sector telecommunications employer. A job site-specific educational seminar linked issues of domestic violence to male bullying and workplace violence. It challenged social stereotypes about gender, taught skills to engage ally peer behavior and provided information on how to seek assistance from union, workplace and external community resources. PMID:22635154

  4. Caucasion allied health students' attitudes towards African Americans: implications for instruction and research.

    Steed, Robin

    2014-01-01

    In order to determine Caucasian allied health student racial attitudes towards the African American population, students and faculty of a Southern school of allied health professions were surveyed using the Racial Argument Scale (RAS). A one way ANOVA found a significant difference between allied health programs, p = .008, and post hoc testing found the Occupational Therapy Program's scores to be significantly lower (less negative towards Blacks) than the Physical Therapy and Physician Assistant Program's scores (p = .008 and p = .041 respectively). Student scores overall were significantly higher than faculty scores on the RAS (p = .014). The Speech-Language Pathology, Physician Assistant, and Physical Therapy Programs' scores as well the overall allied health student scores were found to be significantly higher than the population mean, thus indicating a higher negativity towards African Americans. The overall results of this study indicate that negative racial bias may be a serious problem in some allied health programs. Future instruction in cultural competency in allied health programs should address racial bias specifically, taking into account cognitive-perceptual errors that may perpetuate negative racial attitudes. PMID:25181786

  5. Soudage hybride Laser-MAG d'un acier Hardox® Hybrid Laser Arc Welding of a Hardox® steel

    Chaussé Fabrice

    2013-11-01

    Full Text Available Le soudage hybride laser-MAG est un procédé fortement compétitif par rapport aux procédés conventionnels notamment pour le soudage de fortes épaisseurs et les grandes longueurs de soudure. Il connait de ce fait un développement important dans l'industrie. La présente étude s'est portée sur la soudabilité de l'acier Hardox® par ce procédé. Un large panel de techniques de caractérisation a été employé (mesures thermiques, radiographie X, duretés Vickers, macrographie…. L'objectif étant de déterminer l'influence des paramètres du procédé sur la qualité de la soudure et d'étendre notre compréhension des phénomènes se déroulant lors de ce type de soudage. Hybrid Laser Arc Welding (HLAW technology is a highly competitive metal joining process especially when high productivity is needed and for the welding of thick plates. It is a really new technology but its implementation in industry accelerates thanks to recent improvements of high power laser equipment and development of integrated hybrid welding heads. This study focuses on weldability of Hardox® 450 steel by HLAW. Welding tests were conducted by making critical process parameters vary. Then a large panel of characterization techniques (X-Ray radiography, macroscopic examination and hardness mapping was used to determine process parameters influence on weldability of Hardox 450® Steel.

  6. Self-Medication Practice Among Allied and Non-Allied Health Students of the University of Santo Tomas

    JAY P. JAZUL

    2014-08-01

    Full Text Available – Self-medication is presumed to be widely practiced around the world. This can be defined as the use of drugs to treat self-diagnosed disorders or symptoms, or the intermittent or continued use of a prescribed drug for chronic or recurrent disease or symptoms. High level of education and professional status has also been mentioned as predictive factors for self-medication. Students from the allied and nonallied health institutions of the University of Santo Tomas were assessed for the factors of self-medication practices.A total of 66 graduating students were asked to accomplish the questionnaire. To ensure valid responses, the researchers supervised the respondents on accomplishing the questionnaires. Mean and range summarized the age while counts and percentages summarized the gender, school, practice of selfmedication, therapeutic classes, health conditions, reasons and sources of self-medication. A total of 55 reported that they practice self-medication. On the total 66 respondents practicing self-medication is antibiotics, anti-allergic and antihistamine, and decongestants. The 55 respondents documented headache to be the most self-treated health condition followed by cough and cold, toothache, muscle pain pimples, back/chest pain, dizziness, and diarrhea/constipation. Significantly greater percentage of females (p=0.038 use antibiotics. Respondents with high self-care orientation are self-medicating on antibiotics (p=0.027, anti-allergic (p<0.001, and herbal medicine (p=0.001 than respondents with low self-care orientation.

  7. Impact and feasibility of the Allied Health Professional Enhancement Program placements – experiences from rural and remote Queensland

    Kumar, Saravana

    2016-01-01

    Priya Martin,1,2 Saravana Kumar,2 Melinda Stone,1 LuJuana Abernathy,1 Vanessa Burge,1 Lucylynn Lizarondo3 1Allied Health Education and Training, Cunningham Centre, Darling Downs Hospital and Health Service, Toowoomba, QLD, 2International Centre for Allied Health Evidence (iCAHE), School of Health Sciences, University of South Australia, 3Joanna Briggs Institute, University of Adelaide, Adelaide, SA, AustraliaBackground: Allied health professionals practicing in rural and remote areas are ofte...

  8. Quality improvement – rival or ally of practice development?

    Gavin Lavery

    2016-05-01

    Full Text Available The majority of nurses, doctors, allied health professionals and other healthcare staff possess a strong desire to provide the best possible care and experience for their patients. Unfortunately, this sometimes falls short of what was planned or intended (Institute of Medicine, 2001, p 23. The gap between care intended and care delivered can be explained by problems with systems and processes and/or people and culture. The narrowing of this gap is the focus of many strategies, methodologies and approaches. Practice development is described as ‘an activity focused on developing people and practice for the ultimate purpose of achieving high-quality person-centred care’ and a ‘methodology that aims to achieve effective workplace cultures that are person-centred’ (Shaw, 2012; Manley et al., 2014. Practice development undoubtedly has a strong focus on people and culture and the potential to change processes and systems. Another approach, widely referred to as quality improvement, aims to improve safety, effectiveness and person-centredness in healthcare using principles proven effective in other industries such as manufacturing – notably car manufacturing (Toyota, oil production, nuclear power and aviation. The fundamental principles of quality improvement for healthcare include making care reliable (every patient receiving care as intended every time, using well-designed processes and reducing variation (agreeing a consistent way to provide care. At first glance this may appear to be an approach suited only to systems and processes. However, better processes, designed by those who use them, resulting in fewer errors and less re-working or working around problems, can reduce stress on staff, offer greater job satisfaction with improved morale and free up time to provide person-centred care. In his report, A Promise to Learn – a Commitment to Act (2013, p 24, Professor Don Berwick says: ‘Mastery of quality and patient safety sciences and

  9. Using staffing ratios for workforce planning: evidence on nine allied health professions

    Cartmill Linda

    2012-02-01

    Full Text Available Abstract Background Modern healthcare managers are faced with pressure to deliver effective, efficient services within the context of fixed budget constraints. Managers are required to make decisions regarding the skill mix of the workforce particularly when staffing new services. One measure used to identify numbers and mix of staff in healthcare settings is workforce ratio. The aim of this study was to identify workforce ratios in nine allied health professions and to identify whether these measures are useful for planning allied health workforce requirements. Methods A systematic literature search using relevant MeSH headings of business, medical and allied health databases and relevant grey literature for the period 2000-2008 was undertaken. Results Twelve articles were identified which described the use of workforce ratios in allied health services. Only one of these was a staffing ratio linked to clinical outcomes. The most comprehensive measures were identified in rehabilitation medicine. Conclusion The evidence for use of staffing ratios for allied health practitioners is scarce and lags behind the fields of nursing and medicine.

  10. Étude expérimentale de l'interaction laser-matière dans le cas du soudage d'un acier inoxydable austénitique par laser Nd:YAG continu de 2 kW

    Dumord, E.; Jouvard, J.; Grevey, D.; Druetta, M.; Ottavi, P.

    1997-01-01

    L'interaction laser-matière se produisant lors du soudage par laser Nd:YAG continu de 2 kW d'un acier inoxydable austénitique est étudiée, et notamment les effets liés à la présence du capillaire dans le bain liquide, de façon à définir les paramètres utiles à la modélisation du processus. Le facteur d'absorption des cibles utilisées a été mesuré afin de mieux appréhender l'interaction laser Nd:YAG/acier inoxydable austénitique 304. Puis une approche expérimentale de détermination de l'angle ...

  11. Etude métallurgique du soudage par friction malaxage sur un acier à haute limite élastique destiné à la construction navale : le 80 HLES Metallurgical study of friction stir welding on a steel high yield for shipbuilding: The 80 HLES

    Allart Marion; Rückert Guillaume; Paillard Pascal

    2013-01-01

    Le soudage par friction malaxage est un procédé de soudage relativement récent (début des années 90). Il est aujourd'hui utilisé couramment sur des alliages légers mais ne l'est que depuis peu sur les aciers. L'objectif de nos travaux est de chercher à caractériser la microstructure métallurgique et l'état de déformation et de contrainte après soudage par friction malaxage sur des échantillons d'aciers à haute limite élastique utilisés dans l'industrie navale. Nous chercherons à comprendre le...

  12. A TECHNIQUE FOR IMPROVING THE TOUGHNESS OF Al-Li POWDER METALLURGY ALLOYS

    Webster, D.

    1987-01-01

    A technique has been developed for increasing the toughness of Al-Li products made by powder metallurgy. The technique which involves the addition of unalloyed aluminum powder to Al-Li powder before compaction was evaluated with Al-Li-Cu-Mg-Zr alloys (Al 8090), and Al-Li-Zn-Cu-Mg-Zr and Al-Li-Mg-Si-Cr alloys . The addition of 15% aluminum to Al 8090 aged at 422K for 40 h produced an increase in impact toughness of 215% at the expense of a drop in yield strength of 11%. The Al-Li-Mg-Si-Cr allo...

  13. Compréhension des mécanismes à l’origine de l’adhésion de Saccharomyces cerevisiae sur acier inoxydable: Implications pour l’hygiène des surfaces en industrie agroalimentaire

    Guillemot, Gaëlle

    2006-01-01

    Dans l’industrie agroalimentaire, l’adhésion de microorganismes contaminants sur les surfaces induit des effets néfastes à la fois en terme de qualité, d’hygiène et de santé publique. Dans cette étude, une forte adhésion de Saccharomyces cerevisiae sur l’acier inoxydable a été mise en évidence, à l’aide d’une chambre à écoulement cisaillé. La spécificité de ce matériau par rapport à d’autres surfaces « contrôle » a été démontrée pour des souches de levures d’origine variée. Cette spécificité ...

  14. Sur la modélisation du comportement thermomécanique et métallurgique des aciers. Application au procédé de soudage et de traitements thermiques

    Trinh, Ngoc Thuy

    2008-01-01

    Le travail de la thèse porte sur la modélisation fine des lois de comportement thermomécaniques et métallurgiques des aciers afin de déterminer l'état mécanique résiduel des structures lors d'une opération de soudage. Il s'agit de définir les cinétiques de transformation de phases à l'état solide ainsi que le comportement mécanique du matériau multiphasé. Dans un cadre théorique original-les matériaux standards généralisés avec des liaisons internes-nous avons proposé des modèles de comportem...

  15. Utilisation d'ondes de Love pour déterminer l'épaisseur d'une couche de cuivre déposée électrolytiquement sur un substrat d'acier

    Kiełczyński, P.; Pajewski, W.

    1986-01-01

    Cet article présente les résultats d'une expérience ayant pour objet de déterminer l'épaisseur d'une couche superficielle d'un matériau élastique à l'aide d'ondes de surface transversales et horizontales du type de Love. Les principes théoriques de la méthode appliquée ont été développés par les auteurs précédemment (NDT Int. 18, n° 1 (1985) 25-29). Les mesures ont été effectuées pour une couche de cuivre déposée par électrolyse sur un substrat d'acier. Plusieurs facteurs qui peuvent rendre l...

  16. Modélisation tridimensionelle de la fermeture induite par plasticité lors de la propagation d'une fissure de fatigue dans l'acier 304L

    Fiordalisi, Saverio,

    2014-01-01

    Ce travail de thèse s’inscrit dans le cadre des problèmes de fissuration par fatigue, détectéesnotamment dans des structures nucléaires et se situe dans la continuité de travaux déjà réalisésau laboratoire. L’objectif de cette étude est la réalisation d’un outil numérique de prédictiondu phénomène de fermeture induite par plasticité, au cours de la propagation d’une fissure defatigue dans une éprouvette CT, dans un acier inoxydable 304L, en prenant en comptel’influence simultanée de la forme ...

  17. Biodétérioration des structures portuaires en acier : synergie entre la physico-chimie du fer en milieu marin et les micro-organismes sulfurogènes

    Langumier, Mikaël

    2011-01-01

    Le but de ce travail était de mieux comprendre les mécanismes mis en jeu lors de la corrosion marine des structures en acier. Ces mécanismes impliquant l'influence de micro-organismes vivants, et notamment des bactéries sulfurogènes, l'étude a couplé des méthodes physico-chimiques à des techniques de microbiologie et de biologie moléculaire. Dans un premier temps, un système modèle de laboratoire a été élaboré afin d'étudier en détail les interactions entre les bactéries sulfato-réductrices (...

  18. Patient safety in primary allied health care: what can we learn from incidents in a dutch exploratory cohort study?

    Dulmen, S.A. van; Tacken, M.A.J.B.; Staal, J.B.; Gaal, S.; Wensing, M.J.P.; Nijhuis-Van der Sanden, M.W.G.

    2011-01-01

    BACKGROUND: : Research on patient safety in allied healthcare is scarce. Our aim was to document patient safety in primary allied healthcare in the Netherlands and to identify factors associated with incidents. DESIGN AND SUBJECT:: A retrospective study of 1000 patient records in a representative sa

  19. Comportement des poteaux composites en profils creux en acier remplis de béton Behavior of composite columns in hollow steel section filled with concrete

    Othmani N.

    2012-09-01

    Full Text Available Le but de cet article, est la determination des rigidites flexionnelles EIx et EIy d’fune section mixte acier beton et plus precisement d’fun poteau en tube d’facier de section rectangulaire, remplie de beton, sollicitee a la flexion bi-axiale (N, Mx et My. L’festimation des rigidites sera faite a partir d’fune approche theorique par une analyse du poteau en elements finis (element barre a 4 degres de liberte, basee sur les conditions d’fequilibres a mi-portee en utilisant la relation moment-courbure (M–Φ de l’felement deforme par application de l’fequation suivante: EI=M/Φ. Le comportement des materiaux est celui comme adopte par les reglements Eurocode 2 et 3, respectivement pour le beton et l’facier. Afin de valider l’fapproche theorique utilisee dans cette etude, deux comparaisons ont ete faites : une premiere permettant de comparer les resultats des rigidites determinees par les relations moments courbures et celles calculees par l’fEurocode 4 et une deuxieme comparaison entre les charges de ruines de deux poteaux de grandeurs natures avec ceux testes au laboratoire [2]. Au vu des resultats obtenus, nous pouvons conclure que l’approche théorique utilisée dans cette étude ainsi que les modèles de comportement des matériaux sont adéquats pour ce genre de problèmes. The purpose of this paper is the determination of flexural stiffness EIx and EIy of a concrete filled rectangular cross section of a composite steel column, under biaxial bending (N, Mx and My. The rigidities will be estimated from a theoretical approach using a finite element analysis (element bar with 4 degrees of freedom, based on the equilibrium conditions at mid-span using the moment-curvature relationships (M–Φ of the deformed element by applying the following equation: EI=M/Φ. The material behavior is the one adopted by Eurocode 2 and 3, respectively, for concrete and steel. To validate the theoretical approach used, two comparisons

  20. Enhancing Discipline-Specific Training across Allied Health Professions through Reflective Supervision

    Geller, Elaine; Wightman, Barbara; Rosenthal, Harold

    2010-01-01

    The professional preparation of allied health professionals typically focuses on the acquisition of knowledge in a particular area of expertise with less consideration of training on social-emotional development and on how to engage parents in the clinical process, parent-child relationships, or principles of mental health. The authors explore how…

  1. Allied Health Students' Learning-Styles Identified with Two Different Assessments

    Morton-Rias, Dawn; Dunn, Rita; Terregrossa, Ralph; Geisert, Gene; Mangione, Robert; Ortiz, Samuel; Honigsfeld, Andrea

    2008-01-01

    This research identified and compared the learning styles of 154 ethnically diverse, upper division undergraduate and graduate students in Allied Health utilizing the "Building Excellence" (BE) (Rundle & Dunn, 2000) and the "Productivity Environmental Preference Survey" (PEPS) (Dunn, Dunn, & Price, 1996). Relationships among age, class standing,…

  2. Corrosion Properties of Light-weight and High-strength 2195 Al-Li Alloy

    XU Yue; WANG Xiaojing; YAN Zhaotong; LI Jiaxue

    2011-01-01

    The intergranular corrosion and exfoliation corrosion of 2195 Al-Li alloy treated by multi-step heating-rate controlled aging (MSRC)are studied.The corrosion features of 2195 Al-Li alloys which are respectively treated by high-temperature nucleation MSRC(H-M)and low-temperature nucleation MSRC(L-M)are contrasted.And the corrosion mechanism of 2195 Al-Li alloy is also discussed from the viewpoint of microstructure(types,distribution,etc.)of the strengthening phase.The results show that 2195 Al-Li alloy after H-M is more susceptible to intergranular corrosion and exfoliation corrosion than that of alloy after L-M.The degree of intergranular corrosion increases with the increase of predeformation amount and the surface parallel to the rolling direction is more prone to exfoliation corrosion.The main reason of intergranular corrosion and exfoliation corrosion is the formation of corrosion galvanic couples among T1 phase,θ' phase and grain boundary precipitate-free zones(PFZ).

  3. Identification of a Core Curriculum in Gerontology for Allied Health Professionals. Final Report.

    Hedl, John J.; And Others

    The overall goal of this project was to identify a core curriculum in gerontology for seven allied health professions (radiologic technologist, radiation therapist, respiratory therapist, dental hygienist, dental assistant, physical therapy assistant, and occupational therapy assistant). The project also identified the current state of gerontology…

  4. Men as Allies: The Efficacy of a High School Rape Prevention Intervention

    Hillenbrand-Gunn, Theresa L.; Heppner, Mary J.; Mauch, Pamela A.; Park, Hyun-joo

    2010-01-01

    This study investigated the effects of a Men as Allies--based intervention on high school students' rape-supportive attitudes and behaviors. As hypothesized at posttest, the male and female experimental groups demonstrated a significant decrease in rape-supportive attitudes, which was maintained at follow-up. Male participants viewed peers'…

  5. First Universities Allied for Essential Medicines (UAEM) Neglected Diseases and Innovation Symposium

    Musselwhite, Laura W.; Maciag, Karolina; Lankowski, Alex; Gretes, Michael C.; Thomas E Wellems; Tavera, Gloria; Goulding, Rebecca E.; Guillen, Ethan

    2012-01-01

    Universities Allied for Essential Medicines organized its first Neglected Diseases and Innovation Symposium to address expanding roles of public sector research institutions in innovation in research and development of biomedical technologies for treatment of diseases, particularly neglected tropical diseases. Universities and other public research institutions are increasingly integrated into the pharmaceutical innovation system. Academic entities now routinely undertake robust high-throughp...

  6. Student Recruitment in Allied Health Educational Programs: The Importance of Initial Source of Contact.

    Baldwin, Alphonso; Agho, Augustine O.

    2003-01-01

    A survey of 1,809 students found that information influencing their decision to enroll in allied health programs came from a variety of sources. Practicing health professionals were the most influential. Only physical therapy and dental hygiene students identified high school counselors as an important source. (Contains 20 references.) (JOW)

  7. The availability and use of allied health care in care homes in the Midlands, UK: commentaries.

    Leemrijse, C.; Veenhof, C.; Boer, M.E. de

    2009-01-01

    The demographic trends of continuing growth of the number of older people will lead to an increasing need for long-term services such as nursing homes. The intensive work delivered by the rehabilitative services provided in the nursing homes includes care by a variety of allied health care personnel

  8. Developing Allies to Transgender and Gender-Nonconforming Youth: Training for Counselors and Educators

    Case, Kim A.; Meier, S. Colton

    2014-01-01

    Lack of training regarding transgender youth leaves K-12 educators unprepared to become allies to this disenfranchised community and attend to their needs. This article explores the pedagogical strategies of two professional workshop models (GLSEN Houston training and the Gender Infinity practitioner training), which provide skills and resources…

  9. Occupational Analysis: Hospital Radiologic Technologist. The UCLA Allied Health Professions Project.

    Reeder, Glenn D.; And Others

    In an effort to meet the growing demand for skilled radiologic technologists and other supportive personnel educated through the associate degree level, a national survey was conducted as part of the UCLA Allied Health Professions Project to determine the tasks performed by personnel in the field and lay the groundwork for development of…

  10. Plagiarism: using a collaborative approach in an online allied health professions course.

    Pence, Patricia L

    2012-01-01

    The purpose of the study was to evaluate the effectiveness of interventions to increase the awareness and understanding of plagiarism among undergraduate students enrolled in an online allied health professions course in a community college in the Midwestern United States. The results suggested that the interventions were effective in educating students about how to avoid plagiarism. PMID:22157995

  11. A Reaction to: What about Health Educators? Nutrition Education for Allied Health Professionals

    Turner, Lori W.; Knol, Linda; Meyer, Mary Kay

    2012-01-01

    "What about Health Educators? Nutrition Education for Allied Health Professionals" describes an important issue in health care that is the provision of nutrition education. Obesity and chronic disease rates are rapidly increasing. Due to increase in the prevalence rates of obesity and nutrition-related chronic diseases, there is a growing need for…

  12. Building Teams in Primary Care: What Do Nonlicensed Allied Health Workers Want?

    Saba, George W.; Taché, Stephanie; Ward, Lisa; Chen, Ellen H.; Hammer, Hali

    2011-01-01

    Introduction: Nonlicensed allied health workers are becoming increasingly important in collaborative team care, yet we know little about their experiences while filling these roles. To explore their perceptions of working as health coaches in a chronic-disease collaborative team, the teamlet model, we conducted a qualitative study to understand the nature and dynamics of this emerging role.

  13. A Survey of Practices in Hospital Pharmacies. The UCLA Allied Health Professions Project.

    Cullen, Thomas D.; Henrich, Robert R.

    A survey was conducted as part of the UCLA Allied Health Professions Project to determine what procedures are used in health care facility pharmacies for the performance of tasks previously selected for inclusion in a proposed curriculum for pharmacy technicians. Questionnaires were distributed to a national sample of 48 health care facilities,…

  14. Extending the Ally Model of Social Justice to Social Work Pedagogy

    Gibson, Priscilla Ann

    2014-01-01

    Social work students, regardless of their multiple social identities in oppressed and oppressor groups, are called upon to take action against social injustice. This conceptual article introduces the Ally Model of social justice and its alignment with social work values and goals and recommends it to social work educators as a pedagogical tool to…

  15. What constitutes an excellent allied health care professional? A multidisciplinary focus group study

    Paans W; Wijkamp I; Wiltens E; Wolfensberger MV

    2013-01-01

    Wolter Paans, Inge Wijkamp, Egbert Wiltens, Marca V Wolfensberger Research and Innovation Group Talent Development in Higher Education and Society, Hanze University of Applied Sciences, Groningen, The Netherlands. Background: Determining what constitutes an excellent allied health care professional (AHCP) is important, since this is what will guide the development of curricula for training future physical therapists, oral hygienists, speech therapists, diagnostic radiographers, and dietitian...

  16. Modern National Historiography оn the Attitude of Russian Society to the Entente Allies

    Samokhina Galina

    2014-11-01

    Full Text Available The issues on the diplomacy in public opinion and public consciousness is becoming increasingly important in modern domestic research on the history of Russia’s foreign policy. The article analyzes the works devoted to the social perception of Russia’s relations with allies in the Entente. The attention is paid to the historiography of the foreign political ideas of liberal and conservative leaders represented in political discourse, nonfiction works and periodicals. Liberals and conservatives were not only the object of public judgements – they formed them as well. A significant range of works deals with the problem of the relationship between the Entente allies and the Russian population. The social perception of England and France is considered by researchers both at the level of direct political, economic and military contacts, and based on an abstract image of an ally in the mass consciousness. The evolution of public perceptions of the allies was determined by the situation in the country and on the fronts and by the role of foreign stereotypes. The author analyzes the interconnection of alliance issue with the national interests of Russia, reveals research approaches to the study of the development of Patriotic and revolutionary moods, traces the differences in the estimates of England and France. The present study complements the research on diplomatic history, and yet represents a separate research problem.

  17. Kuidas õpilasmalevat laiendada? / Alli Lunter, Jüri Ginter, Lembit Jakobson ... [jt.

    2012-01-01

    Küsimusele vastavad: Viljandi maagümnaasiumi õpetaja Alli Lunter, TÜ õppejõud Jüri Ginter, Unipiha kooli õpetaja Lembit Jakobson, riigikogu liige ja demokraatide ühenduse esimees Rainer Vakra ja TLÜ ajalooinstituudi teadur Ain Lavi

  18. Kuidas möödus vaheaeg? / Sulev Valdmaa, Alli Lunter, Epp-Mare Kukemelk ... [jt.

    2011-01-01

    Küsimusele vastavad Kuusalu keskkooli õpetaja-metoodik Sulev Valdmaa, Viljandi maagümnaasiumi eesti keele õpetaja Alli Lunter, Tallinna 37. keskkooli ja Tallinna Lilleküla gümnaasiumi meediaõpetaja Epp-Mare Kukemelk, haridus- ja teadusministeeriumi kommunikatsioonibüroo konsultant Rein Joamets ja Unipiha algkooli õpetaja Lembit Jakobson

  19. Arthritis Research and Education in Nursing and Allied Health: A Forum.

    Public Health Service (DHHS), Rockville, MD.

    A summary of proceedings of the Forum on Arthritis Research and Education in Nursing and Allied Health is presented. The keynote address, "The Burden of Arthritis," by Dorothy P. Rice, provides data collected by the National Center for Health Statistics on the prevalence of arthritis, the burden it imposes, and the volume, type, and cost of health…

  20. Patient education: the role of the physician assistant and other allied health professionals

    Alexander, Lisa Mustone

    1987-01-01

    The physician assistant (PA) has been on the leading edge in the development of midlevel health providers since the 1960s. As an allied health professional, PAs, along with nurse practitioners, midwives, nurse anesthetists, and others, emphasize patient education. Oftentimes, patient education can be introduced in the academic setting, but true learning comes with experience as a student in clinical training.

  1. Policy and System Change and Community Coalitions: Outcomes from Allies against Asthma

    Clark, Noreen M.; Lachance, Laurie; Doctor, Linda Jo; Gilmore, Lisa; Kelly, Cindy; Krieger, James; Lara, Marielena; Meurer, John; Friedman Milanovich, Amy; Nicholas, Elisa; Rosenthal, Michael; Stoll, Shelley C.; Wilkin, Margaret

    2014-01-01

    Objectives: We assessed policy and system changes and health outcomes produced by the Allies Against Asthma program, a 5-year collaborative effort by 7 community coalitions to address childhood asthma. We also explored associations between community engagement and outcomes. Methods: We interviewed a sample of 1,477 parents of children with asthma…

  2. A Learner-Centered Molecular Modeling Exercise for Allied Health Majors in a Biochemistry Class

    Fletcher, Terace M.; Ershler, Jeff

    2014-01-01

    Learner-centered molecular modeling exercises in college science courses can be especially challenging for nonchemistry majors as students typically have a higher degree of anxiety and may not appreciate the relevance of the work. This article describes a learner-centered project given to allied health majors in a Biochemistry course. The project…

  3. A protocol for a systematic review of knowledge translation strategies in the allied health professions

    Hartling Lisa

    2011-06-01

    Full Text Available Abstract Background Knowledge translation (KT aims to close the gap between knowledge and practice in order to realize the benefits of research through (a improved health outcomes, (b more effective health services and products, and (c strengthened healthcare systems. While there is some understanding of strategies to put research findings into practice within nursing and medicine, we have limited knowledge of KT strategies in allied health professions. Given the interprofessional nature of healthcare, a lack of guidance for supporting KT strategies in the allied health professions is concerning. Our objective in this study is to systematically review published research on KT strategies in five allied health disciplines. Methods A medical research librarian will develop and implement search strategies designed to identify evidence that is relevant to each question of the review. Two reviewers will perform study selection and quality assessment using standard forms. For study selection, data will be extracted by two reviewers. For quality assessment, data will be extracted by one reviewer and verified by a second. Disagreements will be resolved through discussion or third party adjudication. Within each profession, data will be grouped and analyzed by research design and KT strategies using the Effective Practice and Organisation of Care Review Group classification scheme. An overall synthesis across professions will be conducted. Significance A uniprofessional approach to KT does not represent the interprofessional context it targets. Our findings will provide the first systematic overview of KT strategies used in allied health professionals' clinical practice, as well as a foundation to inform future KT interventions in allied healthcare settings.

  4. Are gender equality institutions the policy allies of the feminist movement? A contingent "yes" in the Spanish central state

    Valiente Fernández, Celia

    2007-01-01

    This article studies the extent to which gender equality institutions are the policy allies of the feminist movement in Spain. A policy ally of the feminist movement is defined as one that adopts the demands of the movement and includes them in the policy process. This article analyses the role played by the Women’s Institute (WI) between 1983 and 2003 in 12 policy debates, in a third of which the WI was an ally of the movement. Two circumstances are identified as necessary for the WI to act ...

  5. Mathematical modeling of the socalled Allis test: a field study in orthopedic confusion

    Haneline Michael

    2007-01-01

    Full Text Available Abstract Background Chiropractors use a variety of supine and prone leg checking procedures. Some, including the Allis test, purport to distinguish anatomic from functional leg length inequality. Although the reliability and to a lesser extent the validity of some leg checking procedures has been assessed, little is known on the Allis test. The present study mathematically models the test under a variety of hypothetical clinical conditions. In our search for historical and clinical information on the Allis test, nomenclatural and procedural issues became apparent. Methods The test is performed with the subject carefully positioned in the supine position, with the head, pelvis, and feet centered on the table. After an assessment for anatomic leg length inequality, the knees are flexed to approximately 90°. The examiner then sights the short leg side knee sequentially from both the foot and side of the table, noting its relative locations: both its height from the table and Y axis position. The traditional interpretation of the Allis test is that a low knee identifies a short tibia and a cephalad knee a short femur. Assuming arbitrary lengths and a tibio/femoral ratio of 1/1.26, and a hip to foot distance that placed the knee near 90°, we trigonometrically calculated changes in the location of the right knee that would result from hypothetical reductions in tibial and femoral length. We also modeled changes in the tibio/femoral ratio that did not change overall leg length, and also a change in hip location. Results The knee altitude diminishes with either femoral or tibial length reduction. The knee shifts cephalad when the femoral length is reduced, and caudally when the tibial length is reduced. Changes in the femur/tibia ratio also influence knee position, as does cephalad shifting of the hip. Conclusion The original Allis (aka Galeazzi test was developed to identify gross hip deformity in pediatric patients. The extension of this test to

  6. Allie Abrahamson: APA/APAGS Award for Distinguished Graduate Student in Professional Psychology.

    2014-11-01

    The APA/APAGS Award for Distinguished Graduate Student in Professional Psychology is awarded on an annual basis by the APA Board of Professional Affairs (BPA) and the American Psychological Association of Graduate Students (APAGS) to a graduate student who has demonstrated outstanding practice and application of psychology. A qualified candidate must demonstrate exemplary performance in working with an underserved population in an applied setting or have developed an innovative method for delivering health services to an underserved population. This year there are joint recipients of the award, Allie Abrahamson and Rebeccah A. Bernard. Their vision, creativity, courage, and dedication led them to create the Human Rights Forum at Chestnut Hill College to promote human rights education, awareness, and community service opportunities for doctoral students. Allie Abrahamson's award citation, biography, and a selected bibliography are presented here. PMID:25486169

  7. Study on Damage of High Temperature Plastic Deformation for Al-Li Alloy

    2001-01-01

    The security of use for Al-Li alloy will be greatly influenced by the damage degree of plastic deformation within it at high temperature . Based on continuum damage mechanics theory, the damage evolution of Al-5.44Mg-2.15Li-0.12Zr alloy during plastic deforming at high temperature is simulated by using the damage evolution model of high temperature plastic deformation. The changing rule of its inner damage with deformation temperature, strain rate and strain is gained in this paper. The equation of damage evolution for high temperature plastic deformation is developed, providing an academic basis for the technology of plastic process of Al-Li alloys.

  8. Retention and release of tritium in aluminum clad, Al-Li alloys

    Tritium retention in and release from aluminum clad, aluminum-lithium alloys is modeled from experimental and operational data developed during the thirty plus years of tritium production at the Savannah River Site. The model assumes that tritium atoms, formed by the 6Li(n,α)3He reaction, are produced in solid solution in the Al-Li alloy. Because of the low solubility of hydrogen isotopes in aluminum alloys, the irradiated Al-Li rapidly becomes supersaturated in tritium. Newly produced tritium atoms are trapped by lithium atoms to form a lithium tritide. The effective tritium pressure required for trap or tritide stability is the equilibrium decomposition pressure of tritium over a lithium tritide-aluminum mixture. The temperature dependence of tritium release is determined by the permeability of the cladding to tritium and the local equilibrium at the trap sites. This model is used to calculate tritium release from aluminum clad, aluminum-lithium alloys. 9 refs., 3 figs

  9. The supply problem of the allies; Quand l'or noir coulait a flots

    Baudoin, Ph.

    2004-07-01

    Owing to unprecedented mechanization, everything to do with petroleum supplies had a crucial role to play in World War II. In the wake of Operation Overlord, the battle grounds of Normandy saw technologies deployed on a huge scale. Logistics were a major problem whether fighting in the air or on the ground, with oil and fuel supplies a critical element. With no fuel, this gigantic military operation could never have been carried through, for with aircraft grounded and tanks grinding to a halt, all would soon have been lost. Accordingly, the Allies made bold logistical plans, which nevertheless had shortcomings calling for improvisation. The cross-Channel pipeline PLUTO, the impressive stream of road traffic known as the Red Ball Express, rapid repairs to the railroads, trains of barges on the Seine, DC-3s transporting oil and fuel, were all pieces in the jigsaw puzzle bringing supplies to Allied units on their way across Normandy in 1944. (A.L.B.)

  10. ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY DURING CORROSION PROCESS OF 8090 Al-Li ALLOY IN EXCO SOLUTION

    J.F. Li; Z.Q. Zheng; C.Y. Tan; S.C. Li; Z. Zhang; J.Q. Zhang

    2004-01-01

    The corrosion behavior and electrochemical impedance spectroscopy ( EIS) features of 8090 Al-Li alloys in EXCO solution were investigated, and the EIS was simulated using an equivalent circuit. At the beginning of immersion in EXCO solution, the EIS is comprised by a depressed capacitive arc at high-mediate frequency and an inductive arc at low frequency, and the inductive component decreases and disappears with immersion time. Once exfoliation or severe pitting corrosion is produced, two capacitivearcs appear in the EIS. These two capacitive arcs are originated from the two parts of the corroded alloy surface, the original flat alloy surface and the new inter-face exposed to the aggressive EXCO solution due to the exfoliation or pitting corrosion.Some corrosion development features of 8090 Al-Li alloys in EXCO solution can be obtained through simulated EIS information.

  11. Quality of care of nurse-led and allied health personnel-led primary care clinics

    Chin, WY; Lam, CLK; Lo, SV

    2011-01-01

    Objectives To review the literature regarding quality of care of nurse-led and allied health personnel-led primary care clinics with specific attention to the quality indicators for fall prevention, continence care, pulmonary rehabilitation, mental health, pharmaceutical care, and wound care services. Data sources Literature search from 1990 to 2010 including Ovid Medline, Cochrane Database, RAND (Research and Development) Corporation Health Database, the ACOVE (Assessing the Care of Vulnerab...

  12. Skills escalator in allied health: a time for reflection and refocus

    Gilmore LG

    2011-09-01

    Full Text Available Lisa G Gilmore1, Joanne H Morris1, Karen Murphy2, Karen Grimmer-Somers3, Saravana Kumar31The Canberra Hospital, ACT Government Health Directorate, Canberra, ACT; 2ACT Government Health Directorate, Canberra, ACT; 3International Centre for Allied Evidence, University of South Australia, Adelaide, SA, AustraliaAbstract: It is abundantly clear that the health workforce of tomorrow will meet a number of unique challenges. There are a number of drivers for this, including the changing demographics of patients and health professionals, changing working patterns and mobility of the health workforce, evolving models of care, emerging evidence base, altering funding models, and the need to underpin health care service delivery with safety, effectiveness, patient centeredness, efficiency, equity, and timeliness. It is in this time of change that role extension within health disciplines is seen as an important tool to meet some of these challenges. Role extension is viewed as a skills escalator, where practitioners move up the skills escalator within the scope of their discipline, to advance it and then, with training, extend it. Within allied health, in some disciplines, advanced and extended scope of practice initiatives have mushroomed. Often these initiatives have been ad hoc, and opportunistically created in response to local needs and requirements. As these initiatives are local and context-dependent, to date there is very little uniformity or congruency between these initiatives. This has led to variability in implementation, lack of rigorous evaluations and, ultimately, poor long-term sustainability. In this paper, we reflect on a number of key issues, drawing on our own experiences in undertaking such initiatives, which need to be taken into account when considering advanced and extended scope of practice for allied health.Keywords: allied health, skill escalation, extended scope of practice, advanced scope of practice

  13. New insights in Salicornia L. and allied genera (Chenopodiaceae) inferred from nrDNA

    Papini, A.; G. Trippanera; F. Maggini; R. Filigheddu; Biondi, E.

    2004-01-01

    A phylogenetic analysis was performed based on ITS DNA sequences of fourteen samples from different sources of six species of Salicornia, the three allied genera Arthrocnemum, Sarcocornia and Halocnemum of the same tribe Salicornieae, and other genera of the subfamily Salicornioideae used in previous studies. Bassia hirsuta, Camphorosma monspeliaca (subfamily Chenopodioideae) and four species of Suaeda (subf. Suaedoideae) were chosen as outgroups. Results show that the annual genu...

  14. Ultrasonic location for core end of Al-Li alloy and aluminium composite tube

    The locating method of the core end of Al-Li alloy is studied by ultrasonic wave time-frequency analysis. Adopting the high frequency and narrow pulse emission the composite metal tube can be located by means of the states of longitudinal wave and transverse wave. The dissection of the sample proves that the core end thickness is 0.1 mm and the location precision is 2 mm

  15. Patterns of waste generation, treatment and disposal in the chemical and allied industries in Ghana

    Osei-Wusu Achaw

    2012-01-01

    Environmental pollution and degradation in urban Ghana has been on the increase as a result of the nations drive towards industrialization, a generally weak regulatory regime, and a lack of capacity to manage the environment. This situation is affecting the well-being and livelihood of affected communities. As part of an effort to address the issue, a thirteen (13) item questionnaire was designed and distributed to seventy (70) companies in the chemical and allied industry to solicit and anal...

  16. A huge world with countless possibilities: Overseas study tours for students in an allied health field

    Konishi, Isamu

    2014-01-01

    Since 2004, the Niigata Physical Therapy Department has organized several overseas study tours for its students. More than 100 students have participated in these tours to date. In this report, we describe the achievements of these study tours and of the recently developed exchange programs with our partner universities in the Philippines. For students in an allied health field, traveling abroad to observe and interact with international systems elated to their studies and discussing this ex...

  17. Extended roles for allied health professionals: an updated systematic review of the evidence

    Saxon RL

    2014-10-01

    Full Text Available Robyn L Saxon,1–3 Marion A Gray,1,2 Florin I Oprescu1,2 1School of Health and Sports Sciences, Faculty of Science, Health, Education and Engineering, 2Cluster for Health Improvement, University of the Sunshine Coast, Sippy Downs, QLD, 3Queensland Health, Brisbane, QLD, Australia Background: Internationally, health care services are under increasing pressure to provide high quality, accessible, timely interventions to an ever increasing aging population, with finite resources. Extended scope roles for allied health professionals is one strategy that could be undertaken by health care services to meet this demand. This review builds upon an earlier paper published in 2006 on the evidence relating to the impact extended scope roles have on health care services. Methods: A systematic review of the literature focused on extended scope roles in three allied health professional groups, ie, physiotherapy, occupational therapy, and speech pathology, was conducted. The search strategy mirrored an earlier systematic review methodology and was designed to include articles from 2005 onwards. All peer-reviewed published papers with evidence relating to effects on patients, other professionals, or the health service were included. All papers were critically appraised prior to data extraction. Results: A total of 1,000 articles were identified by the search strategy; 254 articles were screened for relevance and 21 progressed to data extraction for inclusion in the systematic review. Conclusion: Literature supporting extended scope roles exists; however, despite the earlier review calling for more robust evaluations regarding the impact on patient outcomes, cost-effectiveness, training requirements, niche identification, or sustainability, there appears to be limited research reported on the topic in the last 7 years. The evidence available suggests that extended scope practice allied health practitioners could be a cost-effective and consumer

  18. Do structured arrangements for multidisciplinary peer group supervision make a difference for allied health professional outcomes?

    Kuipers P; Pager S; Bell K; Hall F; Kendall M

    2013-01-01

    Pim Kuipers,1,2 Susan Pager,1 Karen Bell,3 Fiona Hall,4 Melissa Kendall2,5,6 1Centre for Functioning and Health Research, Metro South Health, Brisbane, Queensland, Australia; 2Centre for Community Science, School of Human Services, Griffith University, Queensland, Australia; 3Darling Downs Hospital and Health Service, Queensland, Australia; 4Allied Health Professions Office of Queensland, Health Service and Innovation Division, Queensland, Australia; 5Acquired Brain Injury Outreach Service, M...

  19. Attitudes Underlying Corneal Donation in a Group of Trainee Allied Health Professionals

    Donal McGlade; Carol McClenahan; Barbara Pierscionek

    2012-01-01

    BACKGROUND: The focus of this study was to investigate factors that may influence personal willingness to register consent to donate corneal tissue upon death using the theory of planned behaviour in a relatively ethnically homogenous group of trainee allied health professionals. The attainment of this knowledge will be of paramount importance in relation to potential interventions that are designed to change donation-related behaviour. METHODS: A questionnaire-based study was undertaken with...

  20. Public health and allied career choices for Ayush graduates in India

    Janmejaya Samal

    2013-01-01

    Introduction Until the very recent time majority of AYUSH graduates were limited to their own field of study with few exceptions in the field of public health and allied areas. The reasons could be lack of awareness, unavailability of suitable job opportunity or a sense of insecurity in a relatively new and offbeat domain of work. However more recently, there is a paradigm shift; with increase in information access, awareness about job opportunities and a great degree of professional and per...

  1. [Cultivation of Pleurotus ostreatus and allied species (Fungi: Pleurotaceae) upon semi-sterile natural media].

    Macaya-Lizano AV

    1988-11-01

    Pleurotus ostreatus (Jacq. ex Fr.) Quélet and its allies are edible mushrooms whose cultivation is successful in parts of Europe and Asia. In Costa Rica only Agaricus bisporus has been commercially cultured, but requires elaborate facilities. The use of waste material (e.g. sawdust, rice straw, sugar cane debris) and non-controlled environmental conditions suitable for easy artisanal cultivation of Pleurotus ostreatus is reported here.

  2. Corrosion Studies of 2195 Al-Li Alloy and 2219 Al Alloy with Differing Surface Treatments

    Danford, M. D.; Mendrek, M. J.

    1998-01-01

    Corrosion studies of 2195 Al-Li and 2219 Al alloys have been conducted using the scanning reference electrode technique (SRET) and the polarization resistance (PR) technique. The SRET was used to study corrosion mechanisms, while corrosion rate measurements were studied with the PR technique. Plates of Al203 blasted, soda blasted and conversion coated 2219 Al were coated with Deft primer and the corrosion rates studied with the EIS technique. Results from all of these studies are presented.

  3. Ethnobotanical Studies of Chikar and its Allied Areas of District Muzaffarabad

    Imtiaz Ahmad Saghir; Ashfaq Ahmad Awan; Syed Majid; Mir Ajab Khan; Sohail Jamil Qureshi; Sofia Bano

    2001-01-01

    During ethnobotanical investigations in Chikar and allied areas of Muzaffarabad a total of 53 plant species belonging to 48 genera of 33 families were recorded. Most of the plant species are used as medicinal plants for the ailment of various diseases while some wild plant species are used as fuelwood, timber, fruit, fodder and vegetables. Some of the most interesting and representative plants of the area are Adhatoda zeylanica which is mainly used for cough, bronchitis, stomachache and dysen...

  4. In Situ Assessment of Lattice in an Al-Li Alloy

    Beaudoin, A. J.; Obstalecki, M.; Tayon, W.; Hernquist, M.; Mudrock, R.; Kenesei, P.; Lienert, U.

    2013-01-01

    The lattice strains of individual grains are measured in an Al-Li alloy, AA 2195, using high-energy X-ray diffraction at a synchrotron source. The diffraction of individual grains in this highly textured production alloy was isolated through use of a depth-defining aperture. It is shown that hydrostatic stress, and in turn the stress triaxiality, can vary significantly from grain to grain.

  5. Unmanned Aerial Systems in Occupational Hygiene-Learning from Allied Disciplines.

    Eninger, Robert M; Johnson, Robert L

    2015-10-01

    Unmanned Aerial System (UAS) technologies are rapidly developing, lowering cost, and technology barriers for their use in numerous applications. This review and commentary summarizes relevant literature in allied fields and evaluates potential application and utility of UAS technology in the discipline of occupational hygiene. Disciplines closely related to occupational hygiene are moving to investigate potential uses--and in some cases--already employing this technology for research or commercial purposes. The literature was reviewed to formulate a cross-sectional picture of how UAS technology is being used in these closely allied disciplines which could inform or guide potential use in occupational hygiene. Discussed are UAS applications in environmental monitoring, emergency response, epidemiology, safety, and process optimization. A rapidly developing state of the art indicates that there is potential utility for this technology in occupational hygiene. Benefits may include cost savings, time savings, and averting hazardous environments via remote sensing. The occupational hygiene community can look to allied fields to garner lessons and possible applications to their own practice. PMID:26180263

  6. A systematic review of the unit costs of allied health and community services used by older people in Australia

    Farag Inez; Sherrington Cathie; Ferreira Manuela; Howard Kirsten

    2013-01-01

    Abstract Background An economic evaluation of interventions for older people requires accurate assessment of costing and consideration of both acute and long-term services. Accurate information on the unit cost of allied health and community services is not readily available in Australia however. This systematic review therefore aims to synthesise information available in the literature on the unit costs of allied health and community services that may be utilised by an older person living in...

  7. A systematic review of the unit costs of allied health and community services used by older people in Australia

    Farag, Inez; Sherrington, Cathie; Ferreira, Manuela; Howard, Kirsten

    2013-01-01

    Background An economic evaluation of interventions for older people requires accurate assessment of costing and consideration of both acute and long-term services. Accurate information on the unit cost of allied health and community services is not readily available in Australia however. This systematic review therefore aims to synthesise information available in the literature on the unit costs of allied health and community services that may be utilised by an older person living in Australi...

  8. Demographic and stroke-related factors as predictors of quality of acute stroke care provided by allied health professionals

    Luker J; Bernhardt J; Grimmer-Somers KA

    2011-01-01

    Julie A Luker1, Julie Bernhardt2,3, Karen A Grimmer-Somers11International Centre for Allied Health Evidence, University of South Australia, Adelaide, South Australia; 2School of Physiotherapy, La Trobe University, Melbourne, Victoria, Australia; 3Stroke Division, Florey Neurosciences Institute, Heidelberg Heights, Victoria, AustraliaBackground: We recently indicated that patient age on its own is not a determinant of quality of allied health care received after an acute stroke. It has not bee...

  9. Systematic review of interventions to increase the delivery of preventive care by primary care nurses and allied health clinicians

    McElwaine, Kathleen M; Freund, Megan; Campbell, Elizabeth M.; Bartlem, Kate M.; Wye, Paula M.; Wiggers, John H

    2016-01-01

    Background Primary care nurses and allied health clinicians are potential providers of opportunistic preventive care. This systematic review aimed to summarise evidence for the effectiveness of practice change interventions in increasing nurse or allied health professional provision of any of five preventive care elements (ask, assess, advise, assist, and/or arrange) for any of four behavioural risks (smoking, inadequate nutrition, alcohol overconsumption, physical inactivity) within a primar...

  10. The barriers and facilitators to routine outcome measurement by allied health professionals in practice: a systematic review

    Duncan Edward AS; Murray Jennifer

    2012-01-01

    Abstract Background Allied Health Professionals today are required, more than ever before, to demonstrate their impact. However, despite at least 20 years of expectation, many services fail to deliver routine outcome measurement in practice. This systematic review investigates what helps and hinders routine outcome measurement of allied health professionals practice. Methods A systematic review protocol was developed comprising: a defined search strategy for PsycINFO, MEDLINE and CINHAL datab...

  11. Do structured arrangements for multidisciplinary peer group supervision make a difference for allied health professional outcomes?

    Kuipers P

    2013-10-01

    Full Text Available Pim Kuipers,1,2 Susan Pager,1 Karen Bell,3 Fiona Hall,4 Melissa Kendall2,5,6 1Centre for Functioning and Health Research, Metro South Health, Brisbane, Queensland, Australia; 2Centre for Community Science, School of Human Services, Griffith University, Queensland, Australia; 3Darling Downs Hospital and Health Service, Queensland, Australia; 4Allied Health Professions Office of Queensland, Health Service and Innovation Division, Queensland, Australia; 5Acquired Brain Injury Outreach Service, Metro South Health, Brisbane, Queensland, Australia; 6Transitional Rehabilitation Programme, Metro South Health, Brisbane, Queensland, Australia Abstract: Peer group supervision, particularly in multidisciplinary formats, presents a potential means of providing professional support, and specifically clinical supervision, for allied health professionals. Debate exists regarding the extent to which the activities of these groups should be formalized. Results drawn from an evaluation of a large-scale peer group supervision initiative are described. Analysis of 192 responses from professionals involved in peer groups indicates that participants in groups that used formal documentation – which adopted the tools provided in training, and particularly those that used formal evaluation of their groups – rated their groups as having better processes and greater impact. Interestingly, multidisciplinary peer groups were rated as having similar impacts, processes, and purposes as the more homogenous single-discipline groups. It is concluded that the implementation of formal arrangements enhances the processes and outcomes of peer groups implemented for professional support and clinical supervision. Multidisciplinary membership of such groups is perceived as equally beneficial as single-discipline groups. Keywords: allied health, professional supervision, clinical supervision, professional support, multidisciplinary

  12. Age and gender as predictors of allied health quality stroke care

    Luker JA

    2011-07-01

    Full Text Available Julie A Luker1, Julie Bernhardt2, Karen A Grimmer-Somers11International Centre for Allied Health Evidence, University of South Australia Adelaide, South Australia, Australia; 2School of Physiotherapy, La Trobe University Melbourne, Victoria, Australia and Stroke Division, Florey Neurosciences Institutes Heidelberg Heights, Melbourne, Victoria, AustraliaBackground: Improvement in acute stroke care requires the identification of variables which may influence care quality. The nature and impact of demographic and stroke-related variables on care quality provided by allied health (AH professionals is unknown.Aims: Our research explores the association of age and gender on an index of acute stroke care quality provided by AH professionals.Methods: A retrospective clinical audit of 300 acute stroke patients extracted data on AH care, patients' age and gender. AH care quality was determined by the summed compliance with 20 predetermined process indicators. Our analysis explored relationships between this index of quality, age, and gender. Age was considered in different ways (as a continuous variable, and in different categories. It was correlated with care quality, using gender-specific linear and logistic regression models. Gender was then considered as a confounder in an overall model.Results: No significant association was found for any treatment of age and the index of AH care quality. There were no differences in gender-specific models, and gender did not significantly adjust the age association with care quality.Conclusion: Age and gender were not predictors of the quality of care provided to acute stroke patients by AH professionals.Keywords: acute stroke, allied health, quality of care, age, gender

  13. Effect of heat-treatment on fatigue property of Al-Li alloy

    张荻; 丁剑; 范同祥; 吕维洁; 覃继宁

    2003-01-01

    Fatigue property of Al-Li alloy after various heat treatment was investigated. The results show that the fatigue strength is enhanced with the age hardening progressing. Compared to the solution treated specimen, the fatigue limit is improved to 136% for sub-ageing treated specimen and 155% for peak-ageing treated specimen, respectively. In the meanwhile, the fatigue deformation becomes non-uniform with age hardening progressing. The fatigue cracks initiate and propagate prior from the un-uniform slip band, causing transgranular fracture or the mixed mode of transgranular fracture and intergranular fracture.

  14. Caryopsis micromorphological survey of the genus Themeda (Poaceae) and allied spathaceous genera in the Andropogoneae

    Zhang, Yu; Hu, Xiaoying; LIU, Yunxiao; Liu, Qing

    2014-01-01

    A caryopsis micromorphological survey of 15 species of the genus Themeda Forssk. (Poaceae) and 4 species of allied spathaceous genera in tribe Andropogoneae allowed the recognition of 2 types of caryopses based on the ventral face and embryo shape for the first time. One kind of caryopsis had a concave ventral face with a grooved embryo, and the other kind of caryopsis had a flat ventral face with a keel-shaped embryo. Although the ventral face and embryo shapes had limited taxonomic value at...

  15. Polyol mediated hexadecylamine capped silver allied nanobimetallic particles and their fluxional properties

    Adekoya, J. A.; Dare, E. O.; Mesubi, M. A.; Revaprasadu, N.

    2015-11-01

    The syntheses of hexadecylamine seed mediated Ag/M (M=Co, Ni, Pd and Pt) allied nanobimetallic particles were successfully carried out by the successive reduction of ligand capped metal ions with polyols, resulting in concomitant precipitation of some high index faceted hybrid Ag/M bimetal nanoparticles. The optical measurements revealed the existence of surface plasmon band and peak broadening that causes diffusion processes of the metal sols to decrease making it possible to monitor the changes spectrophotometrically. The bimetallic nanoparticles were characterized by X-ray diffraction, X-ray photoelectron spectroscopy and electron microscopy techniques which confirm the formation of alloyed clusters.

  16. Turning Time from Enemy into an Ally Using the Pomodoro Technique

    Wang, Xiaofeng; Gobbo, Federico; Lane, Michael

    Time is one of the most important factors dominating agile software development processes in distributed settings. Effective time management helps agile teams to plan and monitor the work to be performed, and create and maintain a fast yet sustainable pace. The Pomodoro Technique is one promising time management technique. Its application and adaptation in Sourcesense Milan Team surfaced various benefits, challenges and implications for distributed agile software development. Lessons learnt from the experiences of Sourcesense Milan Team can be useful for other distributed agile teams to turn time from enemy into an ally.

  17. Examining Phenomenon of the Administrative Burden in Health Care, Allied Health, and Respiratory Care.

    Heuer, Albert J; Parrott, James S; Percival, Dreina; Kacmarek, Robert M

    2016-01-01

    Documentation expectations for allied health professional appears to have changed dramatically in the past decade. The purpose of this essay is to discuss the literature related to clinician perceptions of these documentation expectations and changes in the workload attributable to such administrative duties, review the results of a recent pilot project surveying respiratory therapists' perception of documentation, and reflect upon the potential ramifications of excessive documentation. This commentary also discusses some recommendations for the future in terms of the design of documentation systems and the need for additional research to further explore this area. PMID:27262474

  18. Electronic structure and phase stability properties of Al-Li alloys

    The phase diagram of Al-Li alloys was calculated with the use of the Connolly-Williams method. In an effort to test the validity and to supplement the results of that study, equilibrium lattice constants and effective cluster interactions have been obtained using the generalized perturbation method within the first-principles multiple-scattering formalism of the Korringa-Kohn-Rostoker coherent-potential approximation. In this paper the implication of these effective interactions to the phase stability of these alloys is discussed

  19. Automated accountability of hazardous materials at AlliedSignal Inc., Kansas City Division

    The Department of Energy's (DOE) Kansas City Plant (KCP), currently operated by AlliedSignal Inc. has developed a comprehensive Hazardous Material Information System (HMIS). The purpose of this system is to provide a practical and automated method to collect, analyze and distribute hazardous material information to DOE, KCP associates, and regulatory agencies. The drivers of the HMIS are compliance with OSHA Hazard Communications, SARA reporting, pollution prevention, waste minimization, control and tracking of hazards, and emergency response. This report provides a discussion of this system

  20. Etude métallurgique du soudage par friction malaxage sur un acier à haute limite élastique destiné à la construction navale : le 80 HLES Metallurgical study of friction stir welding on a steel high yield for shipbuilding: The 80 HLES

    Allart Marion

    2013-11-01

    Full Text Available Le soudage par friction malaxage est un procédé de soudage relativement récent (début des années 90. Il est aujourd'hui utilisé couramment sur des alliages légers mais ne l'est que depuis peu sur les aciers. L'objectif de nos travaux est de chercher à caractériser la microstructure métallurgique et l'état de déformation et de contrainte après soudage par friction malaxage sur des échantillons d'aciers à haute limite élastique utilisés dans l'industrie navale. Nous chercherons à comprendre les phénomènes métallurgiques qui interviennent en cours de soudage. The friction stir welding is a welding process relatively recent (early 90s. It is now commonly used on light alloys but is only recently on steels. The objective of our work is to try to characterize the metallurgical microstructure and state of stress and strain after friction stir welding on samples of high strength steels used in the shipbuilding industry. We seek to understand the metallurgical phenomena that occur during welding.

  1. Building alliances in unlikely places: progressive allies and the Tobacco Institute's coalition strategy on cigarette excise taxes.

    Campbell, Richard B; Balbach, Edith D

    2009-07-01

    The tobacco industry often utilizes third parties to advance its policy agenda. One such utilization occurred when the industry identified organized labor and progressive groups as potential allies whose advocacy could undermine public support for excise tax increases. To attract such collaboration, the industry framed the issue as one of tax fairness, creating a labor management committee to provide distance from tobacco companies and furthering progressive allies' interests through financial and logistical support. Internal industry documents indicate that this strategic use of ideas, institutions, and interests facilitated the recruitment of leading progressive organizations as allies. By placing excise taxes within a strategic policy nexus that promotes mutual public interest goals, public health advocates may use a similar strategy in forging their own excise tax coalitions. PMID:19443832

  2. Patterns of waste generation, treatment and disposal in the chemical and allied industries in Ghana

    Osei-Wusu Achaw

    2012-09-01

    Full Text Available Environmental pollution and degradation in urban Ghana has been on the increase as a result of the nations drive towards industrialization, a generally weak regulatory regime, and a lack of capacity to manage the environment. This situation is affecting the well-being and livelihood of affected communities. As part of an effort to address the issue, a thirteen (13 item questionnaire was designed and distributed to seventy (70 companies in the chemical and allied industry to solicit and analyze data and information on the their waste management situation. Forty-seven, representing 67.1%, of the distributed questionnaires were completed and returned. The responses were analyzed using tables, percentages and bar charts. The results revealed that while 80.9% of the respondents generate waste as a result of the operation of the plants, 23.3% directly dump their waste into the environment without any prior treatment. Only one company was found that incinerate its waste, and only four (8.5% had comprehensive waste water treatment plants. The low numbers of companies treating the waste they generate prior to disposal means that the chemical and allied industry is contributing to the environmental pollution and degradation in the country.

  3. Superplastic deformation behavior of a rapidly solidified Al-Li alloy

    This study aims at investigating the superplastic behavior of a rapidly solidified Al-3Li-1Cu-0.5Mg-0.5Zr (mass%) alloy. Although rapidly solidified Al-Li alloys have the very fine grain structure desirable for improved superplasticity, unfavorable oxide morphology often prevents them from being superplastic. The results of superplastic deformation indicated that the proper thermo-mechanical treatment (TMT) of the alloy resulted in a much improved superplastic ductility, e.g. elongation of approximately 530%. In the case of testing at 520 C, optimum strain rate of forming was 4 x 10-2 s-1, which was one or two orders of magnitude higher than that of ingot cast Al-Li alloys. Such a high strain rate was thought to be quite advantageous for the practical application of superplastic deformation of the alloy. It could also be seen that the microstructure of the deformed alloy was similar to that of the as-received or the TMT treated alloy since continuous recrystallization was accomplished by subgrain growth and the growth of primary grains was prevented by fine β' (Al3Zr) particles. (orig.)

  4. The Predictive Value of Selected Extrinsic and Intrinsic Indicators of Overall Job Satisfaction in Diagnostic Radiological Technology, Radiation Therapy, and Nuclear Medicine Technology Allied Health Faculty

    Beavers, Gregory S.

    2010-01-01

    Healthcare is the largest industry in the United States and 60 percent of its 14 million workers are in allied health jobs. The need to attract and retain allied health faculty is critical to preparing a competent workforce in healthcare. This study reports the results of a survey of 259 faculty members working in diagnostic radiologic technology,…

  5. Differences between African-American and Caucasian Students on Enrollment Influences and Barriers in Kinesiology-Based Allied Health Education Programs

    Barfield, J. P.; Cobler, D. C.; Lam, Eddie T. C.; Zhang, James; Chitiyo, George

    2012-01-01

    Kinesiology departments have recently started to offer allied health education programs to attract additional students to teacher education units (9). Although allied health professions offer increased work opportunities, insufficient enrollment and training of minority students in these academic fields contribute to underrepresentation in the…

  6. Systematic review of knowledge translation strategies in the allied health professions

    Scott Shannon D

    2012-07-01

    Full Text Available Abstract Background Knowledge translation (KT aims to close the research-practice gap in order to realize and maximize the benefits of research within the practice setting. Previous studies have investigated KT strategies in nursing and medicine; however, the present study is the first systematic review of the effectiveness of a variety of KT interventions in five allied health disciplines: dietetics, occupational therapy, pharmacy, physiotherapy, and speech-language pathology. Methods A health research librarian developed and implemented search strategies in eight electronic databases (MEDLINE, CINAHL, ERIC, PASCAL, EMBASE, IPA, Scopus, CENTRAL using language (English and date restrictions (1985 to March 2010. Other relevant sources were manually searched. Two reviewers independently screened the titles and abstracts, reviewed full-text articles, performed data extraction, and performed quality assessment. Within each profession, evidence tables were created, grouping and analyzing data by research design, KT strategy, targeted behaviour, and primary outcome. The published descriptions of the KT interventions were compared to the Workgroup for Intervention Development and Evaluation Research (WIDER Recommendations to Improve the Reporting of the Content of Behaviour Change Interventions. Results A total of 2,638 articles were located and the titles and abstracts were screened. Of those, 1,172 full-text articles were reviewed and subsequently 32 studies were included in the systematic review. A variety of single (n = 15 and multiple (n = 17 KT interventions were identified, with educational meetings being the predominant KT strategy (n = 11. The majority of primary outcomes were identified as professional/process outcomes (n = 25; however, patient outcomes (n = 4, economic outcomes (n = 2, and multiple primary outcomes (n = 1 were also represented. Generally, the studies were of low methodological quality. Outcome

  7. Behaviour comparison of various flux cored wires in FCAW on austenitic stainless steel; Comparaison du comportement de differents fils fourres en soudage MIG/MAG sur acier inoxydable austenitique

    Legoeuil, N. [Stagiaire/AREVA NP Tour AREVA, 92084 - Paris La Defense cedex, (France)

    2007-07-01

    This study deals with the GMAW process evaluation for the orbital butt welding of strong thickness pipings, in order to increase the productivity of these operations (higher deposition rate than in GTAW, process currently used). The main goal of this project is to evaluate the operational feasibility of mechanized orbital welding under gas protection in narrow gap with stainless flux cored wire 308L on stainless steel 304L. The study was composed of two parts with firstly a bibliographical research which has allowed to underline this operation practice, as good with rutile flux cored wire in smooth mode as with metal cored wire in pulsed mode. In the second part, flat and in position welding tests, by unit cords and filling of narrow grooves, made possible to define preliminary welding parameters. (author) [French] Cette etude s'inscrit dans le cadre de l'evaluation du procede MIG/MAG pour le soudage orbital bout a bout de tuyauteries de forte epaisseur, afin d'augmenter la productivite de ces operations (taux de depot plus eleve qu'en TIG, procede utilise actuellement). L'objectif du projet est d'evaluer la faisabilite operatoire du soudage orbital sous protection gazeuse en chanfrein etroit en mode mecanise avec fil fourre inoxydable 308L sur acier inoxydable 304L. L'etude s'est deroulee en deux parties avec dans un premier temps une recherche bibliographique qui a permis de mettre en evidence la pratique de cette operation, aussi bien avec des fils fourres rutiles en regime lisse qu'avec des fils fourres a poudre metallique en regime pulse. Dans un second temps, des essais de soudage a plat et en position, en cordons unitaires et en remplissage de chanfreins etroits, ont permis de definir des parametres preliminaires de soudage. (auteur)

  8. The compatibility of chromium-aluminium steels with high pressure carbon dioxid at intermediate- temperatures; Compatibilite des aciers au chrome-aluminium avec le gaz carbonique sous pression aux temperatures moyennes

    Leclercq, D.; Loriers, H.; David, R.; Darras, E. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1964-07-01

    With a view to their use in the exchangers of nuclear reactors of the graphite-gas or heavy water-gas types, the behaviour of chromium-aluminium steels containing up to 7 per cent chromium and 1.5 per cent aluminium has been studied in the presence of high-pressure carbon dioxide at temperatures of between 400 and 700 deg. C. The two most interesting grades of steel (2 per cent Cr - 0.35 per cent Al - 0.35 per cent Mo and 7 per cent Cr - 1.5 per cent Al - 0.6 per cent Si) are still compatible with carbon dioxide up to 550 and 600 deg. C respectively. A hot dip aluminised coating considerably increases resistance to oxidation of the first grade and should make possible its use up to temperatures of at least 600 deg. C. (authors) [French] Dans l'optique de leur emploi dans les echangeurs de reacteurs nucleaires des filieres graphite-gaz ou eau lourde-gaz, le comportement en presence de gaz carbonique sous pression d'aciers au chrome-aluminium, contenant jusqu'a 7 pour cent de chrome et 1,5 pour cent d'aluminium a ete etudie entre 400 et 700 deg. C. Les deux nuances les plus interessantes (2 pour cent Cr - 0,35 pour cent Al - 0,35 pour cent Mo et 7 pour cent Cr - 1,5 pour cent Al - 0,6 pour cent Si) restent compatibles avec le gaz carbonique jusqu'a 550 et 600 deg. C respectivement. Un revetement d'aluminium, effectue par immersion dans un bain fondu, ameliore notablement la resistance a l'oxydation de la premiere et doit permettre son empioi jusqu'a 600 deg. C au moins. (auteurs)

  9. A systematic review of the unit costs of allied health and community services used by older people in Australia

    Farag Inez

    2013-02-01

    Full Text Available Abstract Background An economic evaluation of interventions for older people requires accurate assessment of costing and consideration of both acute and long-term services. Accurate information on the unit cost of allied health and community services is not readily available in Australia however. This systematic review therefore aims to synthesise information available in the literature on the unit costs of allied health and community services that may be utilised by an older person living in Australia. Method A comprehensive search of Medline, Embase, CINAHL, Google Scholar and Google was undertaken. Specialised economic databases were also reviewed. In addition Australian Government Department websites were inspected. The search identified the cost of specified allied health services including: physiotherapy, occupational therapy, dietetics, podiatry, counselling and home nursing. The range of community services included: personal care, meals on wheels, transport costs and domestic services. Where the information was not available, direct contact with service providers was made. Results The number of eligible studies included in the qualitative synthesis was fourty-nine. Calculated hourly rates for Australian allied health services were adjusted to be in equivalent currency and were as follows as follows: physiotherapy $157.75, occupational therapy $150.77, dietetics $163.11, psychological services $165.77, community nursing $105.76 and podiatry $129.72. Conclusions Utilisation of the Medicare Benefits Scheduled fee as a broad indicator of the costs of services, may lead to underestimation of the real costs of services and therefore to inaccuracies in economic evaluation.

  10. Attitudes on Barriers and Benefits of Distance Education among Mississippi Delta Allied Health Community College Faculty, Staff, and Students

    Mayfield-Johnson, Susan; Mohn, Richard S.; Mitra, Amal K.; Young, Rebekah; McCullers, Elizabeth M.

    2014-01-01

    Online distance education creates increased opportunities for continuing education and advanced training for allied health professionals living in underserved and geographically isolated areas. The purpose of this article was to explore attitudes on barriers and benefits of distance education technology among underrepresented minority allied…

  11. Evaluation of Engineering Properties of AL-Li Alloy X2096-T8A3 Extrusion Products

    Flom, Y.; Viens, M.; Wang, L.

    1999-01-01

    Mechanical, thermal fatigue and stress corrosion properties were determined for the two lots of Al-Li X2096-T8A3 extruded beams. Based on the test results, the beams were accepted as the construction material for fabrication of the Hubble Space Telescope new Solar Array Support Structure.

  12. On the Arrangement of the scales on the dorsal surface of the digits in Lygosoma and allied genera

    Brongersma, L.D.

    1942-01-01

    Smith (1937, pp. 215—216, fig. 1) described and figured the different types of scales of the lower surface of the toes in Lygosoma and allied genera. Although several of these types may be found within one genus, they are useful as additional characters to distinguish certain species or groups of sp

  13. Re-examining the phylogeny of clinically relevant Candida species and allied genera based on multigene analyses

    Tsui, Clement K M; Daniel, Heide-Marie; Robert, Vincent; Meyer, Wieland

    2008-01-01

    Yeasts of the artificial genus Candida include plant endophytes, insect symbionts, and opportunistic human pathogens. Phylogenies based on rRNA gene and actin sequences confirmed that the genus is not monophyletic, and the relationships among Candida species and allied teleomorph genera are not clea

  14. Becoming an Academic: The Reconstruction of Identity by Recently Appointed Lecturers in Nursing, Midwifery and the Allied Health Professions

    Smith, Caroline; Boyd, Pete

    2012-01-01

    This study investigates the workplace learning experiences of recently appointed lecturers in UK higher education in nursing, midwifery and the allied health professions. Health care practitioners, appointed to academic posts in Universities, are experts in their respective clinical fields and hold strong practitioner identities developed through…

  15. Review for librarians of evidence-based practice in nursing and the allied health professions in the United States

    Tweed, Elizabeth M.; Sauers, Eric L.; McLeod, Tamara C. Valovich; Guo, Ruiling; Trahan, Henry; Alpi, Kristine M.; Hill, Beth; Sherwill-Navarro, Pamela; Allen, Margaret (Peg); Stephenson, Priscilla L.; Hartman, Linda M.; Burnham, Judy; Fell, Dennis; Kronenfeld, Michael; Pavlick, Raymond

    2007-01-01

    Objective: This paper provides an overview of the state of evidence-based practice (EBP) in nursing and selected allied health professions and a synopsis of current trends in incorporating EBP into clinical education and practice in these fields. This overview is intended to better equip librarians with a general understanding of the fields and relevant information resources.

  16. The South Australian Allied Health Workforce survey: helping to fill the evidence gap in primary health workforce planning.

    Whitford, Deirdre; Smith, Tony; Newbury, Jonathan

    2012-01-01

    There is a lack of detailed evidence about the allied health workforce to inform proposed health care reforms. The South Australian Allied Health Workforce (SAAHW) survey collected data about the demographic characteristics, employment, education and recruitment and retention of allied health professionals in South Australia. The SAAHW questionnaire was widely distributed and 1539 responses were received. The average age of the sample was 40 years; males were significantly older than females, the latter making up 82% of respondents. Three-quarters of the sample worked in the city; 60% worked full time and the remainder in part-time, casual or locum positions. 'Work-life balance' was the most common attraction to respondents' current jobs and 'Better career prospects' the most common reason for intending to leave. Practice in a rural location was influenced by rural background and rural experience during training. A greater proportion of Generation Y (1982-2000) respondents intended to leave within 2 years than Generation X (1961-81) or Baby Boomers (1943-60). Most respondents were satisfied with their job, although some reported lack of recognition of their knowledge and skills. Systematic, robust allied health workforce data are required for integrated and sustainable primary health care delivery. PMID:23069367

  17. Mida arvate elektroonilistest testidest ja e-hindamisest? / Alli Lunter, Katrin Pihl, Enn Pärtel, Külliki Kask

    2010-01-01

    Küsimustele vastavad Viljandi maagümnaasiumi eesti keele ja kirjanduse õpetaja Alli Lunter, Audentese erakooli õpetaja, inglise keele ainesektsiooni juht Katrin Pihl, TÜ füüsika didaktika lektor Enn Pärtel, Tartu Karlova gümnaasiumi eesti keele ja kirjanduse õpetaja Külliki Kask

  18. Kuidas te lapsi kooli olete toonud? / Tõnu Mändveer, Alli Lunter, Anne Änilane .. [jt.

    2011-01-01

    Küsimusele vastasid: Loo keskkooli õpetaja Tõnu Mändveer, Viljandi maagümnaasiumi õpetaja Alli Lunter, Kodila põhikooli direktor Anne Änilane, Jaan Tõnissoni instituudi kodanikuhariduse keskuse juhataja Sulev Valdmaa ja Viljandi Carl Robert Jakobsoni gümnaasiumi õppealajuhataja Kaie Lõhmus

  19. Characterization of health-related compounds in eggplant (Solanum melongena L.) lines derived from introgression of allied species.

    Mennella, Giuseppe; Rotino, Giuseppe L; Fibiani, Marta; D'Alessandro, Antonietta; Francese, Gianluca; Toppino, Laura; Cavallanti, Federica; Acciarri, Nazzareno; Lo Scalzo, Roberto

    2010-07-14

    The purpose of the present study was to investigate the levels of either the nutraceutical and health-promoting compounds or the antioxidant properties of innovative eggplant (Solanum melongena L.) genotypes tolerant and/or resistant to fungi, derived from conventional and non-conventional breeding methodologies (i.e., sexual interspecific hybridization, interspecific protoplast electrofusion, androgenesis, and backcross cycles) in comparison with their allied and cultivated parents. Chemical measures of soluble refractometric residue (SRR), glycoalkaloids (solamargine and solasonine), chlorogenic acid (CA), delphinidin 3-rutinoside (D3R), total phenols (TP), polyphenoloxidase (PPO) activity, antiradical activity on superoxide anion and hydroxyl radical were carried out in raw fruit and peel of 57 eggplant advanced introgression lines (ILs), of three eggplant recurrent genotypes and of three allied species during 2005 and 2006. The majority of the ILs, obtained after several backcross cycles, showed positive characteristics with respect to the allied parents such as good levels of SRR, CA, D3R, TP, PPO activity, the scavenging activity against superoxide anion and hydroxyl radical and, in particular, significantly (p allied parents (i.e., resistance/tolerance to plant pathogen fungi) together with nutraceutical and antioxidant properties typical of the cultivated species. PMID:20527988

  20. The Statewide Conference of the Florida Allied Health Articulation Project (Orlando, Florida, June 21, 1989). Proceedings and Findings.

    Tallahassee Community Coll., FL.

    This document contains the proceedings of a conference on articulation in the allied health care field in Florida. The following presentations are included: "Welcome and Program Overview" (Laurey Stryker); "Health Care Challenges and Choices: Alternate Pathways to the 21st Century" (Robert E. Kinsinger); "Findings and Recommendations of the Allied…

  1. Strategic funding priorities in the pharmaceutical sciences allied to Quality by Design (QbD) and Process Analytical Technology (PAT)

    Aksu, Buket; De Beer, Thomas; Folestad, Staffan;

    2012-01-01

    position paper, the EUFEPS QbD and PAT Sciences network make recommendations that European industry, academia and health agencies focus attention on delivering step changes in science and technology in a number of key themes. These subject areas, all underpinned by the sciences allied to QbD and PAT...

  2. Developing eLearning Technologies to Implement Competency Based Medical Education: Experiences from Muhimbili University of Health and Allied Sciences

    Nagunwa, Thomas; Lwoga, Edda

    2012-01-01

    This paper provides the practical experience of developing an eLearning technology as a tool to implement Competency-based Medical Education (CBME) in Tanzania medical universities, with a specific focus on Muhimbili University of Health and Allied Sciences. The paper provides a background to eLearning and the early attempt to adopt it in 2006 at…

  3. The use of videoconferencing to enhance interprofessional clinical education for allied health students.

    Britt, Kerry Lee; Hewish, Sara; Rodda, Jill; Eldridge, Bev

    2012-07-01

    The Health-e-Learning project investigated the use of videoconferencing to deliver interprofessional clinical education to allied health students. Via a broadband link, students observed DVD footage of a clinical session then participated in discussion with the clinicians at the Royal Children's Hospital (RCH), Melbourne. The videoconference sessions were evaluated with respect to session content, the effectiveness of videoconferencing in providing interprofessional education (IPE) and the satisfaction with this as a supplement to facility-based placements. During the two semesters of the project, 28 videoconference sessions were conducted and 724 participants were surveyed. Student responses were positive with 84% indicating that these videoconferences increased their understanding of interprofessional practice (IPP) and 95% agreeing that the sessions were an effective learning tool. The results of this study support the use of videoconferencing to provide interprofessional clinical education. PMID:22458640

  4. The Mechanisms of Corporate Meetings under the Companies and Allied Matters Act (CAMA 1990

    Aderibigbe, O. I.

    2011-04-01

    Full Text Available The purpose of this study was to assess the mechanism of corporate meetings under the Companies and Allied Matters Act (CAMA 1990. This review revealed two major types of meetings, public meetings convened by individuals or bodies to which there is an open invitation extended to any member of the public, and meetings of bodies of which the members are limited and known. However, the study was preoccupied with the second category. Therefore, there is the need for the various Legislatures of countries to work towards enacting effective and efficient company legislation to that effect. It is recommended among others that in Nigeria that the fine of N50 for every day of default to hold a statutory meeting should be reviewed to be punitive.

  5. Simultaneous SAS and 100 experiments on phase decomposition and reversion in Al-Li binary alloys

    Phase decomposition and reversion processes in Al-Li binary alloys have been studied by synchrotron-radiation small-angle/100 scattering experiments. The microstructure and its evolution obtained from small-angle scattering (SAS) and 100 profiles during phase decomposition and reversion are discussed. For the coarsening and reversion processes where a well defined interface between the δ' precipitates and the matrix can be expected, the information obtained from the SAS and 100 profiles was essentially the same. On the other hand, the structural information they convey can be different in the early stage of phase decomposition. The interpretation of the SAS and 100 intensities by means of an extension of the two-phase model has been examined. (orig.)

  6. Strength and microstructure of 2091 Al-Li alloy TIG welded joint

    2000-01-01

    The microstructure and tensile properties of TIG welding joints of 2091 Al-Li alloy were investigated both in as-welded and different postweld heat treatment condition. The results show that solution strengthening played an important role in the as-welded condition, though the precipitation strengthening δ' phase formed already in the as-welded weld metal, but its effect was not apparent due to the lower volume fraction of δ' phase. So the strength coefficient (φ) of the welded joint/base metal was 64%. After artificially aging heat treatment, the precipitation strengthening effect increased much due to the formation of more δ' phase and s' phase. Its φ value was increased up to 89%. The highest strength of the welded joints was obtained after solid solution and then artificially aged heat treatment. Due to the proper size of precipitation strengthening phases and their well distribution, the φ value was increased up to 98%.

  7. Does journal club membership improve research evidence uptake in different allied health disciplines: a pre-post study

    Lizarondo Lucylynn M

    2012-10-01

    Full Text Available Abstract Background Although allied health is considered to be one 'unit' of healthcare providers, it comprises a range of disciplines which have different training and ways of thinking, and different tasks and methods of patient care. Very few empirical studies on evidence-based practice (EBP have directly compared allied health professionals. The objective of this study was to examine the impact of a structured model of journal club (JC, known as iCAHE (International Centre for Allied Health Evidence JC, on the EBP knowledge, skills and behaviour of the different allied health disciplines. Methods A pilot, pre-post study design using maximum variation sampling was undertaken. Recruitment was conducted in groups and practitioners such as physiotherapists, occupational therapists, speech pathologists, social workers, psychologists, nutritionists/dieticians and podiatrists were invited to participate. All participating groups received the iCAHE JC for six months. Quantitative data using the Adapted Fresno Test (McCluskey & Bishop and Evidence-based Practice Questionnaire (Upton & Upton were collected prior to the implementation of the JC, with follow-up measurements six months later. Mean percentage change and confidence intervals were calculated to compare baseline and post JC scores for all outcome measures. Results The results of this study demonstrate variability in EBP outcomes across disciplines after receiving the iCAHE JC. Only physiotherapists showed statistically significant improvements in all outcomes; speech pathologists and occupational therapists demonstrated a statistically significant increase in knowledge but not for attitude and evidence uptake; social workers and dieticians/nutritionists showed statistically significant positive changes in their knowledge, and evidence uptake but not for attitude. Conclusions There is evidence to suggest that a JC such as the iCAHE model is an effective method for improving the EBP knowledge

  8. Impact and feasibility of the Allied Health Professional Enhancement Program placements – experiences from rural and remote Queensland

    Martin P

    2016-02-01

    Full Text Available Priya Martin,1,2 Saravana Kumar,2 Melinda Stone,1 LuJuana Abernathy,1 Vanessa Burge,1 Lucylynn Lizarondo3 1Allied Health Education and Training, Cunningham Centre, Darling Downs Hospital and Health Service, Toowoomba, QLD, 2International Centre for Allied Health Evidence (iCAHE, School of Health Sciences, University of South Australia, 3Joanna Briggs Institute, University of Adelaide, Adelaide, SA, AustraliaBackground: Allied health professionals practicing in rural and remote areas are often faced with barriers that prevent them from accessing professional development opportunities. In order to address this barrier, a tailored professional development program was developed and implemented by the Cunningham Centre in Queensland, Australia. The purpose of this study was to investigate the benefits of the program to participants and their work units.Methods: This study used a concurrent mixed methods longitudinal design to investigate the medium- to long-term benefits of one Allied Health Professional Enhancement Program placement. Surveys and individual interviews provided data at 2 weeks and at 6 months post-placement. The study participants included the placement participant (a physiotherapist, their line manager, clinical supervisor, and the placement facilitator.Results: Results demonstrated that the placement resulted in various reported benefits to the placement participant, as well as to service delivery in their home location. Benefits of the placement reported by the participant included increased confidence, improved knowledge and skills, increased access to professional networks, and validation of practice. Benefits to service delivery reported included improved efficiencies, improved patient outcomes, and positive impact on other team members.Discussion: This study found that the Allied Health Professional Enhancement Program placement investigated was beneficial to the participant and to service delivery. In addition, the benefits

  9. Economic efficiency in fish farming: hope for agro-allied industries in Niagara

    Kareem, R. O.; Dipeolu, A. O.; Aromolaran, A. B.; Williams, S. B.

    2008-02-01

    The challenge to increase the efficiency in food production level in Nigeria appears to be more urgent now than it has ever been in the history of the country. This is in view of the rapidly increasing population, the imminent decline in international economic and food aid and the need to conserve foreign exchange earnings through the production of raw materials to feed the growing industrial sector calls for urgent attention. The study was carried out in Ogun State. The descriptive statistics was used to determine the socio-economic characteristics of the respondents. The stochastic frontiers production analysis was applied to estimate the technical, allocative efficiency and economic efficiency among the fish farmers in the state. The results of economic efficiency revealed that fish farming is economically efficient with a range of between 55% and 84% efficiency level suggesting a favourable hope for the agro-allied industry such as poultry and cottage industries etc in the state. The result of hypothesis of inefficiency sources models showed that years of experience of fish farmers is significant at 1% probability level indicating the factor contributing to the fish farming experience in the state. Thus, the efficiency is due to the fact that farmers are experienced and fairly educated. On the basis of findings, policy is suggested to be directed towards the encouragement of entrepreneurs in fish farming in the state by providing enabling environment like credit facilities, public enlightenment programme and provision of social amenities like feeder roads, pipe-born water etc and given the fact that an increase in the level of formal education variable leads to less inefficiency, government policy should be focused on adopting the best technology (e.g. fast growing species and equipment) so as to improve the level of efficiency and investment which shall eventually lead to growth in output of fish farming and a lead to the establishment of agro-allied

  10. A study of leadership behaviors among chairpersons in allied health programs.

    Firestone, Deborah T

    2010-01-01

    This study was designed to investigate leadership behaviors among chairpersons in allied health programs, based on their perceptions and the perceptions of faculty. Transformational, transactional, and laissez-faire leadership behaviors, as well as organizational outcomes of effectiveness, extra effort, and satisfaction, were measured using the Multifactor Leadership Questionnaire (MLQ Form 5X-Short). A form developed by the researcher was used to gather demographic and program information. One hundred thirty-eight chairpersons and 327 faculty participated in the study. Major findings support the view that chairpersons primarily demonstrate leadership behaviors associated with transformational leadership factors and the contingent reward factor of transactional leadership. Statistically significant differences were found between the mean values of the self-perceptions of chairpersons and faculty for the transformational leadership factors of idealized influence (behavior), inspirational motivation, intellectual stimulation, individual consideration, and organizational outcomes of effectiveness and satisfaction. There was a statistically significant positive correlation, based on the self-perceptions of chairpersons and faculty, of the five transformational leadership factors with the three organizational outcomes and the transactional leadership factor of contingent reward with the organizational outcomes of effectiveness and extra effort. There was a statistically significant negative correlation, based on the perception of faculty, with the management-by-exception (passive) and laissez-faire leadership factors, and the organizational outcomes of effectiveness, extra effort and satisfaction. Transformational leadership has been identified as an effective strategy to adapt to a rapidly changing environment. Further development of the transformational leadership behaviors of chairpersons should be considered a priority for the allied health professions. PMID

  11. Effects of Annealing Process on the Formability of Friction Stir Welded Al-Li Alloy 2195 Plates

    Chen, Po-Shou; Bradford, Vann; Russell, Carolyn

    2011-01-01

    Large rocket cryogenic tank domes have typically been fabricated using Al-Cu based alloys like Al-Cu alloy 2219. The use of aluminum-lithium based alloys for rocket fuel tank domes can reduce weight because aluminum-lithium alloys have lower density and higher strength than Al-Cu alloy 2219. However, Al-Li alloys have rarely been used to fabricate rocket fuel tank domes because of the inherent low formability characteristic that make them susceptible to cracking during the forming operations. The ability to form metal by stretch forming or spin forming without excessive thinning or necking depends on the strain hardening exponent "n". The stain hardening exponent is a measure of how rapidly a metal becomes stronger and harder. A high strain hardening exponent is beneficial to a material's ability to uniformly distribute the imposed strain. Marshall Space Flight Center has developed a novel annealing process that can achieve a work hardening exponent on the order of 0.27 to 0.29, which is approximately 50% higher than what is typically obtained for Al-Li alloys using the conventional method. The strain hardening exponent of the Al-Li alloy plates or blanks heat treated using the conventional method is typically on the order of 0.17 to 0.19. The effects of this novel annealing process on the formability of friction stir welded Al-Li alloy blanks are being studied at Marshall Space Flight Center. The formability ratings will be generated using the strain hardening exponent, strain rate sensitivity and forming range. The effects of forming temperature on the formability will also be studied. The objective of this work is to study the deformation behavior of the friction stir welded Al-Li alloy 2195 blank and determine the formability enhancement by the new annealing process.

  12. Contribution of archaeological analogs to the estimation of average corrosion rates and long term corrosion mechanisms of low carbon steel in soil; Apport des analogues archeologiques a l'estimation des vitesses moyennes et a l'etude des mecanismes de corrosion a tres long terme des aciers non allies dans les sols

    Neff, D

    2003-11-15

    In the context of the French nuclear waste storage, a multi-barriers disposal is envisaged. Wastes could be put in metallic overpacks disposed in a clay soil. As these overpacks could be made of low carbon steel, it is important to understand the corrosion behaviour of this material in soil during period of several centuries. Indeed, it is necessary to consolidate the empirical data by a phenomenological approach. This includes laboratory experiments and modelling of the phenomenon which have to be validated and completed by the study of archaeological artefacts. This was the aim of this PhD-work. To this purpose, an analytical protocol has been elaborated: about forty archaeological artefacts coming from five dated sites (2. to 16. centuries) have been studied on cross section in order to observe on the same sample all the constituents of the system: metallic substrate/corrosion products/environment. The corrosion products are divided into two zones: the Dense Product Layer (DPL) in contact with the metal, and the Transformed Medium (TM) which are the corrosion products formed around soil minerals (quartz grains). The metallic substrate has been studied by the classical methods of materials science (optical and scanning electron microscope, energy and wavelength dispersive spectroscopies). It has been verified that despite their heterogeneity of structure and composition, they are all hypo-eutectoids steels that can contain phosphorous until 0.5 wt%. The corrosion products have been analysed by local structural analytical methods as micro-diffraction under synchrotron radiation ({mu}XRD) and Raman micro-spectroscopy. These two complementary techniques and also the elemental composition analysis conducted to the characterisation of the corrosion forms. On the majority of the samples coming from four sites, the DPL are constituted by goethite including marbles of magnetite/maghemite. On the artefacts from the fifth site, a particular corrosion form has been identified. This corrosion form, constituted among others by a siderite layer is due to a particular environment: waterlogged soil containing wood. In the whole, analyses conducted in the TM show that it is composed of goethite badly crystallized in comparison with those of the DPL. Moreover, in this zone, the average elemental iron amount decreases progressively from the metal to the soil in which it stabilizes. In order to know the behaviour of the identified phases in soil water, some thermodynamic data have been involved to calculate their solubility in function of pH, potential and various water composition. The first conclusion concerns the influence of the composition and the structure of the material which is not important for the corrosion behaviour. From the results, some hypothesis have been formulated on the long term corrosion mechanisms of hypo-eutectoids steels in the considered environment. The role of the cracks formed in the DPL during the burial was evidenced. Moreover, these corrosion products undertake a dissolution in the soil water and a reprecipitation, explaining the progressive decrease of the iron amount in the TM. Lastly, some average corrosion rates have been measured with the help of the analytical and thermodynamic results: they do not exceed 4 {mu}m/year. (author)

  13. Retention of allied health professionals in rural New South Wales: a thematic analysis of focus group discussions

    Keane Sheila

    2012-06-01

    Full Text Available Abstract Background Uneven distribution of the medical workforce is globally recognised, with widespread rural health workforce shortages. There has been substantial research on factors affecting recruitment and retention of rural doctors, but little has been done to establish the motives and conditions that encourage allied health professionals to practice rurally. This study aims to identify aspects of recruitment and retention of rural allied health professionals using qualitative methodology. Methods Six focus groups were conducted across rural NSW and analysed thematically using a grounded theory approach. The thirty allied health professionals participating in the focus groups were purposively sampled to represent a range of geographic locations, allied health professions, gender, age, and public or private work sectors. Results Five major themes emerged: personal factors; workload and type of work; continuing professional development (CPD; the impact of management; and career progression. ‘Pull factors’ favouring rural practice included: attraction to rural lifestyle; married or having family in the area; low cost of living; rural origin; personal engagement in the community; advanced work roles; a broad variety of challenging clinical work; and making a difference. ‘Push factors’ discouraging rural practice included: lack of employment opportunities for spouses; perceived inadequate quality of secondary schools; age related issues (retirement, desire for younger peer social interaction, and intention to travel; limited opportunity for career advancement; unmanageable workloads; and inadequate access to CPD. Having competent clinical managers mitigated the general frustration with health service management related to inappropriate service models and insufficient or inequitably distributed resources. Failure to fill vacant positions was of particular concern and frustration with the lack of CPD access was strongly represented by

  14. Modélisation numérique d'un procédé de soudage hybride arc / laser en approche level set : application au soudage multi-passes de tôles d'acier de forte épaisseur

    Desmaison, Olivier

    2013-01-01

    Le soudage hybride arc / laser représente une solution adéquate à l'assemblage de tôles d'acier de forte épaisseur. La présence d'une source laser en amont de la torche MIG permet d'accroître la productivité du procédé tout en assurant une excellente qualité de la soudure. Cependant la phénoménologie complexe de ce procédé multiphysique n'est pas encore totalement maîtrisée, ce qui motive le développement d'outils de simulation numérique. La présente étude s'est déroulée dans le cadre d'un pr...

  15. A binary Al/Li alloy as a new material for the realization of high-intensity pulsed photocathodes

    Septier, A.; Sabary, F.; Dudek, J. C.; Bergeret, H.; Leblond, B.

    1991-07-01

    We propose a new material for the fabrication of high-current photocathodes: a binary Al/Li alloy acting as a lithium dispenser cathode. This material would have the great advantage to allow regeneration of the Li layer after poisoning or air exposure, by a simple heating process. In a first experiment, we have measured the photoemission energy threshold, WΦ, of a piece of Al/Li alloy and the quantum yield, Y, as a function of the photon energy. After a heating process (340°C for 12 h) we obtained WΦ = 2 eV and Y = 6 × 10 -4 for 4.6 eV photon energy. In a second experiment another sample was illuminated with a 40 ps frequency-tripled YAG laser. After two heating processes, we obtained electron bunches containing 1 nC with an incident laser energy of 100 μJ per pulse.

  16. Taxonomic studies of Phlebotomus sergenti(parrot)(dip-tera:psychodidae)and its evolutionary relationship with its closest allies

    Juma Khan Kakarsulemankhel

    2008-01-01

    In the survey,the work was done to develop taxonomic record of sand fly Phlebotomus (paaphlebotomus)ser-genti (Parrot)collected for the first time from new epidemic localities of cutaneous leishmaniasis in Dera Ghazi Khan (Pakistan).In view of the published reports about the detection of Leishmania major,the causative a-gent of cutaneous leishmaniasis from this species in many countries,the correct identification of this species becomes of significant value in the study of epidemiology of leishmaniasis.Therefore,in order to facilitate zool-ogists and medical researchers in its correct identification,taxonomic characters of P.sergenti (parrot)is studied in details with special reference to its mouth parts,male and female genitalia.A key is also given to P. sergentii (parrot)and its closest allies.In this light its relationships with its closest allies is also briefly dis-cussed.

  17. Development and preliminary validation of a leadership competency instrument for existing and emerging allied health professional leaders

    Ang, Hui-Gek; Koh, Jeremy Meng-Yeow; Lee, Jeffrey; Pua, Yong-Hao

    2016-01-01

    Background No instruments, to our knowledge, exist to assess leadership competency in existing and emerging allied health professional (AHP) leaders. This paper describes the development and preliminary exploration of the psychometric properties of a leadership competency instrument for existing and emerging AHP leaders and examines (i) its factor structure, (ii) its convergent validity with the Leadership Practices Inventory (LPI), and (iii) its discriminative validity in AHPs with different...

  18. The New South Wales Allied Health Workplace Learning Study: barriers and enablers to learning in the workplace

    Lloyd, Bradley; Pfeiffer, Daniella; Dominish, Jacqueline; Heading, Gaynor; Schmidt, David; McCluskey, Annie

    2014-01-01

    Background Workplace learning refers to continuing professional development that is stimulated by and occurs through participation in workplace activities. Workplace learning is essential for staff development and high quality clinical care. The purpose of this study was to explore the barriers to and enablers of workplace learning for allied health professionals within NSW Health. Methods A qualitative study was conducted with a purposively selected maximum variation sample (n = 46) includin...

  19. Nigella sativa Fixed and Essential Oil Supplementation Modulates Hyperglycemia and Allied Complications in Streptozotocin-Induced Diabetes Mellitus

    2014-01-01

    In the recent era, diabetes mellitus has emerged as one of the significant threats to public health and this situation demands the attention of the researchers and allied stakeholders. Dietary regimens using functional and nutraceutical foods are gaining wide range of acceptance and some traditional medicinal plants are of considerable importance. The main objective of this instant study was to explore the antidiabetic potential of Nigella sativa fixed oil (NSFO) and essential oil (NSEO). Thr...

  20. The barriers and facilitators to routine outcome measurement by allied health professionals in practice: a systematic review

    Duncan Edward AS

    2012-05-01

    Full Text Available Abstract Background Allied Health Professionals today are required, more than ever before, to demonstrate their impact. However, despite at least 20 years of expectation, many services fail to deliver routine outcome measurement in practice. This systematic review investigates what helps and hinders routine outcome measurement of allied health professionals practice. Methods A systematic review protocol was developed comprising: a defined search strategy for PsycINFO, MEDLINE and CINHAL databases and inclusion criteria and systematic procedures for data extraction and quality appraisal. Studies were included if they were published in English and investigated facilitators and/or barriers to routine outcome measurement by allied health professionals. No restrictions were placed on publication type, design, country, or year of publication. Reference lists of included publications were searched to identify additional papers. Descriptive methods were used to synthesise the findings. Results 960 papers were retrieved; 15 met the inclusion criteria. Professional groups represented were Physiotherapy, Occupational Therapy, and Speech and Language Therapy. The included literature varied in quality and design. Facilitators and barriers to routine outcome measurement exist at individual, managerial and organisational levels. Key factors affecting professionals’ use of routine outcome measurement include: professionals’ level of knowledge and confidence about using outcome measures, and the degree of organisational and peer-support professionals received with a view to promoting their work in practice. Conclusions Whilst the importance of routinely measuring outcomes within the allied health professions is well recognised, it has largely failed to be delivered in practice. Factors that influence clinicians’ ability and desire to undertake routine outcome measurement are bi-directional: they can act as either facilitators or barriers. Routine outcome

  1. Upstream migration and reproductive patterns of a population of allis shad in a small river (L'Aulne, Brittany, France)

    Acolas, M; Veron, V; Jourdan, H.; Begout, Marie-Laure; Sabatie, M; BAGLINIERE J. L.

    2006-01-01

    The characteristics and activity of adult allis shad [Alosa alosa (L.)] were analysed during the last part of their upstream migration in the L'Aulne, a small river in Brittany, and during reproduction on a unique spawning ground downstream of an insurmountable dam. The age of the spawners ranged front three to seven years, females being larger and older than males. Population-level migration and reproduction were studied by counting the number of migrating fish, by estimating the sex ratio, ...

  2. Influence of Electric Field on Mechanical Properties of Al-Li Alloy Containing Cerium and Electronic Mechanism

    刘兵; 陈铮; 王永欣; 王西宁

    2001-01-01

    The effect of electric field on the mechanical properties and microstructure of Al-Li alloy containing Ce was investigated, and mechanism was discussed. The experimental results show that the ductility of the alloy is enhanced by the electric field. The fracture features are changed and the precipitates are dispersed under the effect of the electric field. The mechanism discussion reveals that the effects of the electric field on the alloy are due to the change of the electron density in the alloy.

  3. The place and barriers of evidence based practice: knowledge and perceptions of medical, nursing and allied health practitioners in malaysia

    Lee Ming; Teng Cheong; Lai Nai

    2010-01-01

    Abstract Background Despite a recent increase in activities to promote evidence-based practice (EBP), it was unclear how Malaysian hospital practitioners received this new approach in medicine. This study examines their confidence and perceptions on EBP. Findings We conducted cross-sectional surveys using a self-administered questionnaire during two EBP training courses in two Malaysian hospitals in January and June 2007. Our subjects (n = 144) were doctors and nursing and allied health staff...

  4. Use of Social Media in Facilitating Health Care Research Among Nursing and Allied Health Undergraduates in Sri Lanka.

    Silva, S N

    2016-01-01

    A mentoring program was designed to promote conduction, completion and dissemination of undergraduate research among Nursing and Allied Health students in Sri Lanka. Several social media platforms were used; mainly the Facebook, YouTube and Google Hangouts. Knowledge sharing, interaction and collaboration were promoted. Student motivation was also done. Research presentation skills and applying for conferences was also facilitated. Over 90% of the participated 262 students completed a research project and close to 50% presented them both locally and internationally. PMID:27332276

  5. Graduate School of Nuclear and Allied Sciences College of Basic And Applied Sciences, University of Ghana - Atomic, Annual Report-2014

    The School of Nuclear and Allied Sciences 2014 annual report provides an overview of activities undertaken during the year. It also acknowlegdes the contributions of various departments, namely, Department of Medical Physics, Department of Nuclear Agriculture and Radiation Processing, Department of Nuclear Engineering, Department of Nuclear Sciences and Applications, Department of Nuclear Safety and Security and the Office of International Programmes. Also presented are titles of student research projects and publications of staff.

  6. Public/private sector cooperation to promote industrial energy efficiency: Allied partners and the US Department of Energy

    McKane, Aimee; Cockrill, Chris; Tutterow, Vestal; Radspieler, Anthony

    2003-01-01

    Since 1996, the US Department of Energy's Office of Industrial Technologies (USDOE) has been involved in a unique voluntary collaboration with industry called the Allied Partner program. Initially developed under the Motor Challenge program, the partnership concept continues as a central element of USDOE's BestPractices, which in 2001 integrated all of USDOE's near-term industrial program offerings including those in motors, compressed air, pump, fan, process heating and steam systems. ...

  7. Using a Team Structure for Student-Assisted Facilitation of Laboratories in an Introductory Allied Health Microbiology Course †

    David Jesse Sanchez; Daniel Miranda Jr.

    2012-01-01

    As many instructors have noted, it is challenging to lead a successful microbiology laboratory, especially for students without sufficient prerequisite training such as in pre-allied health/nursing classes. In the community college setting, this is compounded by the lack of adequate resources, especially teaching assistants or others, to help individual students during a laboratory experience. In addition, there is much transition in the student population of the college so asking stud...

  8. Female Genital Mutilation in Kenya: are young men allies in social change programmes?

    Brown, Eleanor; Mwangi-Powell, Faith; Jerotich, Miriam; le May, Victoria

    2016-05-01

    The Girl Summit held in 2014 aimed to mobilise greater effort to end Female Genital Mutilation (FGM) within a generation, building on a global movement which viewed the practice as a severe form of violence against women and girls and a violation of their rights. The UN, among others, endorse "comprehensive" strategies to end FGM, including legalistic measures, social protection and social communications. FGM is a sensitive issue and difficult to research, and rapid ethnographic methods can use existing relations of trust within social networks to explore attitudes towards predominant social norms which posit FGM as a social necessity. This study used Participatory Ethnographic Evaluation Research (PEER) to understand young men's (18-25 years) perceptions of FGM, demand for FGM among future spouses, and perceptions of efforts to end FGM in a small town in West Pokot, Kenya, where FGM is reported to be high (between 85% to 96%). Twelve PEER researchers were recruited, who conducted two interviews with their friends, generating a total of 72 narrative interviews. The majority of young men who viewed themselves as having a "modern" outlook and with aspirations to marry "educated" women were more likely not to support FGM. Our findings show that young men viewed themselves as valuable allies in ending FGM, but that voicing their opposition to the practice was often difficult. More efforts are needed by multi-stakeholders - campaigners, government and local leaders - to create an enabling environment to voice that opposition. PMID:27578345

  9. Achievements and challenges on policies for allied health professionals who use telehealth in the Canadian Arctic.

    Hailey, D; Foerster, V; Nakagawa, B; Wapshall, T M; Murtagh, J A; Smitten, J; Steblecki, J A; Wong, G

    2005-01-01

    We formulated policies and procedures for allied health professionals (AHPs) who provide services using telehealth in Nunavut, Canada's newest Arctic territory. These are a supplement to the clinical policies and procedures already established for Nunavut physicians and nurses. The services were in the areas of audiology, dietetics/nutrition, midwifery, occupational therapy, ophthalmic services, pharmacy, physiotherapy, psychology, respiratory therapy, social work and speech therapy. Documents specific to each of the services were developed, drawing on information from Government of Nunavut data, Nunavut healthcare providers and links made through the Internet. Topics included the scope and limitations of telehealth services, staff responsibilities, training and reporting, professional standards and cultural considerations. We also considered generic policies covering common issues such as jurisdiction, licensing and liability. The policies and procedures for AHPs will enhance and expand the successes already achieved with telehealth in Nunavut. The challenges are to balance the preferred approaches to service provision with the realities of health care and communications in an Arctic setting. PMID:16375792

  10. Did the Allies Know in 1942 About Nazi Germany's Poor Prospects for an Atomic Bomb?

    Lustig, Harry

    2008-04-01

    According to official accounts, the U.S. knew nothing about Nazi Germany's efforts to get an atomic bomb until the end of the World War II, but had feared the worst. As it turned out, the Germans had made little progress. But did someone in the Allied camp know in 1942? In his 1986 book, The Griffin, Arnold Kramish relates how Paul Rosbaud, a spy for MI6, the British secret intelligence service, kept his handlers informed during the War about the German atomic project and reported the decision to give up on a bomb. Kramish's revelations are, understandably, thinly documented and Rosbaud's name can hardly be found independenly anywhere else. But as Samuel Goudsmit's papers in the Bohr Library show, he knew and communicated with Rosbaud from August 1945 on. In 1986, 15 letters exchanged by Goudsmit and Rosbaud were removed by the Government from the Library and eventually placed in the National Archives under classification review. Renewed interest in the Rosbaud story was engendered last year when his family sued MI6 in an English court for the release of the Rosbaud file. So far the spy agency has refused to reveal even that there is such a file. Discovering authoritatively what Rosbaud told the British and what they did with the information is clearly of historical interest.

  11. Leadership in athletic training: implications for practice and education in allied health care.

    Kutz, Matthew R

    2010-01-01

    Leadership behaviors are an important aspect of athletic training and are needed within all allied health care disciples. A two-phase, exploratory, non-experimental research study using a Delphi technique and a randomly selected sample of athletic trainers (n = 161) was conducted to determine leadership competencies perceived to be important for athletic training practice and education. The Delphi technique (phase one) resulted in the Leadership Development in Athletic Training instrument (LDAT). In the national survey (phase two), respondents used the LDAT to rate the importance of leadership competencies for athletic training practice and for athletic training education. Coefficient alphas ranged from α = 0.83 to 0.97 and provided satisfactory estimates of internal consistency. Concurrent, construct, and convergent validity were established. Forty-nine leadership competencies were rated important for practice and 48 for education (M = 1.5, p ≤ 0.001). Exploratory factor analysis revealed that leadership competencies were organized by four constructs (with six emphases): 1) personality characteristics, 2) diagnosing context and people skills, 3) communication and initiative, and 4) strategic thinking. Repeated measures ANOVA with Sidak post-hoc adjustments indicated each leadership construct significantly increased in importance as the level of the ATEP progressed. PMID:21184023

  12. COMPARATIVE STUDY OF POLLEN AND PISTIL IN CROCUS SATIVUS L. (IRIDACEAE AND ALLIED SPECIES

    P. LAURETTI

    2000-01-01

    Full Text Available Crocus sativus L. is mainly known for the production of the drug saffron. Because of its sterility, it is propagated vegetatively by means of corms. To gain information on the reproductive biology of saffron and allied species, a comparative study on pollen and pistil of Crocus sativus L., C. cartwrightianus Herb., C. thomasii Ten. and C. hadriaticus Herb. was carried out. Pollen and pistils gathered at anthesis were examined by light (LM and scanning electron microscopy (SEM. Pollen shape and size, anomalous pollen grain percentage, pollen viability, pollen germination in vitro and on self-, and cross-pollinated stigmas were examined. Pistils at different developmental stages were examined by light microscopy. C. hadriaticus had the smallest pollen; C. sativus showed a higher percentage of anomalous and aborted grains and a lower percentage of viable grains. Pollen germination in vitro as well as on differently pollinated stigmas was lowest in C. sativus. Pistil organization was similar in all the species, but ovule number and integuments varied. Embryo sacs mature early, and female gametophyte development is regular for some days after flower anthesis. Capsules with seeds were obtained from all diploid species as well as in saffron after free- and cross-pollination. Results confirm that sterility in C. sativus is mainly confined to pollen.

  13. Law and Justice on TV. The Wire vs. CSI and Ally McBeal

    Gianluigi Rossini

    2012-04-01

    Full Text Available The aim of this paper is to analyse the ways in which law is represented in the celebrated TV series The Wire, broadcasted in United States between 2002 and 2008. The analysis focuses particularly on the thematization of the relationship between the concept of law and that of justice, that is between 'positive law' and 'natural law'. This theme is pursued in the context of American television series of great success such as CSI: Crime Scene Investigation (CBS, 2000- and Ally McBeal (Fox, 1997-2002 . The comparison highlights the way in which in The Wire the terms of the problem are completely eroded through the representation of a sort of 'disappearance of justice'. In this series the natural law becomes insignificant both because it is no more the point of reference of the actions activated by the institutions, and because an informed, in-depth and not prejudicial gaze on the social reality of the contemporary metropolis brings into question the very idea of a justice absolute and distanced from the contingent circumstances.

  14. Distribution species abundance and nesting site use of Atlantic coast colonies of herons and their allies

    Custer, T.W.; Osborn, R.G.; Stout, W.F.

    1980-01-01

    In 1975 and 1976, 8 teams of investigators located 262 colonies of nesting herons and their allies along the Atlantic coast from Florida to Maine [USA]. Fourteen species [Ajaia ajaja, Plegadis falcinellus, Nycticorax nycticorax, Ardea herodias, Eudocimus albus, Egretta thula, Hydranassa tricolor, Bubulcus ibis, Casmerodius albus, Butorides striatus, Florida caerulea, Dichromanassa rufescens, Nyctanassa violacea and Mycteria americana] were found in Florida, numbers decreasing to 7 in Maine. Colonies censused in the extreme south and north of the study area were lower in number of species and number of adults than those in the intermediate area. More than 90% of the colony sites surveyed in 1975 were active in 1976. The total number of nesting adults per colony, number of species per colony and number of nesting adults of each species per colony in 1976 were significantly correlated with their respective values for 1975. Abandoned and new colonies may be satellites of nearby reused colonies; they had fewer individuals and species than reused colonies and were closer to reused colonies than reused colonies were to each other. [This study was part of an attempt to examine colonially nesting herons as biological indicators of environmental quality.

  15. Evolution of grain structure in AA2195 Al-Li alloy plate during recrystallization

    DU Yu-xuan; ZHANG Xin-ming; YE Ling-ying; LIU Sheng-dan

    2006-01-01

    The evolution of the grain structures in AA2195 Al-Li alloy plate warm-rolled by 80% reduction during recrystallization annealing at 500 ℃ was investigated by electron backscatter diffraction, scanning electron microscopy and transmission electron microscopy. It is found that the elongated grain structures are caused by the lamellar distribution of recrystallization nucleation sites,being lack of large second phase particles (> 1 μm), and dispersive coherent particles (such as δ'andβ) concentrated in planar bands.The recrystallization process may be separated into three stages: firstly, recrystallization nucleation occurs heterogeneously, and the nuclei are concentrated in some planar zones parallel to rolling plane. Secondly, the grain boundaries interacted with small particles concentrate in planar bands, which is able to result in the elongated grain structures. The rate of the grain growth is controlled by the dissolution of these small particles. Thirdly, after most of small particles are dissolved, their hindrance to migration of the grain boundaries fades away, and the unrecrystallized zones are consumed by adjacent recrystallized grains. The migration of high angle grain boundaries along normal direction leads a gradual transformation from the elongated grains to the nearly equiaxed, which is driven by the tension of the grain boundaries.

  16. The Invasion of Iran by the Allies during World War II

    Süleyman Erkan

    2010-12-01

    Full Text Available When the Nazi Germany attacked the Soviets at the beginning of World War II, the USA, the UK and the Soviet Union took part on the same side and were called the Allies. In order to convey the military aid to the Soviets through Iran, the USA and the UK invaded Iran with the Soviets and dethroned Ahmad Reza Shah, who felt sympathy for Germany. By signing a treaty in 1942, they pledged to evacuate their troops from Iran six months after the war ended. They published a declaration that they would protect Iran’s territorial integrity as well as they repeated these decisions during the conference they made in Tehran in 1943. However; despite these decisions, a hidden rivalry began between the USSR and the West in Iran. The rivalry became very clear towards the end of the war. The Soviets wouldn’t withdraw from Iran. Additionally, they endeavored to divide Iran. The Iran crisis of 1946 between the West and the Soviets formed the start of the Cold War according to some people. As a country, Iran was highly affected by this process.

  17. Investigation of grain boundary chemistry in Al-Li 2195 welds using Auger electron spectroscopy

    Sanders, J.H. [National Aeronautics and Space Administration, Huntsville, AL (United States). George C. Marshall Space Flight Center

    1996-05-01

    Al-Li alloy 2195 is a low-density material with high fracture toughness that is particularly well-suited for aerospace systems. It will replace Al-Cu alloy 2219 in the Super Light Weight Tank (SLWT), a modified version of the external tank being developed for the Space Shuttle to support Space Station deployment. Recent efforts have focused on joining 2195 with variable polarity plasma arc welding, as well as repairing 2195 welds with tungsten inert gas techniques. During this study, Auger electron spectroscopy (AES) was used to examine grain boundary chemistry in 2195 welds. Results indicated that weld integrity depends on whether (and how much) the grain boundaries are covered with thin films comprised of a mixture of discontinuous Al{sub 2}O{sub 3} in Al (Al/Al{sub 2}O{sub 3}), which form during weld solidification. O was probably introduced as a contaminant in the shielding gases, occurring at low levels considered negligible for Al alloys that do not contain Li. However, oxidation kinetics in 2195 are increased by Li enrichment of small quantities of Al{sub 2}O{sub 3}, further enhancing thin film formation at the grain boundaries. Al{sub 2}O{sub 3} can ultimately occupy sufficient grain boundary area to degrade the material`s mechanical properties, producing negative effects that are compounded by the cumulative heat input of multi-pass repair welding. (orig.)

  18. Process Optimization of Dual-Laser Beam Welding of Advanced Al-Li Alloys Through Hot Cracking Susceptibility Modeling

    Tian, Yingtao; Robson, Joseph D.; Riekehr, Stefan; Kashaev, Nikolai; Wang, Li; Lowe, Tristan; Karanika, Alexandra

    2016-07-01

    Laser welding of advanced Al-Li alloys has been developed to meet the increasing demand for light-weight and high-strength aerospace structures. However, welding of high-strength Al-Li alloys can be problematic due to the tendency for hot cracking. Finding suitable welding parameters and filler material for this combination currently requires extensive and costly trial and error experimentation. The present work describes a novel coupled model to predict hot crack susceptibility (HCS) in Al-Li welds. Such a model can be used to shortcut the weld development process. The coupled model combines finite element process simulation with a two-level HCS model. The finite element process model predicts thermal field data for the subsequent HCS hot cracking prediction. The model can be used to predict the influences of filler wire composition and welding parameters on HCS. The modeling results have been validated by comparing predictions with results from fully instrumented laser welds performed under a range of process parameters and analyzed using high-resolution X-ray tomography to identify weld defects. It is shown that the model is capable of accurately predicting the thermal field around the weld and the trend of HCS as a function of process parameters.

  19. Characterization of Indian cigarette tobacco and its smoke aerosol by nuclear and allied techniques

    Forty brands of tobacco used in Indian cigarettes, 20 brands of bidis (tobacco rolled in wrapper leaves), 15 brands of chewing tobacco and 15 brands of snuff tobacco were analyzed by nuclear and allied techniques. The elements measured into tobacco can be grouped into seven categories from less than 1 ppm to 5% by weight. Concentration level varied from 0.5-5% for (Ca, K, Cl), 400-1500 ppm (Fe), 200-600 ppm (Na), 100-300 ppm (Ti, Mn, Br and Sr), 10-100 ppm (Cu, Zn and Rb), 1-10 ppm (Cr, Ni, Pb and La) and less than 1 ppm (As, Co, Cd, Sb, Hg and Eu). Among the above elements Cr, Ni, As, Cd, Pb, Hg and Sb are considered toxic. The percentage transfer of the elements from cigarette tobacco to smoke particles during smoking was also estimated using a smoking machine and collecting the smoke particles on a filter paper. The results show that Br, Cr, Sb and Zn have high percentage transfer from tobacco to its smoke of the order of 2-15%. Out of these Sb has the highest 15%. Cobalt, Fe and Sc have lowest percentage of transfer of the order of less than 1%. The percent transfer of these elements from tobacco to tobacco smoke is higher in case of bidis (1.5-3.0 times) as compared to cigarettes. In cigarettes also non-filter cigarettes have higher transfer (2-3 times) as compared to filter tip cigarettes. (author)

  20. Satisfaction with referral relationships between general practice and allied health professionals in Australian primary health care.

    Chan, Bibiana; Proudfoot, Judy; Zwar, Nick; Davies, Gawaine Powell; Harris, Mark F

    2011-01-01

    Chronic diseases require a multidisciplinary approach to provide patients with optimal care in general practice. This often involves general practitioners (GPs) referring their patients to allied health professionals (AHPs). The Team-link study explored the impact of an intervention to enhance working relationships between GPs and AHPs in general practice regarding the management of two chronic diseases: diabetes and ischaemic heart disease (IHD) or hypertension. The Measure of Multidisciplinary Linkages (MoML) questionnaire was developed to assess professional interactions and satisfaction with various aspects of the multidisciplinary relationship. Questionnaires were completed at baseline and 6 months by GPs (n=29) participating in the Team-link project and by AHPs (n=39) who had a current working relationship with these GPs. The Chronic Care Team Profile (CCTP) and Clinical Linkages Questionnaire (CLQ) were also completed by GPs. There were significant changes from baseline to 6 months after the intervention measures for individual items and overall MoML scores for GPs, especially items assessing 'contact', 'shared care' and 'satisfaction with communication'. The comparable item in the CLQ, 'Shared Care', also showed significant improvement. However, there were no statistically significant correlations between the change in overall 'Referral Satisfaction' scores in the GP MoML and the CLQ. The CCTP also improved and was a weak negative correlation between the GP MoML and two of the subscores of this instrument. There were no changes in AHP measure. This study demonstrates that the instrument is sensitive to differences between providers and conditions and is sensitive to change over time following an intervention. There were few associations with the other measures suggesting that the MoML might assess other aspects of teamwork involving practitioners who are not collocated or in the same organisation. PMID:21896261

  1. Application of nuclear and allied techniques for the characterization of forensic samples

    Forensic science deals with the application of various techniques - physical, chemical, and biological - for crime investigation. The legal implications of such analyses put considerable restrictions on the choice of techniques. Moreover, the unknown nature of materials, the limited availability of samples, and the large number of elements to be analysed put considerable strain on the analyst to select appropriate methods.The availability of nuclear techniques has considerably enhanced the scope of forensic analysis. Multi-technique approaches, involving nuclear and non-nuclear analytical methods, have proven to be valid and versatile. In this paper we present recent results from the use of nuclear and allied analytical methods for forensic applications. Some of the forensic samples recently analysed in our laboratories will also be discussed. One of the major types of samples handled pertains to the identification of gunshot residues, and nuclear techniques have considerably simplified interpretation of results. Analysis of unknown materials like powders or metallic fragments for the possible presence of illicit nuclear material is becoming more essential. Characterization of materials is also of importance in view of the possible dumping of toxic wastes from developed countries in developing countries. Detection of gold in a smuggling case was possible using X ray fluorescence and neutron activation analysis even though the smuggler used an innovative approach and converted the gold to a colourless cyanide complex to prevent its easy detection. Analysis of commercial pharmaceutical or medicinal preparations for toxic metals is also becoming important in view of the illegal use of materials like heroin. The increasing volume of illegal and criminal activities requires judicious application of nuclear and non-nuclear techniques for the conviction of criminals and, more importantly, for acquittal of the innocent. (author)

  2. A study of job satisfaction of nursing and allied health graduates from a Mid-Atlantic university.

    Lyons, Kevin J; Lapin, Jennifer; Young, Barbara

    2003-01-01

    There have been numerous changes in the health care system, including cost-containment efforts, the increased growth of managed care, and shortages of many health professionals. It is important to assess the impact these changes are having on the quality of health care delivery and the way various health professionals view their jobs. To accomplish this assessment, a sample of experienced nursing and allied health professionals were asked to provide their assessment of positive and negative changes in the health system over a 5-year period. They also were asked to indicate their level of satisfaction with their profession, their current job, and various aspects of that job. A Health Care Environment Survey was mailed to six groups of graduates of a mid-Atlantic college of health professions. Three of the groups had been in practice for 5 years, and three of the groups had been in practice for 10 years. The survey asked respondents to assess the magnitude of certain changes in the health system over the previous 5 years and to provide an assessment of their satisfaction with their current job. A total of 1,610 surveys were mailed, and 787 were returned for a rate of 49%. Nursing and allied health professionals who responded to the survey reported that there have been many more negative than positive changes in the health care system, including less job security, efficiency, and time available to spend with individual patients and increases in workload, paperwork, and control of health care by insurance companies. Even with these negative changes, nurses and allied health professionals report a high level of satisfaction with their jobs. In investigating the aspects of their jobs that were most related to satisfaction, having a feeling of worthwhile accomplishment from their job, opportunities for personal and professional growth, recognition and satisfaction with their workload were found to be the best predictors of job satisfaction. PMID:12665288

  3. Exploring the individual determinants of evidence uptake in allied health using a journal club as a medium

    Lizarondo L

    2013-03-01

    Full Text Available Lucylynn Lizarondo, Karen Grimmer, Saravana KumarInternational Center for Allied Health Evidence, University of South Australia, Adelaide, SA, AustraliaPurpose: A recent trial which examined the impact of a structured model of journal club (JC demonstrated variability in evidence-based practice (EBP outcomes across allied health disciplines. The aim of the current study was to determine if there are individual practitioner characteristics that could explain this variability and identify potential predictors of EBP outcomes.Method: This exploratory study used the data obtained from the JC trial. The predictive value of practitioner-related variables including academic degree, previous exposure to EBP training, and previous research involvement was analyzed using univariate logistic regression models. The dose of intervention was also included in the exploratory analysis.Results: The change in self-reported knowledge, evidence uptake, and attitude following participation in a JC was influenced by individual practitioner characteristics including their discipline, academic background, previous EBP training, previous research involvement, and JC attendance. Improvement in objective knowledge did not seem to be affected by any of these variables. Whether these individual characteristics have the ability to predict who will achieve less than, or greater than, 50% change in knowledge, attitude, and evidence uptake, is not known, except for academic background which predicted physiotherapists' improvement in attitude.Conclusion: Participation in a structured JC can lead to significant improvements in EBP knowledge irrespective of the characteristics of individual practitioners. The change in attitude and evidence uptake, however, may be influenced by individual characteristics which will therefore require careful consideration when designing EBP interventions. An EBP intervention is likely to be successful if a systematic assessment of the barriers at

  4. A systematic review of professional supervision experiences and effects for allied health practitioners working in non-metropolitan health care settings

    Ducat WH

    2015-08-01

    Full Text Available Wendy H Ducat,1,3 Saravana Kumar2 1Cunningham Centre, Darling Downs Hospital and Health Service, Australia; 2School of Health Sciences, International Centre for Allied Health Evidence, Sansom Institute, University of South Australia, Adelaide, SA, Australia; 3Rural Clinical School, School of Medicine, University of Queensland, Brisbane, QLD, Australia Introduction: In regional, rural, and remote settings, allied health professional supervision is one organizational mechanism designed to support and retain the workforce, provide clinical governance, and enhance service delivery. A systematic approach to evaluating the evidence of the experience and effects of professional supervision for non-metropolitan allied health practitioners and their service delivery is needed. Methods: Studies investigating the experience and effects of professional supervision across 17 allied health disciplines in non-metropolitan health services were systematically searched for using standardized keywords across seven databases. The initial search identified 1,574 references. Of these studies, five met inclusion criteria and were subject to full methodological appraisal by both reviewers. Two studies were primarily qualitative with three studies primarily quantitative in their approach. Studies were appraised using McMaster critical appraisal tools and data were extracted and synthesized. Results: Studies reported the context specific benefits and challenges of supervision in non-metropolitan areas and the importance of supervision in enhancing satisfaction and support in these areas. Comparison of findings between metropolitan and non-metropolitan settings within one study suggested that allied health in non-metropolitan settings were more satisfied with supervision though less likely to access it and preferred supervision with other non-metropolitan practitioners over access to more experienced supervisors. One study in a regional health service identified the lack

  5. Importance of clinical skills exam: An opportunity for allied healthcare students

    Faisal Khan

    2014-06-01

    clinical skills are deficient in students who perform least in the direct observation of the faculty member in training period; this may sometimes lead to not passing the clinical skills exam on the certification. Clinical skills assessment has a very important role in healthcare training and education. The author outlines the use of clinical skills exam and the ways in which a faculty can improve the method of training the students for clinical skills. The author is stimulating the idea of focusing of clinical skills exam for allied healthcare professionals, as it may lead to effective care for patients.

  6. COMPARATIVE OF DISTRACTION FACTORS AMONG MALE AND FEMALE STUDENTS OF SARI ALLIED MEDICAL SCIENCES’ STUDENTS

    Aligolbandi, Kobra; Siamian, Hasan; Balaghafari, Azita; Vahedi, Mohammad; Naeimi, Omolbanin

    2015-01-01

    Background: Distraction is nothing but internal intension of the mind towards involvement of the person. This research studied classroom distractions factors among students of Faculty of Allied medical Sciences in year 2014-2015, so that with the findings of the research about classroom distractors’ factors and to present proposed suggestions for decreasing and removing of distractions. Methods: This is an exploratory study. Data collection in this study was the researcher made questionnaire based on Likert-type scales. SPSS software was used for analyzing the data statistics such as mean, standard deviation and frequency ratings, each subset of the elements associated with distraction Friedman test has been used to determine the ranking of each of the components. Results: 139 people participated in the six majors in this study which 91 people (65.5%) was female, and 48 people (34.5%) was male. Maximum number of 31 people (22.3) was in laboratory science, Lowest number of 15 (10.08 percent) in medical records, 25 (18%) people in Radiology, health information technology and medical emergencies which each of above course studies with 23 people (16.5 %), Anesthesiology 22 (15.8 percent) participated in this study. Among the internal factors of distraction between male and female students, the sleeping factor was in first priority and “My phone / pager ringing or answering the mobile” was in last priority. Among distraction external factors in male students, the factor “Adornment of professors” with mean 3.27 and SD=1.30 and Mean Rank=23.06 was in first priority, and among external distraction factors in girl students, the factor, “Used clothing and exotic costumes of Classmates” with mean=3.21, SD=1.30 and mean rank=22.66 was in first priority and factor of “Surroundings Noise (mowing, drilling, construction, and …)” for male and female students was in last priority. Conclusions: Attention and concentration are crucial to effective accomplishment

  7. Splenic Trapping of Heat-Treated Erythrocytes in Leukaemia and Allied Conditions

    In a trial to find whether or not the enlarged spleen plays a role in the production of the form of anaemia commonly encountered in leukaemias and allied conditions, 44 patients suffering from these disease states were studied using 51Cr-labelled erythrocytes heated at 50°C for 60 min. Cells altered in this manner have been shown by various workers to be selectively sequestered by the spleen. As a control, the test was performed on 24 normal subjects. In these normals, the disappearance half-time of radioactivity from the circulation (T½ amounted to 172 ± 69 min (mean ± 1 S.D.), the lowest limit being 74 min. Accordingly, patients with less than 74 min were considered to have an abnormally rapid disappearance of heat-treated erythrocytes from the circulation and consequently exaggerated splenic sequestration of these altered cells. Splenic trapping of heat-treated erythrocytes was most marked in acute leukaemia (four out of six patients). However, three had associated normoblastic hypoplasia of the sternal marrow. Corticosteroids induced a remission with reversion of both processes responsible for the anaemia in two out of the four patients. In chronic myeloid leukaemia, exaggerated splenic sequestration of altered cells was seen in four of the 15 cases examined. This condition was of extra-erythrocytic origin, since repetition of the test using normal donor heat-treated erythrocytes did not significantly alter the disappearance half-time. However, there was no correlation between the size of the spleen and its avidity for trapping the altered cells. Follow-up studies showed that therapy caused prolongation of the half-time of heat-treated erythrocytes, the effect being more apparent after corticosteroids than with X-rays or Endoxan, In Hodgkin’s disease, increased red cell trapping was observed in two out of the seven patients studied. In contrast, five cases of chronic lymphatic leukaemia, six lymphosarcoma and five reticulum cell sarcoma had normal

  8. Prévision de l'épaisseur du film passif d'un acier inoxydable 316L soumis au fretting corrosion grâce au Point Defect Model, PDM Predicting the steady state thickness of passive films with the Point Defect Model in fretting corrosion experiments

    Geringer Jean

    2013-11-01

    Full Text Available Les implants orthopédiques de hanche ont une durée de vie d'environ 15 ans. Par exemple, la tige fémorale d'un tel implant peut être réalisée en acier inoxydable 316L ou 316LN. Le fretting corrosion, frottement sous petits déplacements, peut se produire pendant la marche humaine en raison des chargements répétés entre le métal de la prothèse et l'os. Plusieurs investigations expérimentales du fretting corrosion ont été entreprises. Cette couche passive de quelques nanomètres, à température ambiante, est le point clef sur lequel repose le développement de notre civilisation, selon certains auteurs. Ce travail vise à prédire les épaisseurs de cette couche passive de l'acier inoxydable soumis au fretting corrosion, avec une attention spécifique sur le rôle des protéines. Le modèle utilisé est basé sur le Point Defect Model, PDM (à une échelle microscopique et une amélioration de ce modèle en prenant en compte le processus de frottement sous petits débattements. L'algorithme génétique a été utilisé pour optimiser la convergence du problème. Les résultats les plus importants sont, comme démontré avec les essais expérimentaux, que l'albumine, la protéine étudiée, empêche les dégradations de l'acier inoxydable aux plus faibles concentrations d'ions chlorure ; ensuite, aux plus fortes concentrations de chlorures, un temps d'incubation est nécessaire pour détruire le film passif. Some implants have approximately a lifetime of 15 years. The femoral stem, for example, should be made of 316L/316LN stainless steel. Fretting corrosion, friction under small displacements, should occur during human gait, due to repeated loadings and un-loadings, between stainless steel and bone for instance. Some experimental investigations of fretting corrosion have been practiced. As well known, metallic alloys and especially stainless steels are covered with a passive film that prevents from the corrosion and degradation

  9. An exploration of issues of management and intention to stay: allied health professionals in South West Victoria, Australia.

    Stagnitti, Karen; Schoo, Adrian; Dunbar, James; Reid, Catherine

    2006-01-01

    Management of allied health staff and services often has implications for staff stability and retention. A survey of allied health staff in South West Victoria was conducted in 2003 to explore issues relating to recruitment and retention. Findings relating to management and retention of staff in their current job are addressed in this report. A total of 138 staff returned their questionnaires. Results were related to Maslow's hierarchy of needs, level of belonging, with professional needs identified as feeling supported, orientation to the position, clear job description, and able to recommend the position to others. Qualitative data showed that recommending the position was associated with job satisfaction, autonomy, flexibility, and variety of work. The immediate management structure was significantly related to retention. Reasons given for intending to leave were related to management categories. These were management structure, lack of career structure, and lack of professional support. Reasons given by respondents for not recommending their current position were as follows: not for long-term career, risk of deskilling if staying too long, and financially unrewarding. These reasons were also related to management. Positive reasons for staying, which were related to management, included flexible work conditions, variety of clinical and management experience, good working environment, good support, and autonomy. Recommendations are given for organizational development and training for managers. PMID:17243438

  10. Étude expérimentale de l'interaction laser-matière dans le cas du soudage d'un acier inoxydable austénitique par laser Nd:YAG continu de 2 kW

    Dumord, E.; Jouvard, J. M.; Grevey, D.; Druetta, M.; Ottavi, P.

    1997-05-01

    The laser-matter interaction acting during cw 2 kW Nd:YAG laser welding of an austenitic stainless steel is studied and particulary the effects linked to the presence of a keyhole in the liquid bath. This is done in order to define parameters useful to the process modelling. The absorption factor of target has been measured in order to better understand the Nd:YAG laser/stainless steel 304 interaction. Then an experimental approach of the keyhole angle value determination is proposed. Values are presented showing the important keyhole angle at the bottom of the bead. Finally a study relative to the plume above the keyhole shows that it is responsible for the formation of the nail-head part, observed on the experimental melting zone, by laser beam scattering. L'interaction laser-matière se produisant lors du soudage par laser Nd:YAG continu de 2kW d'un acier inoxydable austénitique est étudiée, et notamment les effets liés à la présence du capillaire dans le bain liquide, de façon à définir les paramètres utiles à la modélisation du processus. Le facteur d'absorption des cibles utilisées a été mesuré afin de mieux appréhender l'interaction laser Nd:YAG/acier inoxydable austénitique 304. Puis une approche expérimentale de détermination de l'angle d'inclinaison du capillaire est proposée. Des valeurs sont présentées montrant la forte inclinaison du capillaire en fond de cordon. Finalement une étude relative au panache présent audessus du capillaire met en évidence qu'il est responsable de la formation de la partie en tête de clou observée sur les zones fondues expérimentales par diffusion du faisceau laser

  11. Application of nuclear and allied techniques for the characterisation of forensic samples

    Full text: Forensic science deals with the application of various techniques for physics, chemistry and biology for crime investigation. The legal implication of such analysis put considerable restriction on the choice of analytical techniques. Moreover, the unknown nature of the materials, the limited availability of samples and the large number of elements to be analysed put considerable strain on the analytical chemist on the selection of the appropriate technique. The availability of nuclear techniques has considerably enhanced the scope of forensic analysis. This paper deals with the recent results on the use of nuclear and allied analytical techniques for forensic applications. One of the important types of samples of forensic importance pertain to the identification of gunshot residues. The use of nuclear techniques has considerably simplified the interpretation of results through the use of appropriate elements like Ba, Cu, Sb, Zn, As and Sn etc. The combination of non-nuclear techniques for elements like Pb and Ni which are not easily amenable to be analysed by NAA and the use of appropriate separation procedure has led to the use of this method as a valid and versatile analytical procedure. In view of the presence of a large amounts of extraneous materials like cloth, body tissues etc in these samples and the limited availability of materials, the procedures for sample collection, dissolution and analysis have been standardized. Analysis of unknown materials like powders, metallic pieces etc. for the possible presence of nuclear materials or as materials in illicit trafficking is becoming important in recent years. The use of multi-technique approach is important in this case. Use of non-destructive techniques like XRF and radioactive counting enables the preliminary identification of materials and for the detection of radioactivity. Subsequent analysis by NAA or other appropriate analytical methods allows the characterization of the materials. Such

  12. Orthomolecular Approach to the Treatment of Schizophrenia, Childhood Psychoses, and Allied Disorders Such as: Hyperactivity, Autism, Hypoglycemia, and Sub Clinical Pellagra.

    Lall, Geeta Rani

    Presented is research to support the orthomolecular rather than the psychodynamic approach to treating schizophrenia, psychoses, and allied disorders in children. The orthomolecular approach, also known as orthomolecular psychiatry, is reported to involve the administration of megavitamins (following a study to determine biochemical needs),…

  13. Knowledge and Attitudes of Allied Health Professional Students regarding the Stroke Rehabilitation Team and the Role of the Speech and Language Therapist

    Byrne, Aine; Pettigrew, Catharine M.

    2010-01-01

    Background: One of the major barriers to effective team working among healthcare professionals is a lack of knowledge of each other's roles. The importance of understanding Irish healthcare students' attitudes towards team working and each other's roles led to the development of this study. Aims: The aims were to investigate allied health…

  14. An African-American Bibliography: Science, Medicine, and Allied Fields. Selected Resources from the Collections of the New York State Library.

    Strasser, Theresa C., Comp.

    The second in a series of African-American bibliographies, this bibliography was issued in honor of both Black History Month and Inventors Day in February 1991. It focuses on the contributions of black Americans in the areas of science, technology, medicine, and allied fields such as dentistry and nursing. The materials cited emphasize the…

  15. Mida teha Tarmo Looduse olukorras? / Lukas, Tõnis; Ginter, Jüri; Raba, Rannar; Välis, Meelis; Lunter, Alli; Otepalu, Olavi

    2008-01-01

    Küsimusele vastavad haridusminister Tõnis Lukas, Tartu ülikooli haridusteaduskonna prodekaan Jüri Ginter, "Sakala" arvamustoimetaja Rannar Raba, Kullamaa keskkooli direktor Meelis Välis, Viljandi maagümnaasiumi õpetaja Alli Lunter ja Audentese gümnaasiumi õppealajuhataja Olavi Otepalu

  16. L’Italie et les Alliés de 1914 à 1919 : indépendance ou subordination ?

    Boudas, Emmanuel,

    2009-01-01

    Cette thèse a pour objectif d’étudier les relations interalliées entre l’Italie et l’Entente avec rigueur et dans toutes ses dimensions : militaire, diplomatique, économique et sociale de 1914 à 1919. Nous avons établi des rapports de forces et des lignes stratégiques structurants les anciens et nouveaux équilibres stratégiques de la guerre à la paix de Versailles. L’Italie de l’indépendance stratégique en 1914-1916 à la subordination envers lesAlliés en 1917, pour finir par être vassalisée e...

  17. Distribution, species abundance, and nesting-site use of Atlantic coast colonies of herons and their allies

    Custer, T.W.; Osborn, R.G.; Stout, W.F.

    1980-01-01

    In 1975 and 1976, eight teams of investigators located 262 colonies of nesting herons and their allies along the Atlantic coast from Florida to Maine. Fourteen species were found in Florida, numbers decreasing to seven in Maine. Colonies censused in the extreme south and north of the study area were lower in number of species and number of adults than those in the intermediate area. More than 90% of the colony sites surveyed in 1975 were active in 1976. The total number of nesting adults per colony, number of species per colony, and number of nestinga dults of each speciesp er colonyi n 1976 were significantlyc orrelatedw ith their respective values for 1975. Abandoned and new colonies appeared to be satellites of nearby reused colonies; they had fewer individuals and species than reused colonies and were closer to reused colonies than reused colonies were to each other.

  18. Effect of electric current pulse on grain growth in superplastic deformation of 2091 Al-Li alloy

    刘志义; 许晓嫦; 崔建忠

    2003-01-01

    The effect of electric current pulse on the grain growth in the superplastic deformation of 2091 Al-Li alloy was investigated. Optical metallographic microstructure observation and average linear intercept measuring results show that at same strain, the grain size in the superplastic deformation loaded with electric current pulse is smaller than that unemploying electric current pulse, and so does the grain growth rate. TEM observation shows that the dislocation density at grain boundary in the superplastic deformation applied with electric current pulse is lower than that unemploying electric current pulse.It indicates that electric current pulse increases the rate of dislocation slip and climb in grain boundary, which leads to a decrease of both the density of the dislocation slipping across grain boundary at same strain rate and the driving force for grain growth, therefore the rate of grain growth decreases.The established model for grain growth shows an exponential relation of grain size with strain.

  19. OBSERVATION OF REMOTE AND RECENT THERAPEUTIC EFFECTS OF ACUPOINT-THREAD EMBEDDING, WESTERN MEDICINE OR ALLIED THERAPY ON PERENNIAL ALLERGIC RHINITIS

    ZHANG Shi-ping; CHEN Li-yi; LUO Rui-lian; GUO Yuan-qi; WU Wen-yi

    2006-01-01

    Objective: The comparison of the remote and recent therapeutic effects on perennial allergic rhinitis was carried on among single application of acupoint-thread embedding, western medicine (certirizine + fl ixonase) and allied therapy. Method: Ninety cases were randomized into thread-embedding group, western medicine group and embedding+ western medicine group (allied-therapy group), 30 cases in each one.In thread embedding group, Yingxiang (迎香 LI 20) and Feishu (肺俞 BL 13) were selected for thread embedding, once a week, totally 4 treatments were required. In western medicine group, certirizine tablet 10 mg in combination with fl ixonase sprayer was applied once per day, continuously for 30 days in treatment.In allied-therapy group, both of the above methods were adopted continuously for 30 days in treatment. The therapeutic effects were in statistics at the end of treatment and 1 year later. Results: At the end of treatment, in thread-embedding group, 21 cases were remarkably effective, 3 cases effective and 6 cases no effect. In western medicine group, 20 cases were remarkably effective, 3 cases effective and 7 cases no effect. In allied-therapy group, 23 cases were remarkably effective, 2 cases effective and 5 cases no effect. It was shown in statistics that there was no significant difference in therapeutic effects among three groups (P>0.05). But one year after the end of treatment, it was indicated that in thread-embedding group, 3 cases were remarkably effective, 10 cases effective and 17 cases no effect; in western medicine group, 2 cases were remarkably effective, 9 cases effective and 19 cases no effect; in allied-therapy group, 7 cases were remarkably effective, 11 cases effective and 12 cases no effect. The significant difference in the therapeutic effects had not been presented in the comparison between thread-embedding group and western medicine group (P>0.05), but that had been presented between allied-therapy group with either of the

  20. Allied health professionals' intention to work for the National Health Service: a study of stayers, leavers and returners.

    Coombs, Crispin; Arnold, John; Loan-Clarke, John; Bosley, Sara; Martin, Caroline

    2010-05-01

    While there has been a recent squeeze on staff costs, it continues to be important to offer graduating clinical staff National Health Service (NHS) employment in order to maintain the long-term strength of the service. In addition, the experiences of the Canadian nursing profession suggest that complacency about an improving recruitment situation can lead to problems. Consequently, the objective of this study was to identify what influences allied health professionals' (AHPs) intention to work for the NHS. A postal survey was sent to members of four Allied Health Professions equally (N = 4800), targeting Stayers in, Leavers from, and Returners to, the NHS. One thousand nine hundred and thirty-nine questionnaires were returned giving an overall response rate of 40%. Stayers' intention to remain in the NHS was influenced by continuing professional development opportunities, confidence that they can find NHS work, commitment to their profession, a sense of moral obligation and a belief that other people important to them think it is a good idea. Returners' intention is influenced by similar factors as Stayers. Leavers are influenced by similar factors as Stayers/Returners but to a lesser extent. The study shows that perceptions of various NHS work characteristics, which lead to reasonably positive attitudes towards the NHS, do not necessarily translate into intention to work for it. The study also shows that intention to work for the NHS is not solely dependent on perceptions of NHS jobs and that career-decision-making is a social process, with the opinions of people who are important to AHPs also influencing career decisions. PMID:20424271

  1. Endommagement des aciers TWIP pour application automobile

    Lorthios, Julie

    2011-01-01

    Co-encadrement de la thèse : Matthieu Mazière Ultra high strength Fe-Mn-C Twinning Induced Plasticity (TWIP) austenitic steels exhibit excellent formability for automotive safety parts. By refining the microstructure during straining, deformation twinning induces a high hardening rate and provides high ultimate tensile strength (>1000MPa) combined with excellent ductility (>50%). However, plastic instabilities and TWIP effect lead to atypical failures modes and standard forming limit curve...

  2. Assessing the contribution of prescribing in primary care by nurses and professionals allied to medicine: a systematic review of literature

    Bhanbhro Sadiq

    2011-12-01

    Full Text Available Abstract Background Safe and timely access to effective and appropriate medication through primary care settings is a major concern for all countries addressing both acute and chronic disease burdens. Legislation for nurses and other professionals allied to medicine to prescribe exists in a minority of countries, with more considering introducing legislation. Although there is variation in the range of medicines permitted to be prescribed, questions remain as to the contribution prescribing by nurses and professionals allied to medicine makes to the care of patients in primary care and what is the evidence on which clinicians, commissioners of services and policy makers can consider this innovation. Methods A integrative review of literature on non-medical prescribing in primary care was undertaken guided by dimensions of health care quality: effectiveness, acceptability, efficiency and access. Results 19 papers of 17 empirical studies were identified which provided evidence of patient outcome of non medical prescribing in primary care settings. The majority were undertaken in the UK with only one each from the USA, Canada, Botswana and Zimbabwe. Only two studies investigated clinical outcomes of non-medical prescribing. Seven papers reported on qualitative designs and four of these had fewer than ten participants. Most studies reported that non medical prescribing was widely accepted and viewed positively by patients and professionals. Conclusions Primary health care is the setting where timely access to safe and appropriate medicines is most critical for the well-being of any population. The gradual growth over time of legislative authority and in the numbers of non-medical prescribers, particularly nurses, in some countries suggests that the acceptability of non-medical prescribing is based on the perceived value to the health care system as a whole. Our review suggests that there are substantial gaps in the knowledge base to help evidence

  3. X-ray microtomography of fatigue crack closure as a function of applied load in Al-Li 2090 T8E41 samples

    Morano, R.; Stock, S.R.; Davis, G.R.; Elliott, J.C.

    2000-07-01

    Crack closure is held to be responsible for very low fatigue crack growth rates in many alloys such as Al-Li 2090 T8E41, and early crack face contact during unloading or prolonged contact during loading seems to reduce the driving force for crack extension. High resolution x-ray computed tomography (i.e., microtomography) allows one to image the entire volumes of samples and to quantify opening as a function of applied load over the entire crack surface. Crack closure results are reported for a fatigue crack grown under load ratio R = 0.1 in a compact tension sample of Al-Li 2090 T8E41; the crack was free to choose its path unconstrained by side-grooves which are normally used to suppress crack deflection. The inter-relationship between crack path, crack face contact and applied load level are discussed.

  4. Laser-induced reversion of $\\delta^{'}$ precipitates in an Al-Li alloy: Study on temperature rise in pulsed laser atom probe

    Khushaim, Muna; Al-Kassab, Talaat

    2015-01-01

    The influence of tuning the laser energy during the analyses on the resulting microstructure in a specimen utilizing an ultra-fast laser assisted atom probe was demonstrated by a case study of a binary Al-Li alloy. The decomposition parameters, such as the size, number density, volume fraction and composition of $\\delta^{'}$ precipitates, were carefully monitored after each analysis. A simple model was employed to estimate the corresponding specimen temperature for each value of the laser energy. The results indicated that the corresponding temperatures for the laser energy in the range of 10 to 80 pJ are located inside the miscibility gap of the binary Al-Li phase diagram and fall into the metastable equilibrium field. In addition, the corresponding temperature for a laser energy of 100 pJ was in fairly good agreement with reported range of $\\delta^{'}$ solvus temperature, suggesting a result of reversion upon heating due to laser pulsing.

  5. Recognition of hypoxyloid and xylarioid Entonaema species and allied Xylaria species from a comparison of holomorphic morphology, HPLC profiles, andribosomal DNA sequences

    Stadler, M.; Fournier, J.; Læssøe, Thomas; Lechat, C.; Tichy, H.-V.; Piepenbring, M.

    2008-01-01

    The genus Entonaema comprises Xylariaceae with hollow, gelatinous stromata that accumulate liquid. Some of its species, including the type species, appear related to Daldinia from a polyphasic approach, comprising morphological studies, comparisons of ribosomal DNA sequences, and high performance...... appear more promising as chemotaxonomic traits to segregate this genus. As xylaral was also found in Nemania and Stilbohypoxylon spp., while being apparently absent in Hypoxylon and allied genera, it may be a chemotaxonomic marker for Xylariaceae with Geniculosporium-like anamorphs...

  6. Important, misunderstood, and challenging: a qualitative study of nurses’ and allied health professionals’ perceptions of implementing self-management for patients with COPD

    Young, Hannah ML; Apps, Lindsay D; Harrison, Samantha L; Johnson-Warrington, Vicki L; Hudson, Nicky; Singh, Sally J.

    2015-01-01

    Background In light of the growing burden of COPD, there is increasing focus on the role of self-management for this population. Currently, self-management varies widely. Little is known either about nurses’ and allied health professionals’ (AHPs’) understanding and provision of self-management in clinical practice. This study explores nurses’ and AHPs’ understanding and implementation of supported COPD self-management within routine clinical practice. Materials and methods Nurses and AHPs pa...

  7. Should I stay or should I go? Exploring the job preferences of allied health professionals working with people with disability in rural Australia

    Gallego, Gisselle; Dew, Angela; Lincoln, Michelle; Bundy, Anita; Chedid, Rebecca Jean; Bulkeley, Kim; Brentnall, Jennie; Veitch, Craig

    2015-01-01

    Introduction The uneven distribution of allied health professionals (AHPs) in rural and remote Australia and other countries is well documented. In Australia, like elsewhere, service delivery to rural and remote communities is complicated because relatively small numbers of clients are dispersed over large geographic areas. This uneven distribution of AHPs impacts significantly on the provision of services particularly in areas of special need such as mental health, aged care and disability s...

  8. Exploring the perspectives of allied health practitioners toward the use of journal clubs as a medium for promoting evidence-based practice: a qualitative study

    Kumar Saravana; Grimmer-Somers Karen; Lizarondo Lucylynn M

    2011-01-01

    Abstract Background Research evidence suggests that journal clubs (JCs) are one approach which can be used to bridge the gap between research and clinical practice. However, there are issues which potentially threaten their viability such as on-going participation or compliance with attendance, which require further exploration. The objectives of this study are: to explore the views and perspectives of allied health practitioners (AHPs) regarding the use of any type of JC in promoting evidenc...

  9. Implementation of evidence-based practice across medical, nursing, pharmacological and allied healthcare professionals: a questionnaire survey in nationwide hospital settings

    Weng, Yi-Hao; Kuo, Ken N.; Yang, Chun-Yuh; Lo, Heng-Lien; Chen, Chiehfeng; Chiu, Ya-Wen

    2013-01-01

    Background Implementation of evidence-based practice (EBP) is regarded as core competence to improve healthcare quality. In the current study, we investigated the EBP of six groups of professionals: physicians, nurses, pharmacists, physical therapists, technicians, and other allied healthcare personnel. Methods A structured questionnaire survey of regional hospitals throughout Taiwan was conducted by post in 2011. Questionnaires were mailed to all healthcare workers of 11 randomly selected ho...

  10. Development and early experience from an intervention to facilitate teamwork between general practices and allied health providers: the Team-link study

    Zwar Nick; Wan Qing; Daniel Christopher; Chan Bibiana C; Harris Mark F; Davies Gawaine

    2010-01-01

    Abstract Background This paper describes the development and implementation of an intervention to facilitate teamwork between general practice and outside allied and community health services and providers. Methods A review of organizational theory and a qualitative study of 9 practices was used to design an intervention which was applied in four Divisions of General Practice and 26 urban practices. Clinical record review and qualitative interviews with participants were used to determine the...

  11. What did we do to Germany during the Second World War? A British perspective on the Allied strategic bombing campaign 1940-45

    Ryan, Joseph F.; Hewer, Chris

    2016-01-01

    The Allied strategic bombing of Germany during World War II was a significant event in the history of Europe. Social representations of this event were investigated at the level of individual knowledge. To establish an index of British collective memory for this event, 169 adults (aged 18–87 years), divided into three generational groups, completed a questionnaire. The findings showed a disparity between subjective knowledge and historical actuality across all three age groups. A decline in u...

  12. IN SEARCH OF ALLIES. THE USSR AND THE WESTERN POWERS ON THE EVE OF THE SECOND WORLD WAR

    A. G. IVANOV

    2016-01-01

    Full Text Available The article analyses the problems which emerged on the eve of the Second World War: the European crisis of 1939, Anglo-French guarantees to countries of Eastern Europe, talks between the USSR, Great Britain and France and the Soviet-German non-aggression Pact. In conditions of the acutest crisis a question of general security acquired a key meaning. To stop the aggressor and to prevent global catastrophe was only possible by collective efforts of the great powers and their allies. Great Britain and France guaranteed independence of several countries of Eastern Europe, but they could not compensate the absence of a grand anti-German alliance. The USSR was striving to erect a system of collective security, but its possibilities were limited. More than that Great Britain and France did not refuse the idea of appeasing Germany at the expense of Poland, and this actually excluded their participation in anti-German coalition. The unwillingness of the Western powers to cooperate with the USSR closely showed itself at the AngloFrench-Soviet talks in spring and summer 1939. As a result of this the USSR, having no alternative, agreed to sign the non-aggression Pact with Germany.

  13. A preliminary evaluation of the Visual CARE Measure for use by Allied Health Professionals with children and their parents.

    Place, Morag A; Murphy, Joan; Duncan, Edward A S; Reid, Jane M; Mercer, Stewart W

    2016-03-01

    The Consultation and Relational Empathy (CARE) Measure (Mercer et al., 2004) is a patient-rated experience measure of practitioner empathy, developed and validated within adult health services. This study reports the feasibility, acceptability, reliability and validity of three adapted versions of the original CARE measure for the paediatric setting, namely the Visual CARE Measure 5Q, 10Q and 10Q Parent (also known as the Paediatric CARE Measure). Three hundred and sixty-nine participants (N = 149 children (40%) and N = 220 parents (60%)) completed the measure following consultation with an Allied Health Professional (AHP). AHPs felt it was feasible to use the measure in routine practice and the majority of children and parents found the measure easy to understand (98%) and complete (98%). Internal reliability (Cronbach's α) was .746 for the 5Q, .926 for the 10Q and .963 for the 10Q parent. Few participants used the 'not applicable' response (N = 28 (8%)), suggesting high content validity. AHPs found the measures relevant (95%) and useful (90%) and reported that they were likely to use them again (96%). The Visual CARE Measure shows promise as a useful tool to enable children and their parents to give their views. Further research on the tool's reliability and validity is required. PMID:25352539

  14. MYRIAPORA SCIUTOI N. SP., A NEW FOSSIL ATLANTO-MEDITERRANEAN BRYOZOAN SPECIES, AND COMMENTS ON ALLIED TAXA

    ANTONIETTA ROSSO

    2015-11-01

    Full Text Available We describe a new fossil species of Myriapora, M. sciutoi n. sp., which is similar in general appearance to the Recent, Atlantic, deep-sea species M. bugei d'Hondt, 1975. The new species has been found in sediments of the late Tortonian-Messinian of NW Morocco, and the Gelasian of NE Sicily and south Calabria, Italy. The main diagnostic characters of the new species are: erect, rigid growth, with lateral branches developing at right angles; arrangement of the zooids in whorls; dimorphic orifice, which has a very marked sinus in autozooids; prominent ooecia usually present in all the zooids from the same whorl. The previous diagnosis of the genus has been amended in order to include the presence of species with zooids arranged in whorls, in addition to those arranged quincuncially. A generic reassignment to Myriapora or to the allied genus Leieschara for all the known species to date is also proposed. The geographical and stratigraphical distribution of M. sciutoi n. sp. suggests a recolonization of the Mediterranean, after the Messinian Salinity Crisis, from founder populations that have survived in the Atlantic.

  15. Review for librarians of evidence-based practice in nursing and the allied health professions in the United States

    Kronenfeld, Michael; Stephenson, Priscilla L.; Nail-Chiwetalu, Barbara; Tweed, Elizabeth M.; Sauers, Eric L.; McLeod, Tamara C. Valovich; Guo, Ruiling; Trahan, Henry; Alpi, Kristine M.; Hill, Beth; Sherwill-Navarro, Pamela; Allen, Margaret (Peg); Stephenson, Priscilla L.; Hartman, Linda M.; Burnham, Judy; Fell, Dennis; Kronenfeld, Michael; Pavlick, Raymond; MacNaughton, Ellen W.; Nail-Chiwetalu, Barbara

    2007-01-01

    Objective: This paper provides an overview of the state of evidence-based practice (EBP) in nursing and selected allied health professions and a synopsis of current trends in incorporating EBP into clinical education and practice in these fields. This overview is intended to better equip librarians with a general understanding of the fields and relevant information resources. Included Professions: Professions are athletic training, audiology, health education and promotion, nursing, occupational therapy, physical therapy, physician assisting, respiratory care, and speech-language pathology. Approach: Each section provides a description of a profession, highlighting changes that increase the importance of clinicians' access to and use of the profession's knowledgebase, and a review of each profession's efforts to support EBP. The paper concludes with a discussion of the librarian's role in providing EBP support to the profession. Conclusions: EBP is in varying stages of growth among these fields. The evolution of EBP is evidenced by developments in preservice training, growth of the literature and resources, and increased research funding. Obstacles to EBP include competing job tasks, the need for additional training, and prevalent attitudes and behaviors toward research among practitioners. Librarians' skills in searching, organizing, and evaluating information can contribute to furthering the development of EBP in a given profession. PMID:17971887

  16. From “allies without alliance” to concerted action: Romania and Finland in the aftermath of the Operation Barbarossa (1941

    Silviu Miloiu

    2010-11-01

    Full Text Available This study describes the relationship between two small and lesser states joining the German attack against Soviet Union in an attempt to recapture the territories lost to Soviet Union in 1940. It is conceived as an in-depth analysis of the Romanian-Finnish relations based on the criticism of archival sources discovered in the Romanian, Finnish and British archives. Becoming “allies without alliance” almost overnight, the relations between the two countries acknowledged a quick shift from low profile bonds to an agreement based on a combination of balance of power and joint action. The aim was to remove the threat Russia was posing to the two countries and to increase their influence at a peace conference to be open following the expected defeat of their big neighbour. Romania was the advocate of closer ties between the two countries keeping in line with its search for influence rather than autonomy in its foreign relations, while Finland was more prudent consistent with its choice for autonomy rather than influence.

  17. The ultilization of whole-body autoradiography and allied tracer techniques in distribution and biotransformation studies of N-nitrosamines

    The tissue disposition of various N-nitrosamines has been examined by whole-body autoradiography and allied tracer techniques in a series of studies. Tracing of N-nitrosamine-metabolizing tissues was a major purpose of the studies. The data obtained provide evidence that the in vivo localization of N-nitrosamine metabolites in various tissues is almost invariably due to local metabolism in the same tissues and that the tumourigenesis by N-nitrosamines is to a considerable extent correlated with this metabolism. The epithelial linings of the upper digestive tract and respiratory pathways were usually very active in N-nitrosamine metabolism, and these tissues also were prevalent sites for N-nitrosamine carcinogenesis. The presence of cytochrome P-450 activity has been shown in these structures and may normally play a role in defending the body against unrestrained uptake of xenobiotics. However, noxious effects may instead be induced for chemicals bioacivated by cytochrome P-450-dependent reactions, such as N-nitrosamines. (author)

  18. Nigella sativa Fixed and Essential Oil Supplementation Modulates Hyperglycemia and Allied Complications in Streptozotocin-Induced Diabetes Mellitus

    Muhammad Tauseef Sultan

    2014-01-01

    Full Text Available In the recent era, diabetes mellitus has emerged as one of the significant threats to public health and this situation demands the attention of the researchers and allied stakeholders. Dietary regimens using functional and nutraceutical foods are gaining wide range of acceptance and some traditional medicinal plants are of considerable importance. The main objective of this instant study was to explore the antidiabetic potential of Nigella sativa fixed oil (NSFO and essential oil (NSEO. Three experimental groups of rats received diets during the entire study duration, that is, D1 (control, D2 (NSFO: 4.0%, and D3 (NSEO: 0.30%. Experimental diets (NSFO & NSEO modulated the lipid profile, while decreasing the antioxidant damage. However, production of free radicals, that is, MDA, and conjugated dienes increased by 59.00 and 33.63%, respectively, in control. On the contrary, NSFO and NSEO reduced the MDA levels by 11.54 and 26.86% and the conjugated dienes levels by 32.53 and 38.39%, respectively. N. sativa oils improved the health and showed some promising anti-diabetic results.

  19. The Community Based Rehabilitation Programme of the University of the Philippines Manila, College of Allied Medical Professions

    Jeffrey Pe-Benito Datangel

    2012-02-01

    Full Text Available Purpose: This paper reports the process of development of a CBR programme by UP Manila College of Allied Medical Professions, and its impact on the stakeholders: persons with disabilities, students and alumni, CBR workers, local leaders and the agencies involved in the programme.Method: The impact of the programme was assessed through interviews, questionnaires, focus group discussions and review of secondary data and records.Results: The programme results show that the condition of persons with disabilities has improved and there has been a remarkable change in their knowledge, attitudes and skills. The positive attitudes, skills and values of students were enhanced, and the CBR programme was a “character builder” for them as rehabilitation professionals. The CBR workers who participated in the programme learnt to appreciate the potential of persons with disabilities and to accept their limitations. Another key result was the pledge by local leaders to sustain CBR in their own villages.Conclusions: The students and alumni reported that the CBR programme should be replicated for nation-building. The different stakeholders reported that it helped improve the quality of life of people with disabilities and contributed to community development.DOI: 10.5463/dcid.v22i3.110

  20. IE Information Notice No. 85-16: Time/current trip curve discrepancy of ITE/Siemens-Allis molded case circuit breaker

    The staff recently received information from the Seabrook Nuclear Station describing a deficiency of the magnetic instantaneous trip element in the ITE-Siemens-Allis HE-3-M040 molded-case circuit breaker. These circuit breakers were housed in electrical panels supplied by Gould, Inc., Westminister, Maryland. The deficiency was discovered during the testing of an incoming shipment of these breakers. Specifically, the licensee reported that testing of an incoming shipment of 15 of these ITE/Siemens-Allis circuit breakers revealed that 10 of the 15 failed to pass the instantaneous magnetic overcurrent trip test. The pickup current values for the failed trip elements were higher than the published ITE time-current curve for this type of circuit breaker. However, the licensee also reports that approximately 75 of the same model of ITE/Siemens-Allis circuit breakers supplied in previous shipments have rested satisfactorily. Further investigation into the problem by the manufacturer led to the conclusion that the time-current trip range should be 600 to 1,000 amperes and not 400 to 700 amperes as previously published by the manufacturer. The manufacturer is now reissuing a new set of correct time-current curves that reflect the trip range of 600 to 1,000 amperes

  1. Development and early experience from an intervention to facilitate teamwork between general practices and allied health providers: the Team-link study

    Zwar Nick

    2010-04-01

    Full Text Available Abstract Background This paper describes the development and implementation of an intervention to facilitate teamwork between general practice and outside allied and community health services and providers. Methods A review of organizational theory and a qualitative study of 9 practices was used to design an intervention which was applied in four Divisions of General Practice and 26 urban practices. Clinical record review and qualitative interviews with participants were used to determine the key lessons from its implementation. Results Facilitating teamwork across organizational boundaries was very challenging. The quality of the relationship between professionals was of key importance. This was enabled by joint education and direct communication between providers. Practice nurses were key links between general practices and allied and community health services. Conclusions Current arrangements for Team Care planning provide increased opportunities for access to allied health. However the current paper based system is insufficient to build relationships or effectively share roles as part of a patient care team. Facilitation is feasible but constrained by barriers to communication and trust.

  2. Contribution à la modélisation du soudage TIG des tôles minces d'acier austénitique 304L par un modèle source bi-elliptique, avec confrontation expérimentale

    Aissani, M.; Maza, H.; Belkessa, B.; Maamache, B.

    2005-05-01

    Ce travail contribue dans la modélisation du phénomène du soudage de l'acier inoxydable Austénitique 304L, afin d'étudier le comportement thermique d'un joint de soudure, obtenu par le procédé de soudage à l'arc électrique TIG (Tungsten-Inert-Gas). Le modèle simulant la source d'énergie de soudage, utilise une distribution surfacique Gaussienne du flux de chaleur provenant de l'arc électrique. La forme de cette source est supposée circulaire pour un premier cas et de forme bi-elliptique pour un second cas, tout en procédant à l'évaluation des champs et cycles thermiques à chaque instant, pour déterminer l'étendu des zones à risque, et l'effet de la vitesse de soudage sur ces dernières. Permettant ainsi de remonter par la suite, aux problèmes de contraintes résiduelles et déformations générées dans l'assemblage soudé. L'équation de chaleur régissant le problème est discrétisée par la méthode des volumes finis. Les calculs sont effectués en considérant que les propriétés physiques et thermiques ainsi que les conditions aux limites de convection et rayonnement, sont dépendante de la température. Pour évaluer la précision du modèle, une comparaison avec des mesures expérimentales de température d'un essai de soudage a été effectuée, les résultats indiquent un bon accord.

  3. Modélisation du procédé de soudage hybride Arc / Laser par une approche level set application aux toles d'aciers de fortes épaisseurs A level-set approach for the modelling of hybrid arc/laser welding process application for high thickness steel sheets joining

    Desmaison Olivier

    2013-11-01

    Full Text Available Le procédé de soudage hybride Arc/Laser est une solution aux assemblages difficiles de tôles de fortes épaisseurs. Ce procédé innovant associe deux sources de chaleur : un arc électrique produit par une torche MIG et une source laser placée en amont. Ce couplage améliore le rendement du procédé, la qualité du cordon et les déformations finales. La modélisation de ce procédé par une approche Level Set permet une prédiction du développement du cordon et du champ de température associé. La simulation du soudage multi-passes d'une nuance d'acier 18MnNiMo5 est présentée ici et les résultats sont comparés aux observations expérimentales. The hybrid arc/laser welding process has been developed in order to overcome the difficulties encountered for joining high thickness steel sheets. This innovative process gathers two heat sources: an arc source developed by a MIG torch and a pre-located laser source. This coupling improves the efficiency of the process, the weld bead quality and the final deformations. The Level-Set approach for the modelling of this process enables the prediction of the weld bead development and the temperature field evolution. The simulation of the multi-passes welding of a 18MnNiMo5 steel grade is detailed and the results are compared to the experimental observations.

  4. Volatility of ruthenium during vitrification operations on fission products. part 1. nitric solutions distillation concentrates calcination. part 2. fixation on a steel tube. decomposition of the peroxide; Volatilite du ruthenium au cours des operations de vitrification des produits de fission. 1. partie distillation des solutions nitriques calcination des concentrats 2. partie fixation sur un tube d'acier decomposition du peroxyde

    Ortins de Bettencourt, A.; Jouan, A. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1969-07-01

    fission, un gros pourcentage de ruthenium initialement present dans ces solutions sous forme de nitrates de nitrosylruthenium est volatilise en donnant du peroxyde qui se decompose lui-meme en bioxyde de ruthenium. Ce travail a pour but l'etude de la volatilite du ruthenium au cours des procedes de vitrification : Durant la distillation des solutions nitriques, nous avons etudie en particulier l'influence sur la volatilite de la temperature, de la forme chimique du ruthenium introduit, du barbotage d'un gaz a travers la solution, de la concentration nitrique et de la concentration en nitrates. Durant la calcination, nous avons observe l'influence de la temperature, du temps, du debit et de la nature du gaz d'entrainement ainsi que l'action du bioxyde de ruthenium et de l'oxyde de fer sur la volatilite du ruthenium. Partie 2. Ce rapport concerne l'etude de la decomposition thermique du peroxyde de ruthenium, RuO{sub 4}, et de son depot sur les conduites en acier. Apres un rappel bibliographique des diverses proprietes de ce corps, nous etudions, dans une premiere partie, son depot sur un tube d'acier. Pour cela nous faisons passer un courant gazeux contenant du RuO{sub 4} marque au {sup 106}Ru dans un tube en acier inoxydable soumis a un gradient de temperature decroissant dans le sens du debit gazeux. Nous determinons la temperature a laquelle RuO{sub 4} se depose ou se fixe sur le tube et nous etudions l'influence de la vitesse des gaz sur ce depot. Dans une deuxieme partie nous essayons d'etudier par une methode statique la cinetique de la reaction de decomposition du peroxyde de ruthenium en son bioxyde: RuO{sub 4} {yields} RuO{sub 2} + O{sub 2}. Nous essayons pour cela d'introduire RuO{sub 4} gazeux dans un recipient place dans un four electrique et tentons de suivre l'evolution de la reaction par comptage {gamma}. (auteur)

  5. Effect of specimen orientation and welding on the fracture and fatigue properties of 2195 Al-Li alloy

    In view of the use of 2195 Al-Li alloy in the construction of super-light-weight external fuel tank of space shuttles, bulkheads of reusable single-stage-to-orbit launch vehicles and in combat ground vehicles, the dependence of tensile properties, fracture toughness and fatigue resistance of this alloy on the specimen orientation and welding is very important and was studied. The T8 base alloy, with primary strengthening precipitates of T1 (Al2CuLi) phase, contained mainly brass-type texture. After welding with AA 4043 filler alloy, the fusion zone (FZ) consisted of T (AlLiSi) phase and in the heat-affected zone (HAZ) T1 phase was replaced by TB (Al7Cu4Li) phase, and micro-cracks were observed. The post-weld heat treatment (PWHT) resulted in the spheroidization of primary T phase and the precipitation of more T particles in the FZ, and the dissolution of TB phase and the re-precipitation of T1 phase in the HAZ. The yield strength, fracture toughness and fatigue threshold of the 2195-T8 alloy was observed to depend on the specimen orientation, with the lowest values obtained at 45 deg. to the rolling direction. Welding resulted in a reduction in the tensile properties and fatigue strength. The post-weld heat treatment enhanced the yield strength, but no increase in fatigue strength was observed. Fracture mechanisms in various cases were evaluated by SEM examination of fracture surfaces and are discussed

  6. Georgia Maternal and Infant Health Research Group (GMIHRG): Mobilizing Allied Health Students and Community Partners to Put Data into Action.

    Zertuche, Adrienne D; Spelke, Bridget; Julian, Zoë; Pinto, Meredith; Rochat, Roger

    2016-07-01

    Purpose Despite having an obstetrician/gynecologist (ob/gyn) workforce comparable to the national average, Georgia is ranked 50th in maternal mortality and 40th in infant mortality. The Georgia Maternal and Infant Health Research Group (GMIHRG) was founded in 2010 to evaluate and address this paradox. Description In the several years since GMIHRG's inception, its graduate allied health student researchers and advisors have collaborated with community partners to complete several requisite research initiatives. Their initial work demonstrated that over half the Georgia areas outside metropolitan Atlanta lack adequate access to obstetric services, and their subsequent research evaluated the reasons for and the consequences of this maldistribution of obstetric providers. Assessment In order to translate their workforce and outcomes data for use in policymaking and programming, GMIHRG created reader-friendly reports for distribution to a wide variety of stakeholders and prepared concise, compelling presentations with targeted recommendations for change. This commitment to advocacy ultimately enabled them to: (a) inspire the Georgia Study Committees on Medicaid Reform and Medical Education, (b) influence Georgia General Assembly abortion bills, medical scholarship/loan legislation, and appropriations, and (c) motivate programming initiatives to improve midwifery education and perinatal regionalization in Georgia. Conclusion GMIHRG members have employed inventive research methods and maximized collaborative partnerships to enable their data on Georgia's maternal and infant outcomes and obstetric workforce to effectively inform state organizations and policymakers. With this unique approach, GMIHRG serves as a cost-efficient and valuable model for student engagement in the translation of research into advocacy efforts, policy change, and innovative programming. PMID:27072049

  7. Implementation of evidence-based practice across medical, nursing, pharmacological and allied healthcare professionals: a questionnaire survey in nationwide hospital settings

    2013-01-01

    Background Implementation of evidence-based practice (EBP) is regarded as core competence to improve healthcare quality. In the current study, we investigated the EBP of six groups of professionals: physicians, nurses, pharmacists, physical therapists, technicians, and other allied healthcare personnel. Methods A structured questionnaire survey of regional hospitals throughout Taiwan was conducted by post in 2011. Questionnaires were mailed to all healthcare workers of 11 randomly selected hospitals. Linear and logistic regression models were used to examine predictors for implementing EBP. Results In total, 6,160 returned questionnaires, including 645 from physicians, 4,206 from nurses, 430 from pharmacists, 179 from physical therapists, 537 from technicians, and 163 from other allied healthcare professionals, were valid for the analysis. Physicians and pharmacists were more aware of EBP than were the other professional groups (p < 0.001). Positive attitudes toward and beliefs in EBP were significantly lower among nurses than in the other groups (p < 0.001). Physicians had more sufficient knowledge and skills of EBP than did the other professionals (p < 0.001); in addition, they implemented EBP for clinical decision-making more often and perceived fewer personal barriers to EBP (p < 0.001). Multivariate logistic regression analyses showed that EBP implementation was associated with the following characteristics of participants: EBP training, having a faculty position, academic degree, one's profession, and perceptions (beliefs, attitudes, knowledge, skills and barriers). Conclusions This study depicts various levels of EBP implementation among medical, nursing, pharmacological, and allied healthcare personnel. There were significant differences in their implementation of EBP. We observed that certain factors were associated with EBP implementation, including personal backgrounds and perceptions toward EBP. The data suggest that strategies for

  8. Toward Better Collaboration in the Education of Students with Fetal Alcohol Spectrum Disorders: Integrating the Voices of Teachers, Administrators, Caregivers, and Allied Professionals

    Jenelle Marie Job

    2013-02-01

    Full Text Available This exploratory study addresses the call for an increased presence of key stakeholders’ perspectives in educational research involving students with Fetal Alcohol Spectrum Disorders (FASDs (Duquette, Stodel, Fullarton, & Hagglund, 2006a. Specifically, greater understandings are necessary to support the educational success of students with FASDs. The analysis of 11 focus groups and 3 interviews with teachers, administrators, caregivers, and allied professionals (total n = 60 revealed three themes: fostering relationships, reframing practices, and accessing supports. These findings have important implications for the use of a qualitaitve approach in generating evidenced-based educational practices for stakeholders reflective of enhanced communication and collaboration that better meet the needs of students with FASDs.

  9. Exploring the perspectives of allied health practitioners toward the use of journal clubs as a medium for promoting evidence-based practice: a qualitative study

    Kumar Saravana

    2011-09-01

    Full Text Available Abstract Background Research evidence suggests that journal clubs (JCs are one approach which can be used to bridge the gap between research and clinical practice. However, there are issues which potentially threaten their viability such as on-going participation or compliance with attendance, which require further exploration. The objectives of this study are: to explore the views and perspectives of allied health practitioners (AHPs regarding the use of any type of JC in promoting evidence-based practice (EBP; to identify ways in which an innovative model of JC developed by the International Centre for Allied Health Evidence (iCAHE might be refined. Methods A qualitative descriptive study utilising focus group interviews with various groups of AHP was undertaken-- those who have been exposed to the iCAHE JC model and those who have no experience of the iCAHE model (although they may have had exposure to other forms of JC. Maximum variation sampling was used to recruit participants for the study. Transcripts of focus groups were coded and distilled into content-related categories. Results Six focus groups with 39 AHPs were facilitated. Allied health practitioners perspectives' on JCs were classified in five broad categories: utility and benefits of a JC, elements of an effective and sustainable JC, barriers to participation, incentives for participation, and opportunities for improvement in the current iCAHE JC model. Overall, JCs were seen as a forum for reflective practice and keeping up-to-date with research evidence, and a venue for learning the processes involved in critical appraisal. Limited knowledge of statistics and heavy clinical workload were reported as barriers to participation in a JC. Strategies such as mentoring, strong support from managers, and providing CPD (continuing professional development points can potentially address these barriers. Opportunities for refinement of the current iCAHE model were raised. Conclusions This

  10. An investigation into the challenges facing the future provision of continuing professional development for allied health professionals in a changing healthcare environment

    This paper outlines current challenges facing healthcare providers and education providers in trying to ensure Allied Health Professionals (AHPs) are fit for practice, in a climate driven by financial constraints and service improvement directives from the Department of Health (DH). Research was undertaken in 2009 to investigate the current provision of Continuing Professional Development (CPD) in the southwest region of England. The purpose was to define exactly what problems existed with this provision, and to propose changes which could be implemented in order to ensure that the provision meets the needs of stakeholders in future years.

  11. The place and barriers of evidence based practice: knowledge and perceptions of medical, nursing and allied health practitioners in malaysia

    Lee Ming

    2010-11-01

    Full Text Available Abstract Background Despite a recent increase in activities to promote evidence-based practice (EBP, it was unclear how Malaysian hospital practitioners received this new approach in medicine. This study examines their confidence and perceptions on EBP. Findings We conducted cross-sectional surveys using a self-administered questionnaire during two EBP training courses in two Malaysian hospitals in January and June 2007. Our subjects (n = 144 were doctors and nursing and allied health staff (NAH participating in the EBP courses. Our questionnaire covered three domains: confidence and understanding (six items, attitude (five items and barriers to practice (four items. We presented simple descriptive statistics, including the sum ratings and the proportions with different responses for each item, and compared different groups using Mann-Whitney U test for scaled ratings and Chi-square test for dichotomous responses. Ninety-two doctors and 52 NAH staff completed the surveys. Overall, doctors expressed slightly higher confidence on EBP compared to NAH staff. Out of a maximum sum rating of 27 over six items, doctors reported an average of 18.3 (SD 3.2 and NAH staff reported an average of 16.0 (SD 3.4, p = 0.002. Doctors were also more positive in their views on EBP. For example, 67.4% of doctors disagreed, but 61% of NAH staff agreed that "the importance of EBP in patient care is exaggerated", and 79.3% of doctors disagreed, but 46.2% of NAH staff agreed that "EBP is too tedious and impractical". Similar responses were observed for other items in the domain. Doctors and NAH staff shared similar concerns on barriers to evidence-based practice. The highest proportions considered poor facilities to access evidence a barrier (76% of doctors and 90% of NAH, followed by poor awareness of evidence (62% of doctors and 70% of NAH and time constraints (63% of doctors and 68% of NAH, p = 0.09 for the combined rating of four items in the domain. Conclusions The

  12. Barriers and Facilitators to Research Use Among Allied Health Practitioners: A Mixed-Method Approach to Assessment

    Mary Dunne

    2011-01-01

    Full Text Available Objectives – The disparity between what is known to be effective and what is done in practice points to barriers to research use among health practitioners. Library and information services (LIS collect, organize and disseminate published research findings so they may be uniquely positioned to be of influence. This study aimed to identify barriers and facilitators to research use among allied health practitioners working in the alcohol and other drugs (AOD field in Ireland, and to explore the services, strategies, and resources that may help alleviate these issues.Methods – Three focus groups were held with AOD practitioners. A survey questionnaire was then sent by post to 175 counsellors. The survey included the Barriers to Research Utilization Scale (Barriers Scale (Funk et al. 1991, which assessed potential barriers from four factors: practitioner, setting, qualities of the research, and communication.Results – The number of responses was 71 (41%. All communication-related Barriers Scale items, and some items associated with the setting and practitioner, were perceived to be a moderate or great barrier by the majority of survey respondents. Similar issues were also raised in focus groups, where language, presentation, and time to engage with research were considered significant influences. Qualitative aspects of the study also revealed scepticism about research application and relevance.All proposed LIS were rated as moderate or great facilitators by the majority of respondents who expressed an opinion (those who choose “no opinion” or did not respond, 6–8%, were excluded.Conclusions – The high incidence of communication-related issues among top barriers and the enthusiasm expressed about proposed library services and training reveals the key role that LIS personnel can play in enabling practitioners to use research in practice. The addition of setting and practitioner factors indicates that a holistic, collaborative approach to

  13. Allying Our Markets

    2007-01-01

    The Hong Kong and Shanghai stock markets look for synergies Shanghai and Hong Kong, the two cities striving to be China’s financial center, are setting aside their competitive differ ences to discuss

  14. The ambivalent ally

    Menon, Anand

    1993-01-01

    My research examines the degree to which France was able to define an autonomous policy towards Nato in the period 1981-1992. In so doing, it addresses three central questions. What was the nature of French Alliance policy? To what extent did it prove capable of achieving the goals set for it by French policy makers? What constraints, if any, acted upon Alliance policy? My research, therefore, is intended to not only provide a detailed account of French Alliance policies, but a...

  15. Soudage par explosion thermique sous charge de cermets poreux à base de TiC-Ni sur substrat en acier-comportement tribologique Welding of porous TiC–Ni based cermets on substrate steel by thermal explosion under load-tribological behaviour

    Lemboub Samia

    2013-11-01

    Full Text Available Dans ce travail, nous nous intéressons à l'élaboration de cermets à base de TiC-Ni par dispersion de particules de carbures, oxydes ou borures dans une matrice de nickel, grâce à la technique de l'explosion thermique sous une charge de 20 MPa. La combustion de mélanges actifs (Ti-C-Ni-An où An = Al2O3, MgO, SiC, TiB2, WC, basée sur la réaction de synthèse de TiC (ΔHf298K = −184 kJ/mole, génère des cermets complexes. Un court maintien sous charge du cermet à 1373 K, après l'explosion thermique, permet son soudage sur un substrat en acier XC55. Les cermets obtenus dans ces conditions demeurent poreux et conservent une porosité de l'ordre de 25–35 %. La densité relative du cermet, sa dureté et son comportement tribologique, dépendront de la nature de l'addition dans les mélanges de départ. Porous TiC-Ni based cermets were obtained by dispersion of carbides, oxides or borides particles in a nickel matrix thanks to the thermal explosion technique realized under a load of 20 MPa. The combustion of active mixtures (Ti-C-Ni-An where An = Al2O3, MgO, SiC, TiB2 or WC based on the titanium carbide reaction synthesis (ΔHf = −184 kJ/mol, generates porous complex cermets. After the thermal explosion, a short maintenance under load at 1373 K of the combustion product, allows at the same time the cermets welding on a carbon steel substrate. The obtained cermets under these conditions preserve a porosity of about 25–35%. The relative density, hardness and tribological behaviour of the complex cermets depend on the additions nature (An in the starting mixtures.

  16. Curricular transformation of health professions education in Tanzania: the process at Muhimbili University of Health and Allied Sciences (2008-2011).

    Ngassapa, Olipa D; Kaaya, Ephata E; Fyfe, Molly V; Lyamuya, Eligius F; Kakoko, Deodatus C; Kayombo, Edmund J; Kisenge, Rodrick R; Loeser, Helen; Mwakigonja, Amos R; Outwater, Anne H; Martin-Holland, Judy; Mwambete, Kennedy D; Kida, Irene; Macfarlane, Sarah B

    2012-01-01

    Tanzania requires more health professionals equipped to tackle its serious health challenges. When it became an independent university in 2007, Muhimbili University of Health and Allied Sciences (MUHAS) decided to transform its educational offerings to ensure its students practice competently and contribute to improving population health. In 2008, in collaboration with the University of California San Francisco (UCSF), all MUHAS's schools (dentistry, medicine, nursing, pharmacy, and public health and social sciences) and institutes (traditional medicine and allied health sciences) began a university-wide process to revise curricula. Adopting university-wide committee structures, procedures, and a common schedule, MUHAS faculty set out to: (i) identify specific competencies for students to achieve by graduation (in eight domains, six that are inter-professional, hence consistent across schools); (ii) engage stakeholders to understand adequacies and inadequacies of current curricula; and (iii) restructure and revise curricula introducing competencies. The Tanzania Commission for Universities accredited the curricula in September 2011, and faculty started implementation with first-year students in October 2011. We learned that curricular revision of this magnitude requires: a compelling directive for change, designated leadership, resource mobilization inclusion of all stakeholders, clear guiding principles, an iterative plan linking flexible timetables to phases for curriculum development, engagement in skills training for the cultivation of future leaders, and extensive communication. PMID:23254850

  17. Investigation of Abnormal Grain Growth in a Friction Stir Welded and Spin-Formed Al-Li Alloy 2195 Crew Module

    Tayon, Wesley A.; Domack, Marcia S.; Hoffman, Eric K.; Hales, Stephen J.

    2013-01-01

    In order to improve manufacturing efficiency and reduce structural mass and costs in the production of launch vehicle structures, NASA is pursuing a wide-range of innovative, near-net shape manufacturing technologies. A technology that combines friction stir welding (FSW) and spin-forming has been applied to manufacture a single-piece crew module using Aluminum-Lithium (AL-Li) Alloy 2195. Plate size limitations for Al-Li alloy 2195 require that two plates be FSW together to produce a spin-forming blank of sufficient size to form the crew module. Subsequent forming of the FSW results in abnormal grain growth (AGG) within the weld region upon solution heat treatment (SHT), which detrimentally impacts strength, ductility, and fracture toughness. The current study seeks to identify microstructural factors that contribute to the development of AGG. Electron backscatter diffraction (EBSD) was used to correlate driving forces for AGG, such as stored energy, texture, and grain size distributions, with the propensity for AGG. Additionally, developmental annealing treatments prior to SHT are examined to reduce or eliminate the occurrence of AGG by promoting continuous, or uniform, grain growth

  18. Contribution to the study of physico-chemical properties of surfaces modified by laser treatment. Application to the enhancement of localized corrosion resistance of stainless steels; Contribution a l'etude des proprietes physico-chimiques des surfaces modifiees par traitement laser. Application a l'amelioration de la resistance a la corrosion localisee des aciers inoxydables

    Pacquentin, W.

    2011-11-25

    integrite sur des periodes de plus en plus longues. L'objectif de ce travail de these est d'evaluer le potentiel d'un traitement de refusion laser pour ameliorer la resistance a la corrosion d'un acier inoxydable de type 304L; l'utilisation du laser dans le domaine des traitements de surface constituant un procede en pleine evolution a cause des changements recents dans la technologie des lasers. Dans le cadre de ce travail, le choix du laser s'est porte sur un laser nano-impulsionnel a fibre dopee ytterbium dont les caracteristiques permettent la fusion quasiinstantanee sur quelques microns de la surface traitee, immediatement suivie d'une solidification ultra-rapide avec des vitesses de refroidissement pouvant atteindre 1011 K/s. La combinaison de ces processus favorise l'elimination des defauts surfaciques, la formation de phases hors equilibre, la segregation d'elements chimiques et la formation d'une nouvelle couche d'oxyde dont les proprietes sont gouvernees par les parametres laser. Afin de les correler avec la reactivite electrochimique de la surface, l'influence de deux parametres laser sur les proprietes physicochimiques de la surface a ete etudiee: la puissance du laser et le taux de recouvrement des impacts laser. Pour clarifier ces relations, la resistance a la corrosion par piquration des surfaces traitees a ete determinee par des tests electrochimiques. Pour des parametres laser specifiques, le potentiel de piquration d'un acier inoxydable de type 304L augmente de plus de 500 mV traduisant ainsi une meilleure tenue a la corrosion localisee en milieu chlorure. L'interdependance des differents phenomenes resultant du traitement laser a rendu complexe la hierarchisation de leur effet sur la sensibilite de l'alliage teste. Cependant, il a ete montre que la nature de l'oxyde thermique forme au cours de la refusion laser et ses defauts sont du premier ordre pour l'amorcage des

  19. The Mental Vitality @ Work study: design of a randomized controlled trial on the effect of a workers' health surveillance mental module for nurses and allied health professionals

    van Dijk Frank JH

    2011-05-01

    Full Text Available Abstract Background Employees in health care service are at high risk for developing mental health complaints. The effects of mental health complaints on work can have serious consequences for the quality of care provided by these workers. To help health service workers remain healthy and productive, preventive actions are necessary. A Workers' Health Surveillance (WHS mental module may be an effective strategy to monitor and promote good (mental health and work performance. The objective of this paper is to describe the design of a three arm cluster randomized controlled trial on the effectiveness of a WHS mental module for nurses and allied health professionals. Two strategies for this WHS mental module will be compared along with data from a control group. Additionally, the cost effectiveness of the approaches will be evaluated from a societal perspective. Methods The study is designed as a cluster randomized controlled trial consisting of three arms (two intervention groups, 1 control group with randomization at ward level. The study population consists of 86 departments in one Dutch academic medical center with a total of 1731 nurses and allied health professionals. At baseline, after three months and after six months of follow-up, outcomes will be assessed by online questionnaires. In both intervention arms, participants will complete a screening to detect problems in mental health and work functioning and receive feedback on their screening results. In cases of impairments in mental health or work functioning in the first intervention arm, a consultation with an occupational physician will be offered. The second intervention arm offers a choice of self-help e-mental health interventions, which will be tailored based on each individual's mental health state and work functioning. The primary outcomes will be help-seeking behavior and work functioning. Secondary outcomes will be mental health and wellbeing. Furthermore, cost-effectiveness in

  20. Summary Interim Report on Findings and Interim Themes from Phase 1 of the review of Allied Health Professions (AHP) support for children/young people with a statement of special educational needs (SEN)

    Public Health Agency

    2015-01-01

    Summary Interim Report on Findings and Interim Themes from Phase 1 of the review of Allied Health Professions (AHP) support for children/young people with a statement of special educational needs (SEN)This interim report is outlining the service principles agreed by the Project Board and the themes identified throughout engagement and information gathering.

  1. Aluminum alloys for ALS cryogenic tanks: Comparative measurements of cryogenic mechanical properties of Al-Li alloys and alloy 2219, February 1993

    Tensile and fracture toughness were obtained at cryogenic temperatures to compare the Al-Li alloys 8090, 2090, and WL049, and alloy 2219 in various tempers and specimen orientations. The strongest alloy at very low temperatures is WL049-T851, which is about 10 percent stronger than 2090-T81. Both alloys are considerably stronger than 2219-T87. Alloy 2090-T81 is tougher (about 50 percent) than WL049-T851 at low temperatures; the higher toughness is attributed to the presence of fewer constituent particles and the tendency to delaminate at low temperatures. The delamination divides the moving crack, thus separating it into smaller regions where plane stress (rather than plane strain) conditions are conducive to increased toughness

  2. Behavior of Growth and Coarsening of T1(Al2CuLi) Precipitates in Al-Li Alloys 2090 and 2090+Ce

    2001-01-01

    The behavior of growth and coarsening of T1(Al2CuLi) precipitates was comparatively studied by means of TEM technique in two Al-Li alloys 2090 and 2090+Ce (with cerium content less than 0.1% in mass fraction). Statistical analysis results show that T1 precipitates in alloy 2090+Ce have smaller aspect ratio, which is connected with the more intersections between different T1 variants in this alloy. It is also found that the variation of maximum length of T1 precipitates with aging time can be obviously divided into two stages of growth and coarsening. The diffusion coefficients of solute atoms of Cu and Li are calculated via growth kinetics curves of T1 precipitates. The results show that the diffusion of atom Cu plays a more important role in the formation of T1 precipitates.

  3. A PCA-based hyperspectral approach to detect infections by mycophilic fungi on dried porcini mushrooms (boletus edulis and allied species).

    Bagnasco, Lucia; Zotti, Mirca; Sitta, Nicola; Oliveri, Paolo

    2015-11-01

    Mycophilic fungi of anamorphic genus Sepedonium (telomorphs in Hypomyces, Hypocreales, Ascomycota) infect and parasitize sporomata of boletes. The obligated hosts such as Boletus edulis and allied species (known as "porcini mushrooms") are among the most valued and prized edible wild mushrooms in the world. Sepedonium infections have a great morphological variability: at the initial state, contaminated mushrooms present a white coating covering tubes and pores; at the final state, Sepedonium forms a deep and thick hyphal layer that eventually leads to the total necrosis of the host. Up to date, Sepedonium infections in porcini mushrooms have been evaluated only through macroscopic and microscopic visual analysis. In this study, in order to implement the infection evaluation as a routine methodology for industrial purposes, the potential application of Hyperspectral Imaging (HSI) and Principal Component Analysis (PCA) for detection of Sepedonium presence on sliced and dried B. edulis and allied species was investigated. Hyperspectral images were obtained using a pushbroom line-scanning HSI instrument, operating in the wavelength range between 400 and 1000 nm with 5 nm resolution. PCA was applied on normal and contaminated samples. To reduce the spectral variability caused by factors unrelated to Sepedonium infection, such as scattering effects and differences in sample height, different spectral pre-treatments were applied. A supervised rule was then developed to assign spectra recorded on new test samples to each of the two classes, based on the PC scores. This allowed to visualize directly - within false-color images of test samples - which points of the samples were contaminated. The results achieved may lead to the development of a non-destructive monitoring system for a rapid on-line screening of contaminated mushrooms. PMID:26452951

  4. Exercise physiologists emerge as allied healthcare professionals in the era of non-communicable disease pandemics: a report from Australia, 2006-2012.

    Cheema, Birinder S; Robergs, Robert A; Askew, Christopher D

    2014-07-01

    Exercise can be prescribed to prevent, manage, and treat many leading non-communicable diseases (NCDs) and underlying risk factors. However, surprisingly, Australia is one of only a few countries where allied healthcare professionals with specialized university education and training in exercise prescription and delivery provide services within a government-run healthcare system (Medicare). This article presents data on Medicare-funded services provided by accredited exercise physiologists (AEPs) from the inclusion of the profession in the allied healthcare model (January, 2006) to the end of 2012. We conceptualize these data in relation to current NCD trends, and outline recommendations that can potentially help curtail the current chronic disease burden through the further integration of exercise professionals into the healthcare system in Australia, and internationally. From 2006 to 2012, the number of AEPs in Australia has increased 563 %. This rise in AEPs has been paralleled by increased delivery of services for eligible patients with a chronic medical condition (+614 %), type 2 diabetes mellitus (+211 to 230 %), and of Aboriginal and Torres Strait Islander descent (+343 %). These trends, which were developed through the "early years" of the profession, are encouraging and suggest that AEPs have taken up a vital position within the healthcare system. However, the total number of services provided by AEPs currently remains very low in relation to the prevalence of overweight-obesity and type 2 diabetes in Australia. Furthermore, services for Aboriginal Australians are very low considering the extreme burden of chronic diseases in these vulnerable populations. We provide some recommendations that may help the exercise physiology profession play a greater role in tackling the NCD burden and shift the healthcare model in a direction that is more proactive and focused on disease prevention and health, including the early identification and treatment of major

  5. Beyond 50. challenges at work for older nurses and allied health workers in rural Australia: a thematic analysis of focus group discussions

    Depczynski Julie C

    2011-02-01

    Full Text Available Abstract Background The health workforce in Australia is ageing, particularly in rural areas, where this change will have the most immediate implications for health care delivery and workforce needs. In rural areas, the sustainability of health services will be dependent upon nurses and allied health workers being willing to work beyond middle age, yet the particular challenges for older health workers in rural Australia are not well known. The purpose of this research was to identify aspects of work that have become more difficult for rural health workers as they have become older; and the age-related changes and exacerbating factors that contribute to these difficulties. Findings will support efforts to make workplaces more 'user-friendly' for older health workers. Methods Nurses and allied health workers aged 50 years and over were invited to attend one of six local workshops held in the Hunter New England region of NSW, Australia. This qualitative action research project used a focus group methodology and thematic content analysis to identify and interpret issues arising from workshop discussions. Results Eighty older health workers from a range of disciplines attended the workshops. Tasks and aspects of work that have become more difficult for older health workers in hospital settings, include reading labels and administering medications; hearing patients and colleagues; manual handling; particular movements and postures; shift work; delivery of babies; patient exercises and suturing. In community settings, difficulties relate to vehicle use and home visiting. Significant issues across settings include ongoing education, work with computers and general fatigue. Wider personal challenges include coping with change, balancing work-life commitments, dealing with attachments and meeting goals and expectations. Work and age-related factors that exacerbate difficulties include vision and hearing deficits, increasing tiredness, more complex

  6. Important, misunderstood, and challenging: a qualitative study of nurses’ and allied health professionals’ perceptions of implementing self-management for patients with COPD

    Young HML

    2015-06-01

    Full Text Available Hannah ML Young,1 Lindsay D Apps,1 Samantha L Harrison,1 Vicki L Johnson-Warrington,1 Nicky Hudson,2 Sally J Singh1,3 1National Institute of Health Research CLAHRC-LNR Pulmonary Rehabilitation Research Group, University Hospitals of Leicester NHS Trust, 2School of Applied Social Sciences, De Montfort University, Leicester, 3Applied Research Centre in Health and Lifestyle Interventions, Coventry University, Coventry, UK Background: In light of the growing burden of COPD, there is increasing focus on the role of self-management for this population. Currently, self-management varies widely. Little is known either about nurses’ and allied health professionals’ (AHPs’ understanding and provision of self-management in clinical practice. This study explores nurses’ and AHPs’ understanding and implementation of supported COPD self-management within routine clinical practice. Materials and methods: Nurses and AHPs participated in face-to-face semistructured interviews to explore their understanding and provision of COPD self-management, as well as their perceptions of the challenges to providing such care. Purposive sampling was used to select participants from a range of professions working within primary, community, and secondary care settings. Three researchers independently analyzed each transcript using a thematic approach. Results: A total of 14 participants were interviewed. Nurses and AHPs viewed self-management as an important aspect of COPD care, but often misunderstood what it involved, leading to variation in practice. A number of challenges to supporting self-management were identified, which related to lack of time, lack of insight regarding training needs, and assumptions regarding patients’ perceived self-management abilities. Conclusion: Nurses and AHPs delivering self-management require clear guidance, training in the use of effective self-management skills, and education that challenges their preconceptions regarding

  7. Improving the care for people with acute low-back pain by allied health professionals (the ALIGN trial: A cluster randomised trial protocol

    Keating Jennifer L

    2010-11-01

    Full Text Available Abstract Background Variability between clinical practice guideline recommendations and actual clinical practice exists in many areas of health care. A 2004 systematic review examining the effectiveness of guideline implementation interventions concluded there was a lack of evidence to support decisions about effective interventions to promote the uptake of guidelines. Further, the review recommended the use of theory in the development of implementation interventions. A clinical practice guideline for the management of acute low-back pain has been developed in Australia (2003. Acute low-back pain is a common condition, has a high burden, and there is some indication of an evidence-practice gap in the allied health setting. This provides an opportunity to develop and test a theory-based implementation intervention which, if effective, may provide benefits for patients with this condition. Aims This study aims to estimate the effectiveness of a theory-based intervention to increase allied health practitioners' (physiotherapists and chiropractors in Victoria, Australia compliance with a clinical practice guideline for acute non-specific low back pain (LBP, compared with providing practitioners with a printed copy of the guideline. Specifically, our primary objectives are to establish if the intervention is effective in reducing the percentage of acute non-specific LBP patients who are either referred for or receive an x-ray, and improving mean level of disability for patients three months post-onset of acute LBP. Methods The design of the study is a cluster randomised trial. Restricted randomisation was used to randomise 210 practices (clusters to an intervention or control group. Practitioners in the control group received a printed copy of the guideline. Practitioners in the intervention group received a theory-based intervention developed to address prospectively identified barriers to practitioner compliance with the guideline. The

  8. 2013. aasta keeleteolised peavad pidu : Millised muutused meie keeleruumis rõõmu teevad ja millised mitte nii väga? / Reili Argus, Alli Laande, Teele Jakobson, Kristi Pettai ; intervjueerinud Aili Künstler

    2014-01-01

    Keeletegu 2013 kandidaadid vastavad küsimusele oma tegemiste ja meie keeleruumi olukorra kohta. Kandidaadiks on seatud TLÜ eesti keele professor Reili Argus lapse keelelist arengut toetavate mängude eest, Alli Laande "Mulgi sõnastiku" projektijuhina, lapsi teise Eesti kooli ja teise emakeelega peresse eesti keelt õppima viiva programmi VeniVidiVici looja ja eestvedaja Teele Jakobson ning Vastseliina gümnaasiumi direktor, Võrumaa noorte keelelaagri "Keelevarjud kirjanduses" korraldaja Kristi Pettai

  9. Effect of T6I6 and its modified processes on mechanical properties of novel high strength Al-Li alloy-2A97

    YUAN Zhi-shan; LU Zheng; XIE You-hua; WU Xiu-liang; DAI Sheng-long; LIU Chang-sheng

    2006-01-01

    Based on a novel high strength Al-Cu-Li-X alloy-2A97, the effect of T6I6 and its modified processes on the properties investigated by SEM and tensile test. The results show that when the alloy is heat treated by triple ageing, with secondary low temperature ageing at 80 ℃ after initial ageing at 155 and 150 ℃, and final re-ageing at 135 and 165 ℃, the tensile properties are close to the peak level of aged alloy in T6 temper. The addition of plastic deformation after and prior to secondary ageing favor the T1(Al2CuLi) and δ'(Al3Li) precipitation during final re-ageing at 135 and 165 ℃ corresponding to triple ageing, so the Al-Li alloy displays higher strength for the modified processes of T6I6. The microstructures consist of δ', T1 and θ"/θ' (Al2Cu) phase for single and triple aged alloy, the number density and volume fraction of δ' phase increase for T6I6 and its modified processes correspond to single ageing.

  10. Coarsening kinetics, thermodynamic properties, and interfacial characteristics of δ' precipitates in Al-Li alloys taking into account the Gibbs-Thomson effect

    The structure factor model of small-angle x-ray scattering (SAXS) analysis is validated herein by transmission electron microscopy (TEM) result regarding the volume fraction and size of δ' precipitates. The kinetic behaviors of the number density and volume fraction of δ' precipitates in Al-Li alloys during the coarsening stage are quantitatively investigated by SAXS. The results indicate that the conventional kinetic law must be replaced by a more general equation that incorporates the Gibbs-Thomson effect and the time-dependence of the volume fraction during Ostwald ripening. This work also proposes new methods that combine the Gibbs-Thomson effect and the traditional SAXS equation to resolve more reliably and model independently the interfacial energy, the concentration of solute Li in the α matrix in equilibrium with δ' particles of a nanoscale radius Cαr, the equilibrium solubility of the α phase Ceα and the equilibrium concentration of δ' particles. The Gibbs-Thomson effect considers the effects of the interfacial energy and particle size on the equilibrium concentration. This effect quantitatively clarifies that the Cαr value is size-dependent and is related to the Ceα value and the interfacial energy. The traditional SAXS equation determines the Li concentrations in the δ' particles and the matrix from the measured scattering contrast. The traditionally determined solubility is in fact the Cαr value and is mistakenly regarded as the equilibrium concentration Ceα (corresponding to the radius is infinite). These results are compared to other results obtained by SAXS, TEM, and calculation. The time evolution of the transition interfacial layers between δ' particles and the matrix is extensively investigated using SAXS

  11. A survey of adulterants used to cut cocaine in samples seized in the Espírito Santo State by GC-MS allied to chemometric tools.

    de Souza, Lindamara M; Rodrigues, Rayza R T; Santos, Heloá; Costa, Helber B; Merlo, Bianca B; Filgueiras, Paulo R; Poppi, Ronei J; Vaz, Boniek G; Romão, Wanderson

    2016-03-01

    Cocaine is a stimulant drug of the central nervous system (CNS) extracted from the leaves of Erytroxylum coca. It is defined as a tropane alkaloid containing 1R-(exo,exo)-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylic acid methyl esther. However, despite its defined composition, a wide variety of chemical additives are present in cocaine found in the illicit market, such as benzocaine, lidocaine, caffeine, procaine and phenacetin. In this work, 512 cocaine samples seized by the Civil Police of Espirito Santo state (PC-ES, Brazil) were analyzed by gas chromatography mass spectrometry (GC-MS) allied to principal component analysis (PCA) in order to classify the samples as a function of seizure year (2008, 2009, 2010, 2011 and 2012) and location (metropolitan, north, south and central). The cocaine content (wt.%) and its adulterants were also estimated. Analyzing the samples seized between 2008 and 2011, three sample sets are clearly grouped according to the degree of adulteration with caffeine and lidocaine: 100-50 wt.% of cocaine; 50-20 wt.% of cocaine; and 20-80 wt.% of lidocaine and 60-80 wt.% of caffeine, simultaneously. The last group is formed by samples seized between 2008 and 2009, which proves the higher degree of adulteration during this period. In 2012, higher cocaine content was observed for the 191 analyzed samples than in samples from previous years. The PCA data also suggests that the metropolitan region samples had a higher degree of adulteration than the state countryside samples. PMID:26976463

  12. 安徽的虫草及其相关真菌Ⅱ%The genus Cordyceps and its allies from Anhui Ⅱ

    仇飞; 张琪; 李春如; Spatafora Joey; 樊美珍; 李增智

    2012-01-01

    In this paper, 20 species of Cordyceps and its allies from some nature preserves in Anhui Province were reported as follows: Cordyceps brongniartii and its anamorph Beauveria brongniartii, C. cylindrica and its anamorph Nomuraea atypicola, Metacordyceps guniujiangensis and its anamorph Metarhizium aff. cylindro-sporum, Ophiocordyceps heteropoda var. langyashanensis and its anamorph Hirsutella heteropoda, O. mel-olonthae, O. odonatae, O. gryllotalpae, C, kusanagiensis and so on. Among them, O. melolonthae is a new record to China mainland and a minor error in original description of O. odonatae was revised. Specimens examined are deposited in Research Center on Entomogenous Fungi, Anhui Agricultural University (RCEFAAU).%对安徽省分布的布氏虫草Cordyceps brongniartii及其无性型布氏白僵菌Beauveria brongniartii、柱形虫草Cordyceps cylindrica及其无性型紫色野村菌Nomuraea atypicola、牯牛降异虫草Metacordyceps guniujiangensis及其无性型柱孢绿僵菌近似种Metarhizium aff.cylindrosporum、根足线虫草琅琊山变种Ophiocordyceps heteropoda var.langyashanensis及其无性型根足被毛孢Hirsutella heteropoda、腮金龟线虫草O.melolonthae、蜻蜓线虫草O.odonatae、蝼蛄线虫草(朝鲜虫草)O.gryllotalpae和草剃虫草Cordyceps kusanagiensis等20个虫草及其相关真菌种类重新整理发表,其中腮金龟虫草为中国大陆首次报道;同时,纠正了蜻蜓线虫草原始描述中的错误.鉴定标本保存在安徽农业大学虫生真菌研究中心(RCEFAAU).

  13. Chapitre VI. Le Creusot et l’acier Thomas

    Passaqui, Jean-Philippe

    2015-01-01

    Ainsi, quelques années seulement après la création d’un Domaine minier ambitieux, certains des gisements mis en valeur commencent à présenter des signes d’épuisement. Surtout, les innovations dans la métallurgie, la découverte du procédé Thomas notamment, se traduisent par une nouvelle définition de la politique minière et un renouvellement de la place des exploitations au sein de l’entreprise. Les orientations stratégiques qui accompagnent le déclin du Domaine minier posent aussi la question...

  14. Påvirkningen fra et brætspil - En trianguleret analyse af Axis & Allies påvirkning af dets spilleres holdninger til 2. verdenskrig og International Politik.

    Præstegaard, Mads Christian

    2015-01-01

    This master’s thesis is a product of 6½ years of study at Roskilde University, Denmark. The thesis researches popular culture within the subjects of History and Politics & Administration through a board game called Axis & Allies, made in the USA in the late 80’s. The master thesis’ main thesis is whether this board game in particular, can inflict changes in opinion regarding the players’ view of the history of the WWII and International Relations as a whole. The game itself is described as a ...

  15. Application of BW Water Base Quenching Liquid in Aluminum-ally Sheet Metal Component Quenching%BW水基淬火液在铝合金钣金件淬火中的应用

    绳小龙

    2012-01-01

    The research of application of BW water base quenching liquid in aluminum-ally was complicated,the aspects such as mechanical property,quenching deformation,intercrystalline corrosion when BW water base quenching liquid was did to aluminum-alloy were discussed.%介绍了BW水基淬火液在铝合金钣金件中的应用研究,对铝舍金采用BW水基淬火液淬火并时效后的力学性能、淬火变形、晶间腐蚀等方面进行了探讨.

  16. An Expressive Bodily Movement Repertoire for Marimba Performance, Revealed through Observers' Laban Effort-Shape Analyses, and Allied Musical Features: Two Case Studies

    Broughton, Mary C.; Davidson, Jane W.

    2016-01-01

    Musicians' expressive bodily movements can influence observers' perception of performance. Furthermore, individual differences in observers' music and motor expertise can shape how they perceive and respond to music performance. However, few studies have investigated the bodily movements that different observers of music performance perceive as expressive, in order to understand how they might relate to the music being produced, and the particular instrument type. In this paper, we focus on marimba performance through two case studies—one solo and one collaborative context. This study aims to investigate the existence of a core repertoire of marimba performance expressive bodily movements, identify key music-related features associated with the core repertoire, and explore how observers' perception of expressive bodily movements might vary according to individual differences in their music and motor expertise. Of the six professional musicians who observed and analyzed the marimba performances, three were percussionists and experienced marimba players. Following training, observers implemented the Laban effort-shape movement analysis system to analyze marimba players' bodily movements that they perceived as expressive in audio-visual recordings of performance. Observations that were agreed by all participants as being the same type of action at the same location in the performance recording were examined in each case study, then across the two studies. A small repertoire of bodily movements emerged that the observers perceived as being expressive. Movements were primarily allied to elements of the music structure, technique, and expressive interpretation, however, these elements appeared to be interactive. A type of body sway movement and more localized sound generating actions were perceived as expressive. These movements co-occurred and also appeared separately. Individual participant data revealed slightly more variety in the types and locations of actions

  17. Aerospace Avionics and Allied Technologies

    Jitendra R. Raol

    2011-07-01

    Full Text Available Avionics is a very crucial and important technology, not only for civil/military aircraft but also for missiles, spacecraft, micro air vehicles (MAVs and unmanned aerial vehicles (UAVs. Even for ground-based vehicles and underwater vehicles (UWVs, avionics is a very important segment of their successful operation and mission accomplishment. The advances in many related and supporting technologies, especially digital electronics, embedded systems, embedded algorithms/software, mobile technology, sensors and instrumentation, computer (network-communication, and realtime operations and simulation, have given a great impetus to the field of avionics. Here, for the sake of encompassing many other applications as mentioned above, the term is used in an expanded sense: Aerospace Avionics (AA, although it is popularly known as Aviation Electronics (or Avionics. However, use of this technology is not limited to aircraft, and hence, we  can incorporate all the three types-ground, land, and underwater vehicles-under the term avionics.Defence Science Journal, 2011, 61(4, pp.287-288, DOI:http://dx.doi.org/10.14429/dsj.61.1122

  18. Arms or Allies? / Imants Liegis

    Liegis, Imants

    2011-01-01

    Läti endine kaitseminister ei ole rahul sellega, et Euroopa Liitu ja NATO-sse kuuluv Prantsusmaa müüb Mistral-tüüpi laevu Venemaale ja leiab, et selliste otsuste tegemisel võiks arvestada teiste liikmesriikidega

  19. PALs for allies and adversaries

    Permissive action links (PAL) are electronic locks installed on certain nuclear weapons to preclude accidental or unauthorized use. These devices were developed and installed by the United States in some of its nuclear weapons deployed in Europe and elsewhere during the early 1960s PALs are important means of reducing the risk of nuclear war; however, despite this importance, there is a paucity of information in the open literature about the development and current deployment of permissive action links. In this paper, the author describes what permissive action links are, who has them, and present the pros and cons of sharing information about PALs, particularly in the European context

  20. Mother Earth: Ally or Adversary?

    Thorvaldur Gylfason

    2002-01-01

    Economic growth requires capital. This article reviews the relationship between economic growth around the world and six different kinds of capital: real capital; human capital; financial capital; foreign capital; social capital; and natural capital. Economic theory and empirical evidence suggest that domestic and foreign investment, education, financial maturity, and reasonable equality in the distribution of income are all good for growth. However, recent theory and evidence also seem to su...

  1. Centrifugal pumps and allied machinery

    Anderson, HH

    1994-01-01

    This book will be of vital interest to all engineers and designers concerned with centrifugal pumps and turbines. Including statistical information derived from 20000 pumps and 700 turbines with capacities of 5gpm to 5000000gpm, this book offers the widest range and scope of information currently available. Statistical analyses suggest practical methods of increasing pump performance and provide valuable data for new design aspects.

  2. The GATT: Menace or ally?

    The world's free-trade interests seem to be bent on expanding their commercial powers even if that means jeopardizing any conflicting environmental laws. This paper presents an overview of the linked economic/environmental of GATT, ranging from species protection to hazardous waste management. Included is a discussion of the possibilities of energy related technology transfers between countries such as solar photovoltaic cells. The key example used is the Tuna-Dolphin agreement shortcomings. Suggestions of how GATT can work with the environment in a wide variety of ways

  3. What Contributes to the Activeness of Ethnic Minority Patients with Chronic Illnesses Seeking Allied Health Services? A Cross-Sectional Study in Rural Western China

    Shangfeng Tang

    2015-09-01

    Full Text Available Actively seeking health services lies at the core of effective models of chronic disease self-management and contributes to promoting the utilization of allied health services (AHS. However, the use of AHS by ethnic minority Chinese, especially the elderly living in rural areas, has not received much attention. This study, therefore, aims to explore the association between personal characteristics and the activeness of ethnic minority patients with chronic diseases in rural areas of western China seeking AHS. A cross-sectional study was conducted to collect data on the socio-demographic and economic characteristics, health knowledge level and health communication channels of the sampled patients. A logistic regression model was used to examine the association of these predictors with the activeness of the surveyed patients in seeking AHS. A total of 1078 ethnic minorities over 45 years old who had chronic conditions were randomly selected from three western provinces in China and were interviewed in 2014. It is found that the New Cooperative Medical Scheme (NCMS is the most salient predictor affecting the activeness of Chinese ethnic minorities in seeking AHS. The probability is 8.51 times greater for those insured with NCMS to actively seek AHS than those without (95% Confidence Interval (CI 4.76–15.21; p < 0.001. Moreover, participants between 60 and 70 years old and those who have five to six household members are more likely to seek AHS compared with other social groups (Odds Ratio (OR = 1.64, 95% CI 1.28–2.97, p = 0.007; OR = 1.95, 95% CI 1.15–2.36, p = 0.002. However, the activeness of patients seeking AHS is lower for those who have better household economic conditions. Besides socio-demographic predictors, the Chinese ethnic minorities’ activeness in seeking AHS is clearly associated with the communication channels used for receiving health information, which include direct communication with doctors (OR = 5.18, 95% CI 3.58–7

  4. Evolución de la fricción interna del material compuesto de matriz Al-Li 8090 reforzado con partículas de SiC

    Gutiérrez-Urrutia, I.

    2001-04-01

    Full Text Available The present study has been undertaken to investigate the mechanism of thermal stress relief at the range of temperatures below room temperature for the metal matrix composite Al-Li 8090/SiC. For this aim the experimental technique of internal friction has been used which has been showed up very effective. Several thermal cycles from 453 K to 100 K were used in order to measure the internal friction as well as the elastic modulus of the material concluding that thermal stresses are relaxed by microplastic deformation around the reinforcements. It has been also related the variation in the elastic modulus with the different levels of precipitation.

    El presente trabajo investiga el mecanismo de relajación de tensiones térmicas a temperaturas por debajo de la de ambiente en el material compuesto Al-Li 8090/SiC. Para ello se ha empleado la técnica experimental de fricción interna que se ha mostrado la más eficaz para tal fin. Aplicando diferentes ciclos térmicos de 453 K a 100 K se midió tanto la fricción interna como el módulo elástico del material concluyendo que el mecanismo de relajación de tensiones térmicas es el de microdeformación plástica alrededor del reforzamiento. También se relaciona la variación del módulo elástico con los diferentes estadios de precipitación.

  5. Molecular phylogenetics, diversification, and systematics of Tibicen Latreille 1825 and allied cicadas of the tribe Cryptotympanini, with three new genera and emphasis on species from the USA and Canada(Hemiptera: Auchenorrhyncha: Cicadidae).

    Hill, Kathy B R; Marshall, David C; Moulds, Maxwell S; Simon, Chris

    2015-01-01

    North America has a diverse cicada fauna with multiple genera from all three Cicadidae subfamilies, yet molecular phylogenetic analyses have been completed only for the well-studied periodical cicadas (Magicicada Davis). The genus Tibicen Latreille, a large group of charismatic species, is in need of such work because morphological patterns suggest multiple groups with complicated relationships to other genera in the tribe Cryptotympanini. In this paper we present a molecular phylogenetic analysis, based on mitochondrial and nuclear DNA, of 35 of the 38 extant USA species and subspecies of the genus Tibicen together with their North American tribal allies (Cornuplura Davis, Cacama Davis), selected Tibicen species from Eurasia, and representatives of other Eurasian and Pacific cryptotympanine genera. This tree shows that Tibicen contains several well-supported clades, one predominating in eastern and central North America and related to Cryptotympana Stål and Raiateana Boulard, another in western North America related to Cacama and Cornuplura, and at least two clades in Eurasia. We also present a morphological cladistic analysis of Tibicen and its close allies based on 27 characters. Character states identified in the cladistic analysis define three new genera, two for North American taxa (Hadoa gen. n. and Neotibicen gen. n.) including several Mexican species, and one for Asian species (Subsolanus gen. n.). Using relaxed molecular clocks and literature-derived mtDNA rate estimates, we estimate the timeframe of diversification of Tibicen clades and find that intergeneric divergence has occurred since the late Eocene, with most extant species within the former Tibicen originating after the mid-Miocene. We review patterns of ecology, behavior, and geography among Tibicen clades in light of the phylogenetic results and note that the study of these insects is still in its early stages. Some Mexican species formerly placed in Tibicen are here transferred to Diceroprocta

  6. Covert Operation ``Sun God'' - History of German Solar Research in the Third Reich and Under Allied Occupation (German Title: Kommandosache ``Sonnengott'' - Geschichte der deutschen Sonnenforschung im Dritten Reich und unter alliierter Besatzung)

    Seiler, Michael P.

    Between 1939 and 1945 the Luftwaffe of the Third Reich invested large sums in solar research and the establishment of a chain of solar observatories under the code word “Sun God”. Observations of the different phenomena of solar activity were intended to allow a dependable daily prediction of the best frequency bands for long-range military radio. For the development of these research activities the Luftwaffe used a young astrophysicist, who - being the son of a well-known leftist publisher of the Weimar Republic - did appear not well suited to perform “war decisive research” for the Nazi regime: Karl-Otto Kiepenheuer (1910-1975). Circumventing the usual academic tenure, Hitler's war turned the barely thirty-year-old and up to then rather unsuccessful Kiepenheuer into an influential director of a research institution, which he was to remain for the next three decades as well. This book recounts the history of German solar research in the period 1939-1949, her entanglement with the crimes of the Nazi regime as well as her use by the Western Allies until the founding of the German Federal Republic.

  7. D’allié à ennemi. Stéréotypes et représentations du combattant russe dans les magazines illustrés français durant la Grande Guerre

    Joceline Chabot

    2011-05-01

    Full Text Available Les recherches récentes en histoire sociale et culturelle sur la Grande Guerre s’intéressent notamment à l’étude de la production littéraire, médiatique et iconographique comme pratique signifiante et représentative de l’expérience individuelle et collective de la guerre, ce que les historiens identifient comme les « cultures de guerres ». Ces « cultures de guerre » sont analysées, entre autres, à partir de la presse, dont la situation privilégiée au carrefour de l’opinion publique et de la propagande gouvernementale, en fait un objet d’étude significatif pour mieux comprendre la mobilisation des populations dans le cadre d’une guerre totale. À partir d’une approche interdisciplinaire, notre article a pour principal objectif de dégager et d’analyser les stéréotypes qui règlent les représentations de l’allié russe dans la presse illustrée française durant la Grande Guerre. Plus précisément, nous voulons interroger l’évolution des représentations de la figure du combattant russe afin de dégager dans quelle mesure il y a eu rupture ou permanence des représentations, en fonction de l’évolution du contexte historique entre 1914 et 1920.Recent research in the social and cultural history of the Great War views literary, media, and iconographic productions as a significant aspect of the individual and collective war experience, and scholars see these productions as forming « war cultures ». Historians analyze these « war cultures » partly through the press, which position at the crossroads of government propaganda and public opinion makes it an effective tool for understanding popular mobilization in the context of a total war. Through an interdisciplinary approach, this article aims to identify the stereotypes that governed representations of the Russian ally in the French illustrated press during the Great War. Specifically, we examine the evolution the representations of the Russian

  8. Proposed federal petroleum products and allied petroleum products storage tank systems regulations under CEPA 1999 : report of consultation sessions February 2003 to September 2003 : summary of input from participants and response from Environment Canada

    Between February and September of 2003, Environment Canada held a series of consultation sessions on a set of proposed regulations in order to eliminate the contamination of groundwater and soil caused by petroleum products and allied petroleum products stored by the federal house in storage tank systems. This document presents a summary of comments, issues, ideas and perspectives raised throughout consultation sessions. It also outlines Environment Canada's responses to generated input. Sessions took place in each of Environment Canada's five regions. A full description of the consultation procedures and methodology was provided. The document provides a rationale for cases where Environment Canada has rejected or only partially accepted stakeholder recommendations. A list of general prohibitions and obligations was provided along with details of registration and tagging; provincially-approved installers and installation procedures; monitoring and leak detection; operation and maintenance; upgrading; withdrawal, re-use and removal of storage tank systems; report of releases; and an environmental emergency plan and record keeping. First Nation issues were also discussed. Several changes to proposed regulations have been made during the course of the consultations, including an extension of timelines for compliance with proposed regulations; the definition of a storage tank system is now defined as the delivery point first connection to the discharge of the pump; and records are now required for only 7 years as opposed to the life of the tank. It was also stated that a draft regulation will be published in the Canadian Gazette, followed by a 60 day comment period. The final regulation will be published a few months later

  9. Paramètre critique de transition microphase dans une solution de polyélectrolytes faiblement chargés

    Benmouna, Mustapha

    1992-01-01

    The critical parameter for microphase transition of weakly charged polyelectrolyte solutions is obtained from the generalized spinodal equation. Examples of mixtures of charged homopolymers and charged copolymers are examined within a single unified description.

  10. Paramètre critique de transition de phase dans une solution de polyélectrolytes faiblement chargés

    Benmouna, Mustapha

    1993-01-01

    The critical parameter of phase transition in mixtures of weakly charged polyelectrolyte solutions is calculated from a generalization of the Random Phase Approximation. The compatibility enhancement due to electrostatic interactions is shown on simple examples of homopolymers and copolymers in solution.

  11. Une aberration statistique de phase pour la modélisation de la propagation ultrasonore en milieu faiblement inhomogène et aléatoire

    Lu, Bo; Darmon, Michel; Potel, Catherine

    2010-01-01

    L'objectif de ce travail est le calcul du champ ultrasonore rayonné par un transducteur immergé en milieu inhomogène. Cette étude s'inscrit dans le cadre du développement d'outils de simulation des techniques de surveillance des réacteurs nucléaires à sodium liquide. Premièrement, un modèle gaussien de turbulence thermique a été développé afin de générer des champs spatiaux de température et ensuite de célérité représentatifs de la situation rencontrée dans un réacteur à sodium liquide. Des m...

  12. Thermohydraulique des écoulements d'hélium faiblement supercritique en conduite application au refroidissement des écrans de faisceau du LHC

    Hatchadourian, E

    2000-01-01

    Au cours d'observations, au-delà de la mise en évidence d'un effet inattendu, l'effort de compréhension porte tout d'abord vers une description qualitative du phénomène et ensuite quantitative. Puis, lorsque ce phénomène est compris, le travail peut s'orienter vers une étape d'exploitation o le mécanisme est utilisé pour développer de nouvelles voies de recherche ou encore apporter des solutions à des besoins d'ordre technologique. L'étude établie sur le projet du futur collisionneur de particules du CERN en est un exemple convaincant : il s'agit dans un premier temps de définir un modèle simplifié sur l'écoulement d'hélium supercritique dans des tubes soumis à des apports de chaleur, afin de permettre la compréhension des mécanismes essentiels puis developper un modèle plus précis, mais également plus complet, pour l'étude quantitative. L'application directe de cette étude thermohydraulique concerne le refroidissement des écrans de faisceau du LHC. Ces écrans, maintenus à une te...

  13. 三联注射治疗86例膝关节骨性关节炎的临床观察%Clinical observation on treating 86 cases of KOA with three allied injection

    孙飞; 周斌

    2012-01-01

      Objective: To observe the clinical effect of Three allied injection composed of intra-articular ozone water flushing, injection of ozone, ozone water acuppoint injection in treating Knee Osteoarthritis (KOA). Methods: 86 cases of patients suffering osteoarthritis in the knee joint were randomly selected. The joint cavity was washed with ozone water, then ozone injection and ozone water point injection were performed inside joint cavity, once a week, for four weeks. The clinical effects were evaluated before and after treatment. Results: Significant difference was detected by visual analogue scales before and after treatment. The fineness rate of knee joint function was 91,86%. Conclusion: Intra-articular ozone water flushing, ozone injection and ozone water injection treatment was effective in treating KOA. It can relieve joint pain and improve joint mobility, and it is low in price, easy to perform and promote, with no medicine resistance and little side effects, and with many other advantages.%  目的:观察关节腔内臭氧水冲洗、臭氧注射、臭氧水穴位注射三联疗法治疗膝关节痛的临床疗效.方法:随机选86例患有膝关节骨性关节炎的患者,关节腔内臭氧水冲洗后行关节腔内臭氧注射、臭氧水穴位注射,1周1次,连续治疗四周.分别在治疗前、疗程结束后对治疗效果进行评价.结果:患者治疗前后视觉模拟评分法(VAS)对比,差异有统计学意义,膝关节功能评定优良率达91.86%.结论:关节腔内臭氧水冲洗、臭氧注射、臭氧水穴位注射是一种治疗膝关节骨性关节炎的有效方法,能够解除关节疼痛,改善关节活动度,并且价格低廉,技术易掌握和推广,且没有耐药性,副作用少,危险性小,具有许多其他方法所不具备的优点.

  14. A study protocol of a randomised controlled trial incorporating a health economic analysis to investigate if additional allied health services for rehabilitation reduce length of stay without compromising patient outcomes

    Peiris Casey

    2010-11-01

    alongside the randomised controlled trial. Discussion This paper outlines the study protocol for the first fully powered randomised controlled trial incorporating a health economic analysis to establish if additional Saturday allied health services for rehabilitation inpatients reduces length of stay without compromising discharge outcomes. If successful, this trial will have substantial health benefits for the patients and for organizations delivering rehabilitation services. Clinical trial registration number Australian and New Zealand Clinical Trials Registry ACTRN12609000973213

  15. Worms,Your Unlikely Allies etc

    2012-01-01

    Back in the Stone Age,humans had to put up with all sorts of creepy crawlies.Parasites - organisms that live on or in another organism - lingered inside our bodies,living off of our blood.Because internal parasites go mostly unnoticed,they were able to keep living with humans.People can survive a long time with tiny parasitic worms in their intestines.

  16. Assurance of U.S. Allies

    Center on Contemporary Conflict

    2013-01-01

    FY 2013-2014. Project Lead: Ralph Cossa & Brad Glosserman Japan and South Korea_s (ROK) concerns about the reliability of the U.S. deterrent are increased by Chinese nuclear modernization and the North Korea nuclear weapons development program. As the United States embraces defense realignment and moves to reduce its nuclear stockpile, Japanese and South Korean thinking about extended deterrence is profoundly affected. It is increasingly important for the United States to assure its allian...

  17. Measuring the impact of allied health research

    Grimmer-Somers, Karen

    2011-01-01

    Jan Heath, Karen Grimmer-Somers, Steve Milanese, Susan Hillier, Ellena King, Kylie Johnston, Kylie Wall, Olivia Thorpe, Alexandra Young, Saravana KumarSchool of Health Sciences, University of South Australia, Adelaide, SA, AustraliaBackground: Excellence in Research for Australia (ERA) rankings are given to academic journals in which Australian academics publish. This provides a metric on which Australian institutions and disciplines are ranked for international competitiveness. This paper ex...

  18. Hopes for Intergroup Dialogue: Affirmation and Allies

    Dessel, Adrienne; Bolen, Rebecca; Shepardson, Christine

    2012-01-01

    This article is an invited response to "Toward a Learning Environment That Supports Diversity and Difference: A Response to Dessel, Bolen, and Shepardson," by David R. Hodge ("Journal of Social Work Education," 47(2), pp. 235-251). The authors agree with a number of Hodge's recommendations. First, they support Hodge's recommendation to use common…

  19. Carotenoids: potential allies of cardiovascular health?

    Maria Alessandra Gammone

    2015-02-01

    Full Text Available Carotenoids are a class of natural, fat-soluble pigments found principally in plants. They have potential antioxidant biological properties because of their chemical structure and interaction with biological membranes. Epidemiologic studies supported the hypothesis that antioxidants could be used as an inexpensive means of both primary and secondary cardiovascular disease (CVD prevention. In fact, the oxidation of low-density lipoproteins (LDL in the vessels plays a key role in the development of atherosclerotic lesions. The resistance of LDL to oxidation is increased by high dietary antioxidant intake, so that carotenoids, as part of food patterns such as the Mediterranean diet, may have beneficial effects on cardiovascular health too. Further properties of carotenoids leading to a potential reduction of cardiovascular risk are represented by lowering of blood pressure, reduction of pro-inflammatory cytokines and markers of inflammation (such as C-reactive protein, and improvement of insulin sensitivity in muscle, liver, and adipose tissues. In addition, recent nutrigenomics studies have focused on the exceptional ability of carotenoids in modulating the expression of specific genes involved in cell metabolism. The aim of this review is to focus attention to this effect of some carotenoids to prevent CVD.

  20. ZnO nanocrystals and allied materials

    Okada, Tatsuo

    2014-01-01

    ZnO has been the central theme of research in the past decade due to its various applications in band gap engineering, and textile and biomedical industries. In nanostructured form, it offers ample opportunities to realize tunable optical and optoelectronic properties and it was also termed as a potential material to realize room temperature ferromagnetism. This book presents 17 high-quality contributory chapters on ZnO related systems written by experts in this field. These chapters will help researchers to understand and explore the varied physical properties to envisage device applications of ZnO in thin film, heterostructure and nanostructure forms.

  1. SCRUB versus trade: Enemies or allies?

    Under the 1990 Clean Air Act Amendments (CAAA), scrubbing and emission allowance trading will play complementary roles. This paper reviews Phase I announced strategies and presents projections of technology controls, coal switching and industry-wide SO2 removal costs under different assumptions about trading. The principal uncertainties characterizing today's planning environment are discussed -- ranging from changing expectations for fuel costs to swings in allowance prices and questions about regulation and new operating procedures. Economic forecasting is difficult. A clearer picture of Phase 2 strategies is emerging from EPRI's integrated analysis of fuel, technology and allowance markets -- based on collaboration between A. Van Horn and K. White (management consultants) and T. Hewson (Energy Ventures Analysis). About half the SO2 reductions required in Phase 2 are likely to come from technology controls and half from coal switching. With trading, the highest cost open-quotes scrubsclose quotes and open-quotes switchesclose quotes can be avoided, more upgrading of low-cost scrubbing is expected, and the role of switching grows to a small extent. Additional benefits from trading, averaging and banking allowances are: better sequencing of technology controls, less stringent specs for equipment, and added flexibility/risk-sharing opportunities in contract arrangements

  2. Alternating Wenckebach periods and allied arrhythmias.

    Castellanos, A; Interian, A; Cox, M M; Myerburg, R J

    1993-12-01

    Alternating Wenckebach periods (AWPs) are episodes of 2:1 block during which the PR, AH, or AV intervals of the conducted beats gradually increase until a greater degree of block ensues. Most episodes occur at the AV node, but some have also been reported in other structures. AWPs are usually attributed to multilevel block due to transverse (horizontal) dissociation. This assumption was initially based on a method in which the solutions to difficult electrocardiographic rhythms were arrived at by analysis and deduction based on the knowledge existing at that particular time. Subsequently, it was reinforced by information extrapolated from intracardiac recordings performed in patients with documented multilevel block in separate anatomical structures (atria, AV node, and His bundle), as well as from microelectrode studies and computer simulations. Although AWPs are frequently observed in clinical tracings, those occurring at the AV node are best categorized during incremental atrial stimulation because then they occupy a specific point in the wide spectrum of tachycardia dependent AV nodal conduction disturbances. In fact, the A:H ratios occurring in the episodes where the degree of block increases can be represented by "universal" mathematical formulas. However, in the clinical setting, drugs affecting the electrophysiology of the node can alter the pacing induced symmetry by producing additional differential effects on the various levels. The latter still requires further elucidation. PMID:7508606

  3. Thermal fatigue cracking of austenitic stainless steels; Fissuration en fatigue thermique des aciers inoxydables austenitiques

    Fissolo, A

    2001-07-01

    This report deals with the thermal fatigue cracking of austenitic stainless steels as AISI 316 LN and 304 L. Such damage has been clearly observed for some components used in Fast Breeder reactors (FBR) and Pressure Water Reactor (PWR). In order to investigate thermal fatigue, quasi-structural specimen have been used. In this frame, facilities enforcing temperature variations similar to those found under the operation conditions have been progressively developed. As for components, loading results from impeded dilatation. In the SPLASH facility, the purpose was to establish accurate crack initiation conditions in order to check the relevance of the usual component design methodology. The tested specimen is continuously heated by the passage of an electrical DC current, and submitted to cyclic thermal down shock (up to 1000 deg C/s) by means of periodical spraying of water on two opposite specimen faces. The number of cycles to crack initiation N{sub i} is deduced from periodic examinations of the quenched surfaces, by means of optical microscopy. It is considered that initiation occurs when at least one 50{mu}m to 150{open_square}m long crack is observed. Additional SPLASH tests were performed for N >> N{sub i}, with a view to investigate the evolution of a surface multiple cracking network with the number of cycles N. The CYTHIA test was mainly developed for the purpose of assessing crack growth dynamics of one isolated crack in thermal fatigue conditions. Specimens consist of thick walled tubes with a 1 mm circular groove is spark-machined at the specimen centre. During the test, the external wall of the tube is periodically heated by using a HF induction coil (1 MHz), while its internal wall is permanently cooled by flowing water. Total crack growth is derived from post-mortem examinations, whereby the thermal fatigue final rupture surface is oxidized at the end of the test. The specimen is broken afterwards under mechanical fatigue at room temperature. All the tests confirm that usual approaches are adapted in used conditions ( 280 {<=} T{sub max} {<=} 550 deg C, 100 {<=} {open_square}T {<=} 300 deg C): they are simply based on thermal loading mechanical loading equivalence. However, they appear not to be well adapted when additional factors exist such as roughness, residual stresses... Furthermore, Scanning Electron Microscopy observations show that damage is initiated well before the 'engineer initiation', as previously detected using optical microscopy on SPLASH specimen. First stage damage evolutions are thus a new task. Strain and stress fields generated during test are estimated thanks to finite element method computations (FEM), using CASTEM-2000 CEA software. Information coming from these FEM computations monitor lower-scale modelling: Discrete dislocation Dynamics (MICROMEGAS software). In order to continue that task, a new specimen has been adapted to the CYTHIA facility. Specimens consist of removable disks in which different and well-controlled conditions may be enforced. In order to estimate propagation of long crack, conventional fracture mechanic approach seems to be well adapted. The effective Stress Intensity Factor calculation takes into account of plastic strain. Furthermore, it is assumed that crack is opened during 60 % of cyclic loading. Shielding effect is clearly underlined by all the observations: on surface, on cross side section, and after sub-surface step-by-step removal. Multiple crack propagation (in the depth direction) is simulated using the previous single crack modelling. An auto-adaptative meshing allows simulating growth of 10 cracks up to 35,000 cycles. Two-development tasks are now in progress. The first task is oriented on the multiple crack growth and stability after an additional mechanical loading. The second task deals with the first damage stage up to the 'engineer crack initiation'. (author)

  4. Stainless steels and special grades for specific applications; Aciers inoxydables et nuances speciales pour applications specifiques

    Dupoiron, F.; Verneau, M. [Societe des Forges et Ateliers du Creusot (SFAC), 75 - Paris (France)

    1994-12-31

    The development of special steels grades with a composition between stainless steels and nickel alloys for localised corrosion resistance applications (steam condenser, combustion products de-pollution...) are shortly presented by family (austenitic and super-austenitic stainless steels of the URANUS family with or without nitrogen additions, austeno-ferritic steels), with electrochemistry corrosion tests evaluation : in standard medium (30 g/l NaCl + 6% FeCl{sub 3}) or in real medium. (A.B.). 6 refs., 12 figs., 2 tabs.

  5. Modélisation numérique du soudage à l'arc des aciers

    Hamide, Makhlouf

    2008-01-01

    Le soudage est un moyen d'assemblage très utilisé dans l'industrie. Disposer d'un logiciel de simulation permettrait d'évaluer les contraintes résiduelles et d'obtenir des informations sur la microstructure du joint de soudure, nécessaires à l'analyse de sa tenue mécanique; mais aussi d'évaluer la faisabilité du procédé pour la réalisation de pièces complexes et d'optimiser les séquences de soudage pour minimiser les défauts. Cette thèse porte sur le développement d'un outil de simulation num...

  6. Forgeabilité des aciers inoxydables austéno-ferritiques

    Martin, Guilhem

    2011-01-01

    The Duplex Stainless Steels (DSS) are defined as a family of stainless steels consisting of a two-phase microstructure involving ä-ferrite and ã-austenite. Exceptional combinations of strength and toughness together with good corrosion resistance under critical working conditions designate DSS a suitable alternative to conventional austenitic stainless steels. Unfortunately, the relatively poor hot workability of these alloys makes the industrial processing of flat products particularly criti...

  7. New steels for fossil-fired power plants; De nouveaux aciers pour les centrales thermiques classiques

    Prunier, V.

    1996-10-01

    Most utilities are determined to enhance the efficiency of their fossil-fired power plants. Related industrial firms are showing an increasing interest in what are known as `supercritical` or `ultra-supercritical` power plants. In these new plants, efficiency is enhanced by increasing the steam temperature and pressure. Conditions aimed at are as follows: T {approx} 580-600 deg and P {approx} 250 bar for supercritical and T {approx} 650 deg C and P {approx} 300-350 bar for ultra-supercritical. Main limiting factors for increasing efficiency are unquestionably related to materials. The new creep, fatigue and corrosion requirements call for substantial research, ensuring that new grades of alloys are regularly propose. The relevance for EDF of higher efficiency plants has led us to define a work program aimed at better acquaintance with materials which could be used in such installations. These materials are also interesting in older plants, where they would enable the thickness of major components to be considerably reduced. The present document is a bibliographical study in two parts. We first present the main alloys suitable for the manufacture of components subjected to creep, thermal fatigue or corrosion in fossil-fired power plants. We identify in particular the first steel grades used in former plants and those recently developed for improved efficiency supercritical or ultra-supercritical plants. We then give details on the main mechanical and structural properties of the eight most interesting alloys: 2.25Cr-1Mo steel, most frequently encountered in operating plants; HCM2S steel, used for the manufacture of water panels tubes without post welding heat treatment; modified 9 Cr-1Mo steel, the international reference for thick components; NF616, HCM12A and NF12 steels for thick components in improved efficiency plants; TP347HFG and NF709 steels for tubes in improved efficiency plants. (author) 40 refs.

  8. Mod\\'elisation multidomaine du comportement magn\\'eto-m\\'ecanique des aciers dual-phases

    Mballa, Frederick Mballa; Hubert, Olivier; Lazreg, Said; Meilland, Philip

    2011-01-01

    The microstructure and mechanical behavior of dual-phase steels are highly sensitive to the variation of the process (heat treatments). Online control by magnetic method is relevant. A measurement under applied stress must be considered. The dual-phase is a two-phase medium (ferrite / martensite). Each phase can be considered as a sphere embedded in a homogeneous equivalent medium. The model used for each phase is based on a magneto-mechanical coupled model. This is an explicit single crystal...

  9. Mod\\'elisation multidomaine du comportement magn\\'eto-m\\'ecanique des aciers dual-phases

    Mballa, Frederick Mballa; Lazreg, Said; Meilland, Philip

    2011-01-01

    The microstructure and mechanical behavior of dual-phase steels are highly sensitive to the variation of the process (heat treatments). Online control by magnetic method is relevant. A measurement under applied stress must be considered. The dual-phase is a two-phase medium (ferrite / martensite). Each phase can be considered as a sphere embedded in a homogeneous equivalent medium. The model used for each phase is based on a magneto-mechanical coupled model. This is an explicit single crystalline model representative of the behavior of the corresponding phase. Localization rules allow the simulation of the two-phases medium. Experiments and modeling are compared.

  10. Statistique des extrêmes dans les bassins faiblement jaugés : application d'un modèle global pluie-débit à cinq bassins versants en région wallonne (Belgique

    Debauche O.

    2008-01-01

    Full Text Available Statistics of extremes in poorly gauged basins: application of a lumped rainfall-runoff model in five catchments area in Walloon region (Belgium. The RS-PDM© model generates flows in time series on the basis of observed rainfall after self-calibration which is based on short period of observed rainfall and flow. This is done with daily or hourly data. The study highlights the capacity of the RS-PDM© model to simulate extreme flows in poorly gauged basins in Walloon region on the basis of observed rains and of a short period of observed flows. Concerning the time series, it was highlighted an important dispersion of the flows simulated for a given observed flow even for daily or hourly data. The Nash criteria varied between 0.59 and 0.92. However, the flows simulated via RS-PDM© make it possible to adjust a statistical distribution of extremes flows (Gumbel law close to the statistic obtained with a long period of gauging. So, if the simulations realized by mean of this model present poor to acceptable performances concerning the time series simulations, they permit to obtain rapidly quite good statistics of extremes flows on the basis of a short gauging period.

  11. Naturalism and the social model of disability: allied or antithetical?

    Sisti, Dominic A

    2015-07-01

    The question of how disability should be defined is fraught with political, ethical and philosophical complexities. The social model of disability, which posits that disability is socially and politically constructed and is characterised by systemic barriers, has enjoyed broad acceptance that is exemplified by the slow but steady progress in securing civil rights for persons with disabilities. Yet, there remains a palpable tension between disability studies scholars and activists and bioethicists. While philosophers and bioethicists should heed the theories developed from the standpoint of persons with disabilities, disability activists should acknowledge the possibility that philosophical theories about the basic reality of disease, illness, health, function and impairment offer a more steady foundation for social or political critiques of disability. I argue that naturalistic theories of function and dysfunction provide a valuable starting point to clarify questions about the broader concept of disability. A naturalist theory of function may serve as the core of the concept of disability and provide disability scholars and bioethicists alike a stronger set of arguments in analysing real or potential instances of disability. PMID:25341736

  12. Expanding color design methods for architecture and allied disciplines

    Linton, Harold E.

    2002-06-01

    The color design processes of visual artists, architects, designers, and theoreticians included in this presentation reflect the practical role of color in architecture. What the color design professional brings to the architectural design team is an expertise and rich sensibility made up of a broad awareness and a finely tuned visual perception. This includes a knowledge of design and its history, expertise with industrial color materials and their methods of application, an awareness of design context and cultural identity, a background in physiology and psychology as it relates to human welfare, and an ability to problem-solve and respond creatively to design concepts with innovative ideas. The broadening of the definition of the colorists's role in architectural design provides architects, artists and designers with significant opportunities for continued professional and educational development.

  13. Chemotaxonomy of Veroniceae and its allies in the Plantaginaceae

    Taskova, Rilka Mladenova; Gotfredsen, Charlotte Held; Jensen, Søren Rosendal

    2006-01-01

    In a chemosystematic investigation of tribe Veroniceae (Plantaginaceae), representatives of Camptoloma, Sibthorpia, Veronica subg. Pentasepalae and subg. Hebe, Veronicastrum, Wulfenia, and the related Ellisiophyllum and Globularia were examined for non-flavonoid glycosides. From the 14 species...... studied, 28 different iridoid glucosides and ten caffeoyl phenylethanoid glucosides (CPGs), as well as salidroside and arbutin were isolated and characterized by NMR; of these, five compounds were previously unknown. It was found that the representatives of Veroniceae, as well as Globularia, were......-O-rhamnopyranosylcatalpol; a CPG, hebeoside (2'-b-xylopyranosyl-verbascoside) was isolated from V. (Hebe) salicifolia. The two species of Veronicastrum also contained 6-O-rhamnopyranosylcatalpol esters, including the previously unknown 2'',3''- and 3'',4''-dicinnamoyl derivatives and, in contrast to...

  14. Phylogenetic and morphotaxonomic revision of Ramichloridium and allied genera

    Arzanlou, M.; Groenewald, J.Z.; Gams, W.; Braun, U.; Shin, H.-D.; Crous, P.W.

    2007-01-01

    The phylogeny of the genera Periconiella, Ramichloridium, Rhinocladiella and Veronaea was explored by means of partial sequences of the 28S (LSU) rRNA gene and the ITS region (ITS1, 5.8S rDNA and ITS2). Based on the LSU sequence data, ramichloridium-like species segregate into eight distinct clusters. These include the Capnodiales (Mycosphaerellaceae and Teratosphaeriaceae), the Chaetothyriales (Herpotrichiellaceae), the Pleosporales, and five ascomycete clades with uncertain affinities. The ...

  15. Phylogenetic and morphotaxonomic revision of Ramichloridium and allied genera.

    Arzanlou, M; Groenewald, J Z; Gams, W; Braun, U; Shin, H-D; Crous, P W

    2007-01-01

    The phylogeny of the genera Periconiella, Ramichloridium, Rhinocladiella and Veronaea was explored by means of partial sequences of the 28S (LSU) rRNA gene and the ITS region (ITS1, 5.8S rDNA and ITS2). Based on the LSU sequence data, ramichloridium-like species segregate into eight distinct clusters. These include the Capnodiales (Mycosphaerellaceae and Teratosphaeriaceae), the Chaetothyriales (Herpotrichiellaceae), the Pleosporales, and five ascomycete clades with uncertain affinities. The type species of Ramichloridium, R. apiculatum, together with R. musae, R. biverticillatum, R. cerophilum, R. verrucosum, R. pini, and three new species isolated from Strelitzia, Musa and forest soil, respectively, reside in the Capnodiales clade. The human-pathogenic species R. mackenziei and R. basitonum, together with R. fasciculatum and R. anceps, cluster with Rhinocladiella (type species: Rh. atrovirens, Herpotrichiellaceae, Chaetothyriales), and are allocated to this genus. Veronaea botryosa, the type species of the genus Veronaea, also resides in the Chaetothyriales clade, whereas Veronaea simplex clusters as a sister taxon to the Venturiaceae (Pleosporales), and is placed in a new genus, Veronaeopsis. Ramichloridium obovoideum clusters with Carpoligna pleurothecii (anamorph: Pleurothecium sp., Chaetosphaeriales), and a new combination is proposed in Pleurothecium. Other ramichloridium-like clades include R. subulatum and R. epichloës (incertae sedis, Sordariomycetes), for which a new genus, Radulidium is erected. Ramichloridium schulzeri and its varieties are placed in a new genus, Myrmecridium (incertae sedis, Sordariomycetes). The genus Pseudovirgaria (incertae sedis) is introduced to accommodate ramichloridium-like isolates occurring on various species of rust fungi. A veronaea-like isolate from Bertia moriformis with phylogenetic affinity to the Annulatascaceae (Sordariomycetidae) is placed in a new genus, Rhodoveronaea. Besides Ramichloridium, Periconiella is also polyphyletic. Thysanorea is introduced to accommodate Periconiella papuana (Herpotrichiellaceae), which is unrelated to the type species, P. velutina (Mycosphaerellaceae). PMID:18490996

  16. Phylogenetic and morphotaxonomic revision of Ramichloridium and allied genera

    Arzanlou, M.; Groenewald, J.Z.; Gams, W.; Braun, U.; Shin, H.-D; Crous, P.W.

    2007-01-01

    The phylogeny of the genera Periconiella, Ramichloridium, Rhinocladiella and Veronaea was explored by means of partial sequences of the 28S (LSU) rRNA gene and the ITS region (ITS1, 5.8S rDNA and ITS2). Based on the LSU sequence data, ramichloridium-like species segregate into eight distinct clusters. These include the Capnodiales (Mycosphaerellaceae and Teratosphaeriaceae), the Chaetothyriales (Herpotrichiellaceae), the Pleosporales, and five ascomycete clades with uncertain affinities. The type species of Ramichloridium, R. apiculatum, together with R. musae, R. biverticillatum, R. cerophilum, R. verrucosum, R. pini, and three new species isolated from Strelitzia, Musa and forest soil, respectively, reside in the Capnodiales clade. The human-pathogenic species R. mackenziei and R. basitonum, together with R. fasciculatum and R. anceps, cluster with Rhinocladiella (type species: Rh. atrovirens, Herpotrichiellaceae, Chaetothyriales), and are allocated to this genus. Veronaea botryosa, the type species of the genus Veronaea, also resides in the Chaetothyriales clade, whereas Veronaea simplex clusters as a sister taxon to the Venturiaceae (Pleosporales), and is placed in a new genus, Veronaeopsis. Ramichloridium obovoideum clusters with Carpoligna pleurothecii (anamorph: Pleurothecium sp., Chaetosphaeriales), and a new combination is proposed in Pleurothecium. Other ramichloridium-like clades include R. subulatum and R. epichloës (incertae sedis, Sordariomycetes), for which a new genus, Radulidium is erected. Ramichloridium schulzeri and its varieties are placed in a new genus, Myrmecridium (incertae sedis, Sordariomycetes). The genus Pseudovirgaria (incertae sedis) is introduced to accommodate ramichloridium-like isolates occurring on various species of rust fungi. A veronaea-like isolate from Bertia moriformis with phylogenetic affinity to the Annulatascaceae (Sordariomycetidae) is placed in a new genus, Rhodoveronaea. Besides Ramichloridium, Periconiella is also polyphyletic. Thysanorea is introduced to accommodate Periconiella papuana (Herpotrichiellaceae), which is unrelated to the type species, P. velutina (Mycosphaerellaceae). PMID:18490996

  17. Plectranthus (Labiatae and allied genera in Southern Africa

    L. E. Codd

    1975-12-01

    Full Text Available A revision is presented of the 40 species of Plectranthus, 1 species of Rabdosia and 3 species of Solenostemon which are indigenous, semi-naturalized or widely cultivated in Southern Africa. Descriptions, illustrations, keys and distribution data are provided. The following new names are published:  P. mutabilis Codd,  P. psammophilus Codd,  P. rubropunctatus Codd,  P. unguentarius Codd,  P. ornatus Codd (nom. nov. for Coleus comosus Hochst. ex Guerke, P. zatarhendi (Forsk. E. A. Bruce var.  tomentosus (Benth. Codd, —var.  woodii  (Guerke Codd,  P. madagascariensis (Pers. Benth. var.  aliciae  Codd,  Solenostemon scutellarioides (L. Codd and  S. shirensis (Guerke Codd.

  18. Phylogenetic and morphotaxonomic revision of Ramichloridium and allied genera

    H.-D Shin

    2007-08-01

    Full Text Available The phylogeny of the genera Periconiella, Ramichloridium, Rhinocladiella and Veronaea was explored by means of partial sequences of the 28S (LSU rRNA gene and the ITS region (ITS1, 5.8S rDNA and ITS2. Based on the LSU sequence data, ramichloridium-like species segregate into eight distinct clusters. These include the Capnodiales (Mycosphaerellaceae and Teratosphaeriaceae, the Chaetothyriales (Herpotrichiellaceae, the Pleosporales, and five ascomycete clades with uncertain affinities. The type species of Ramichloridium, R. apiculatum, together with R. musae, R. biverticillatum, R. cerophilum, R. verrucosum, R. pini, and three new species isolated from Strelitzia, Musa and forest soil, respectively, reside in the Capnodiales clade. The human-pathogenic species R. mackenziei and R. basitonum, together with R. fasciculatum and R. anceps, cluster with Rhinocladiella (type species: Rh. atrovirens, Herpotrichiellaceae, Chaetothyriales, and are allocated to this genus. Veronaea botryosa, the type species of the genus Veronaea, also resides in the Chaetothyriales clade, whereas Veronaea simplex clusters as a sister taxon to the Venturiaceae (Pleosporales, and is placed in a new genus, Veronaeopsis. Ramichloridium obovoideum clusters with Carpoligna pleurothecii (anamorph: Pleurothecium sp., Chaetosphaeriales, and a new combination is proposed in Pleurothecium. Other ramichloridium-like clades include R. subulatum and R. epichloës (incertae sedis, Sordariomycetes, for which a new genus, Radulidium is erected. Ramichloridium schulzeri and its varieties are placed in a new genus, Myrmecridium (incertae sedis, Sordariomycetes. The genus Pseudovirgaria (incertae sedis is introduced to accommodate ramichloridium-like isolates occurring on various species of rust fungi. A veronaea-like isolate from Bertia moriformis with phylogenetic affinity to the Annulatascaceae (Sordariomycetidae is placed in a new genus, Rhodoveronaea. Besides Ramichloridium, Periconiella is also polyphyletic. Thysanorea is introduced to accommodate Periconiella papuana (Herpotrichiellaceae, which is unrelated to the type species, P. velutina (Mycosphaerellaceae.

  19. The media and the military: Allies or adversaries?

    Leopold Scholtz

    2012-02-01

    Full Text Available Military commanders like Alexander the Great or Richard the Lionheart did not have to take public opinion greatly into account when they planned their campaigns in their day. Today it is a very different situation. In the light of the above this article starts with two somewhat startling quotes by the futurologists Alvin and Heidi Toffler: "The people thinking hardest about warfare in the future know that some of the most important combat of tomorrow will take place on the media battlefield." They also state: “[T]he media, including channels and technologies unimagined today, will be a prime weapon for Third Wave combatants in both the wars and anti-wars of the future, a key component of knowledge strategy.” In recent years, much has been made of the adversarial relations between journalists and the military. The media have, for instance, been blamed for the US defeat in Vietnam, for unthinkingly blabbing about tactical decisions in advance in the Falklands, etc. From their side, journalists have been blaming the military for not trying to understand the nature of their job, of covering up a number of bad things, etc.

  20. LHC Report: stoat-ally back on track!

    Stefano Bertolasi and Mike Lamont for the LHC team

    2016-01-01

    Electrical equipment that was damaged by the beech marten has been repaired. The LHC is back on track with ever higher beam intensity.    Technicians at work on the transformer that was damaged by the beech marten. (Image: Stefano Bertolasi/CERN) Early in the morning of Friday, 29 April, the LHC was running with Stable Beams with 49 bunches per beam. Earlier that week, the scrubbing run had been cut short after a vacuum leak had developed in the SPS beam dump. Following this, the LHC had started its planned intensity ramp-up, albeit with a limited number of bunches per injection from the SPS to avoid overstressing the compromised beam dump. At 05:32:16 on Friday, the beams were dumped. The logbook entry reads “Foreign object (weasel) found on the 66kV transformer in P8, causing severe electrical disturbance throughout the complex”. The weasel, later more accurately identified as a beech marten, had taken out a 66 to 18 kV transformer at Point 8 of th...

  1. Trusted Allies with New Benefits: Repositioning Existing Drugs

    Gao, Xin

    2016-01-25

    The classical assumption that one drug cures a single disease by binding to a single drug-target has been shown to be inaccurate. Recent studies estimate that each drug on average binds to at least six known and several unknown targets. Identifying the “off-targets” can help understand the side effects and toxicity of the drug. Moreover, off-targets for a given drug may inspire “drug repositioning”, where a drug already approved for one condition is redirected to treat another condition, thereby overcoming delays and costs associated with clinical trials and drug approval. In this talk, I will introduce our work along this direction. We have developed a structural alignment method that can precisely identify structural similarities between arbitrary types of interaction interfaces, such as the drug-target interaction. We have further developed a novel computational framework, iDTP that constructs the structural signatures of approved and experimental drugs, based on which we predict new targets for these drugs. Our method combines information from several sources including sequence independent structural alignment, sequence similarity, drug-target tissue expression data, and text mining. In a cross-validation study, we used iDTP to predict the known targets of 11 drugs, with 63% sensitivity and 81% specificity. We then predicted novel targets for these drugs—two that are of high pharmacological interest, the peroxisome proliferator-activated receptor gamma and the oncogene B-cell lymphoma 2, were successfully validated through in vitro binding experiments.

  2. Alumina Producers in Shandong Province Allied to Win Negotiation

    2008-01-01

    <正>Faced with the soaring bauxite price,five alu- mina producers in Shandong Province jointly established Shangdong Bauxite Import Compa- nies Club to gain a better position in price ne- gotiation with foreign counterparts by getting

  3. India China Encounters-Allies and Competitors. A global perspective

    Schmidt, Johannes Dragsbæk

    alignments in the global context where both countries share similar interests when it comes to op-posing the US and European Union (EU) in climate change policy, world trade and to a certain ex-tent in security and energy matters. However disagreement persists on unresolved problems in terms of attracting......The aim of this contribution is to explore the comparative political economic relations between India and China in a critical framework focusing on the bilateral and strategic foreign policy ties. The intention is then to discuss the intertwined geo-political and geoeconomic foreign policy...

  4. Tin - an unlikely ally for silicon field effect transistors?

    Hussain, Aftab M.

    2014-01-13

    We explore the effectiveness of tin (Sn), by alloying it with silicon, to use SiSn as a channel material to extend the performance of silicon based complementary metal oxide semiconductors. Our density functional theory based simulation shows that incorporation of tin reduces the band gap of Si(Sn). We fabricated our device with SiSn channel material using a low cost and scalable thermal diffusion process of tin into silicon. Our high-κ/metal gate based multi-gate-field-effect-transistors using SiSn as channel material show performance enhancement, which is in accordance with the theoretical analysis. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  5. Will Allis Prize Talk: Electron Collisions - Experiment, Theory and Applications

    Bartschat, Klaus

    2016-05-01

    Electron collisions with atoms, ions, and molecules represent one of the very early topics of quantum mechanics. In spite of the field's maturity, a number of recent developments in detector technology (e.g., the ``reaction microscope'' or the ``magnetic-angle changer'') and the rapid increase in computational resources have resulted in significant progress in the measurement, understanding, and theoretical/computational description of few-body Coulomb problems. Close collaborations between experimentalists and theorists worldwide continue to produce high-quality benchmark data, which allow for thoroughly testing and further developing a variety of theoretical approaches. As a result, it has now become possible to reliably calculate the vast amount of atomic data needed for detailed modelling of the physics and chemistry of planetary atmospheres, the interpretation of astrophysical data, optimizing the energy transport in reactive plasmas, and many other topics - including light-driven processes, in which electrons are produced by continuous or short-pulse ultra-intense electromagnetic radiation. In this talk, I will highlight some of the recent developments that have had a major impact on the field. This will be followed by showcasing examples, in which accurate electron collision data enabled applications in fields beyond traditional AMO physics. Finally, open problems and challenges for the future will be outlined. I am very grateful for fruitful scientific collaborations with many colleagues, and the long-term financial support by the NSF through the Theoretical AMO and Computational Physics programs, as well as supercomputer resources through TeraGrid and XSEDE.

  6. India, the United States' New Ally in Asia

    Jaffrelot, Christophe

    2005-01-01

    The years 1998 to 2004 of Vajpayee's government saw a turning point in India-U.S. relations. Although the first major decision this government made - the 1998 nuclear testing - brought on immediate sanctions from the United States, the warming detectible afterward has not waned. In January 2004, the two countries launched a joint initiative baptized Next Step in the Strategic Partnership (NSSP), a development to which Ambassador Blackwill - a close advisor to George W. Bush whose team in Wash...

  7. I. The metabolic properties of plutonium and allied materials

    Hamilton, J.G.

    1948-05-24

    This report on the metabolic properties of plutonium and related radioactive materials presents experimental information in the following areas: radioautographic studies; tracer studies (with tables of accumulation in tissues) of actinium, radio-zirconium, technetium, radio-rubidium, radio-germanium, beryllium, and cadmium; decontamination and bone metabolism studies; and radio-chemical isolation.

  8. Preparing interpreting students to be allies in the Deaf community

    Shaw, Sherry

    2014-01-01

    The profession of interpreting is directly linked to consumers who rely upon the linguistic skill, cultural competence, ethical conduct, and professional dispositions of qualified interpreters to provide them with equal access to information. The norms for a signed language interpreter’s behavior that align with a standard of quality are of particular interest when contemplating how interpreters could be involved within the Deaf community. This paper addresses the ongoing discu...

  9. Applications of Gandhian concepts in psychology and allied disciplines

    Kool, Vinod K.

    2013-01-01

    The paper highlights the significance of Gandhian concepts in research in psychology and its related fields. To illustrate the application of Gandhian ideology, a test of non-violence is described here with its psychometric properties. Further, two unexplored research issues having a bearing on clinical psychology and psychiatry have been delineated. Firstly, a call for addressing the mental health problems of non-violent protesters numbering over one billion spread all over the world has bee...

  10. Kas Viljandi ikka vajab oma Treffnerit? / Alli Lunter

    Lunter, Alli

    2010-01-01

    Viljandi linnavalitsuse soovunelm on teha oma Treffner. Minister Lukas võttis haridusrahva survel gümnaasiumi ja põhikooli lahutamise mõtte tagasi, aga Viljandi linnavolikogu on võtnud endale ikkagi voli rajada Viljandisse ühendgümnaasium

  11. Galvanic Protection Of 2219 Al By Al/Li Powder

    Daech, Alfred

    1995-01-01

    Coatings consisting of aluminum/lithium powders incorporated into acrylic resin found to protect panels of 2219 aluminum from corrosion by salt spray better than coating consisting of 2219 aluminum in same acrylic resin. Exact mechanism by which aluminum/lithium coatings protect against corrosion unknown, although galvanic mechanism suspected. These coatings (instead of chromium) applied to fasteners and bars to provide cathodic protection, both with and without impressed electrical current.

  12. Renewable energy and environment ally sustainable development in Pakistan

    In Pakistan, about two-thirds of the primary energy requirements are met through conventional sources while traditional biomass accounts the remaining one-third The primary commercial energy is largely based on fossil fuels. Indigenous reserves of oil and gas are limited and the coal available in the country is of poor quality. Environmental pollution and greenhouse gas emissions from energy use are becoming significant environmental issues in the country. Achieving solutions to these environmental problems requires long-term potential actions for sustainable development. In this regard, renewable energy resources appear to be one of the most efficient and effective solutions. Pakistan's geographical location has several advantages for extensive use of most of these renewable energy sources. This paper presents review of the present energy situation and environmental sustainability, and assesses the potential of renewable energy sources in Pakistan. Also, potential solutions to current environmental problems are identified along with renewable energy technologies. Several problems relating to renewable energy sources, environmentally sustainable development are discussed from both current and future perspectives. The present study shows that there is substantial potential of renewables in Pakistan. For achieving environmentally sustainable development, renewables must be developed and utilized. (author)

  13. Phylogeny of Rosellinia capetribulensis sp. nov. and its allies (Xylariaceae)

    Bahl, J; Jeewon, R; Hyde, KD

    2005-01-01

    A new Rosellinia species, R. capetribulensis isolated from Calamus sp. in Australia is described. R. capetribulensis is characterized by perithecia immersed within a carbonaceous stroma surrounded by subiculum-like hyphae, asci with large, barrel-shaped amyloid apical apparatus and large dark brown spores. Morphologically, R. capetribulensis appears to be similar to R. bunodes, R. markhamiae and R. megalospora. To gain further insights into the phylogeny of this new taxon we analyzed the ITS-...

  14. Fromm and Habermas: Allies for Adult Education and Democracy

    Fleming, Ted

    2012-01-01

    The legacy of the Frankfurt Institute for Social Research has been a powerful force for critically understanding social reality. Erich Fromm was one of the early and best known members of the Institute. Fromm emphasised the centrality of culture and interpersonal relations in the construction of the psyche. The unconscious was not only the…

  15. Maths Work: Maths in the Textile, Clothing, Footwear & Allied Industries.

    Wallace, Midge

    This book is designed to help individuals be aware of how much mathematics is used at work. It is designed to help trainers decide what to do if workers need help to improve their mathematics skills. An introduction looks at mathematics as it is used at work by discussing how it is used on the job. The book discusses the problems for workers with…

  16. Marketing of adventure tourism : Allied Adventure Travels and Tours, Nepal

    Limbu, Dil

    2015-01-01

    This study has the main objective of comparing theoretical knowledge regarding tourism marketing, specifically adventure activities to its implementation by a real company. The case company and destination in regard to this research is Nepal. Hence, this study tries to understand how well a real adventure travel company understands and implements the theoretical part of tourism marketing in the real marketing activities. The theoretical part of this study consists of mainly tourism and advent...

  17. Service-Learning and Social Entrepreneurship: From Strangers to Allies

    Angela Lewellyn Jones

    2012-04-01

    Full Text Available Service-learning and social entrepreneurship share a common goal of engaging students in work to achieve the public good, and a desire to link education to addressing social problems and needs. Yet an examination of the two initiatives reveals that they generally co-exist on college and university campuses with little or no collaboration or communication between the two programs. This paper examines the definitions and core identities of service-learning and social entrepreneurship, exploring the potential for how the two initiatives might complement and support one another’s work in higher education. This examination includes identifying the values, philosophies, and practices that might provide common ground as well as those that might present points of conflict and tension. KEYWORDSService-learning; Social Entrepreneurship; Civic Engagement

  18. Preclinical imaging: an essential ally in modern biosciences.

    Cunha, Lídia; Horvath, Ildiko; Ferreira, Sara; Lemos, Joana; Costa, Pedro; Vieira, Domingos; Veres, Dániel S; Szigeti, Krisztián; Summavielle, Teresa; Máthé, Domokos; Metello, Luís F

    2014-04-01

    Translational research is changing the practice of modern medicine and the way in which health problems are approached and solved. The use of small-animal models in basic and preclinical sciences is a major keystone for these kinds of research and development strategies, representing a bridge between discoveries at the molecular level and clinical implementation in diagnostics and/or therapeutics. The development of high-resolution in vivo imaging technologies provides a unique opportunity for studying disease in real time, in a quantitative way, at the molecular level, along with the ability to repeatedly and non-invasively monitor disease progression or response to treatment. The greatest advantages of preclinical imaging techniques include the reduction of biological variability and the opportunity to acquire, in continuity, an impressive amount of unique information (without interfering with the biological process under study) in distinct forms, repeated or modulated as needed, along with the substantial reduction in the number of animals required for a particular study, fully complying with 3R (Replacement, Reduction and Refinement) policies. The most suitable modalities for small-animal in vivo imaging applications are based on nuclear medicine techniques (essentially, positron emission tomography [PET] and single photon emission computed tomography [SPECT]), optical imaging (OI), computed tomography (CT), magnetic resonance imaging (MRI), magnetic resonance spectroscopy imaging (MRSI), and ultrasound. Each modality has intrinsic advantages and limitations. More recently, aiming to overcome the inherent limitations of each imaging modality, multimodality devices designed to provide complementary information upon the pathophysiological process under study have gained popularity. The combination of high-resolution modalities, like micro-CT or micro-MRI, with highly sensitive techniques providing functional information, such as micro-PET or micro-SPECT, will continue to broaden the horizons of research in such key areas as infection, oncology, cardiology, and neurology, contributing not only to the understanding of the underlying mechanisms of disease, but also providing efficient and unique tools for evaluating new chemical entities and candidate drugs. The added value of small-animal imaging techniques has driven their increasing use by pharmaceutical companies, contract research organizations, and research institutions. PMID:24146172

  19. Nutrition economics – food as an ally of public health

    Lenoir-Wijnkoop, I.; Jones, P. J.; Uauy, R; L. Segal; Milner, J

    2013-01-01

    Non-communicable diseases (NCD) are a major and increasing contributor to morbidity and mortality in developed and developing countries. Much of the chronic disease burden is preventable through modification of lifestyle behaviours, and increased attention is being focused on identifying and implementing effective preventative health strategies. Nutrition has been identified as a major modifiable determinant of NCD. The recent merging of health economics and nutritional sciences to form the n...

  20. Athletic Training: From Physical Education to Allied Health

    Perrin, David H.

    2007-01-01

    Athletic training was spawned from physical education in the 1960s, and since that time has evolved into a recognized health care profession. The majority of accredited athletic training education programs (ATEPs) are housed within academic units of kinesiology. However, the National Athletic Trainers' Association (NATA) has recommended that ATEPs…

  1. Relation microstructure-propriétés mécaniques d'un acier martensitique inoxydable

    Badinier Guillaume; Mithieux Jean-Denis; Herbelin Jean-Marc

    2013-01-01

    The relationship between microstructure and mechanical properties of MaX (1.4006) martensitic stainless steel has been studied. Optical microscopy was used to characterize the microstructure and the volume fraction of retained ferrite was measured by image analysis. Mechanical properties were measured in uni-axial tensile testing and a composite model has been developed to capture the effect of both the retained ferrite and the carbon content of the martensitic phase. First results show a rea...

  2. Controle sismique d'un batiment en acier de 1 etage par amortisseurs elastomeres et contreventements en Chevron

    Girard, Olivier

    Actuellement, le principe de dimensionnement a la capacite est fortement utilise dans le domaine du genie parasismique. De maniere simplifiee, cette methode de dimensionnement consiste a dissiper l'energie injectee a une structure lors d'une secousse sismique par la deformation inelastique d'un element structural sacrificiel. Cette methode de dimensionne-ment permet d'obtenir des structures economiques, car cette dissipation d'energie permet de reduire substantiellement les efforts qui se retrouvent a l'interieur de la structure. Or, la consequence de ce dimensionnement est la presence de degats importants a la structure qui suivent a la secousse sismique. Ces degats peuvent engendrer des couts superieurs aux couts d'erection de la structure. Bien entendu, sachant que les secousses sismiques d'importances sont des phenomenes rares, l'ingenieur est pret a accepter ce risque afin de diminuer les couts initiaux de construction. Malgre que cette methode ait permis d'obtenir des constructions economiques et securitaires, il serait interessant de developper un systeme qui permettrait d'obtenir des performances de controle des efforts sismiques comparables a un systeme dimensionne selon un principe de dimensionnement a la capacite sans les consequences negatives de ces systemes. En utilisant les principes d'isolation a la base, il a ete possible de developper un systeme de reprise des forces sismiques (SRFS). qui permet d'obtenir un controle des efforts sismiques concurrentiels tout en gardant une structure completement elastique. Ce systeme consiste u inserer un materiel elastomere entre l'assemblage de la poutre et des contreventements a l'interieur d'un cadre contrevente conventionnel. Cette insertion permet de diminuer substantiellement la rigidite laterale du batiment, ce qui a pour consequence d'augmenter la valeur de la periode fondamentale du batiment dans lequel ces cadres sont inseres. Ce phenomene est appele le saut de periode. Ce saut de periode permet de reduire grandement l'amplification dynamique essuyee lors d'un seisme du au contenu frequentiel particulier des secousses sismiques. Toutefois, la reduction de la rigidite globale a pour consequence d'augmenter grandement les deplacements de fonctionnement de la structure, ce phenomene etant mitige par les proprietes amortissantes de l'elastomere utilise. Le SRFS propose a ete etudie dans le cadre de la presente maitrise. Les objectifs de l'etude consistent a demontrer l'efficacite et la faisabilite du systeme propose ainsi que de developper une methode de dimensionnement efficace et securitaire pour ce genre de systeme. Afin de faciliter l'obtention des objectifs, l'approche qui a ete utilisee est l'etude comparative d'un meme batiment dimensionne selon deux principes. Le premier est le dimensionnement a la capacite. Le second est un dimensionnement employant le systeme propose. La presente etude a ete scindee en quatre parties distinctes. La premiere est l'etude du materiel elastomere afin de determiner les proprietes utiles lors d'un dimensionnement. La seconde est le dimensionnement et l'etude en laboratoire du comportement d'un cadre contrevente selon un principe de dimensionnement a la capacite. La troisieme partie est le dimensionnement et l'etude en laboratoire du comportement d'un cadre contrevente integrant des amortisseurs elastomeres. La quatrieme et derniere partie est l'etude comparative des performances sismiques d'un batiment qui emploie des cadres amortis avec des amortisseurs elastomeres avec les performances d'un batiment qui emploie un SRFS par contreventements classiques. A la suite des differentes analyses, il a ete possible de conclure sur les performances du systeme propose employant des amortisseurs elastomeres. Le systeme possede un excellent comportement quant aux sollicitations sismiques. Le controle des efforts sismiques est du meme ordre qu'un SRFS par contreventements de ductilite moderee (reduction des efforts elastiques par un facteur de 3). Bien que la demande en deplacement soit plus grande pour le systeme propose que pour un syst

  3. Etude de la recristallisation au cours du laminage a chaud d’aciers a basse densite fer-aluminium

    Castan, Christophe

    2011-01-01

    The instructions of the European Union pilot the R&D in the automotive industry regarding the use of lightweight materials which aims at reducing fuel consumption and emission of exhaust gases.The objective is to develop steels of density reduced by at least 10% (ρmax ≈ 7g/cm3). Iron aluminum alloys display promising physical and mechanical properties but they often exhibit surface defects, referred to as roping, appearing after the deep drawing process. This study was carried out to better u...

  4. Welding hot cracking in an austenitic stainless steel; Fissuration a chaud en soudage d'un acier inoxydable austenitique

    Kerrouault, N

    2001-07-01

    The occurrence of hot cracking is linked to several conditions, in particular, the composition of the material and the local strains due to clambering. The aim of this study is to better analyse the implied mechanisms and to lead to a local thermomechanical criterion for hot cracking. The example studied is an AISI 321-type stainless steel (X10CrNiTi18-12) strongly prone to cracking. Two weldability tests are studied: - the first one consists in carrying out a fusion line by the TIG process on a thin sheet. In the case of the defect occurrence, the crack is longitudinal and follows the back of the molten bath. The influence of the operating conditions welding (speed, welding heat input, width test sample) is studied. - the second one is the Varestraint test. It is widely used to evaluate the sensitivity of a material to hot cracking. It consists in loading the material by bending during a fusion line by the TIG process and in characterising the defects quantity (length, number). Various thermal and mechanical instrumentation methods were used. The possibilities of a local instrumentation instrumentation being limited because of the melting, the experimental results were complemented by a numerical modelling whose aim is to simulate the thermomechanical evolution of the loading thanks to the finite element analysis code ABAQUS. First, the heat input for thermal simulation is set by the use of an inverse method in order to optimise the energy deposit mode during welding in the calculation. Then, the mechanical simulation needs the input of a constitutive law that fits the mechanical behaviour over a wide temperature range from ambient to melting temperature. Thus, a mechanical characterization is performed by selecting strain values and strain rates representative of what the material undergoes during the tests. The results come from tensile and compressive tests and allow to settle an elasto-visco-plastic constitutive law over temperatures up to liquidus. Once validated, the thermomechanical simulation brings new interpretations of the tests observations and instrumentation results. The comparison of experimental and numerical results make it possible to determine a thermomechanical welding hot cracking criterion during solidification. This criterion simultaneously considers mechanical (strain and strain rates threshold) and thermal (temperature range, thermal gradient) parameters which give the position and orientation of the first crack initiation. The criterion precision are in good agreement with the observations on the two considered weldability tests. (author)

  5. Relation microstructure-propriétés mécaniques d'un acier martensitique inoxydable

    Badinier Guillaume

    2013-11-01

    Full Text Available The relationship between microstructure and mechanical properties of MaX (1.4006 martensitic stainless steel has been studied. Optical microscopy was used to characterize the microstructure and the volume fraction of retained ferrite was measured by image analysis. Mechanical properties were measured in uni-axial tensile testing and a composite model has been developed to capture the effect of both the retained ferrite and the carbon content of the martensitic phase. First results show a reasonable correlation between the experimental stress-strain curves and the model. Results are discussed in view of a previous study on plain martensitic carbon steels.

  6. Numerical modelling of steel arc welding; Modelisation numerique du soudage a l'arc des aciers

    Hamide, M

    2008-07-15

    Welding is a highly used assembly technique. Welding simulation software would give access to residual stresses and information about the weld's microstructure, in order to evaluate the mechanical resistance of a weld. It would also permit to evaluate the process feasibility when complex geometrical components are to be made, and to optimize the welding sequences in order to minimize defects. This work deals with the numerical modelling of arc welding process of steels. After describing the industrial context and the state of art, the models implemented in TransWeld (software developed at CEMEF) are presented. The set of macroscopic equations is followed by a discussion on their numerical implementation. Then, the theory of re-meshing and our adaptive anisotropic re-meshing strategy are explained. Two welding metal addition techniques are investigated and are compared in terms of the joint size and transient temperature and stresses. The accuracy of the finite element model is evaluated based on experimental results and the results of the analytical solution. Comparative analysis between experimental and numerical results allows the assessment of the ability of the numerical code to predict the thermomechanical and metallurgical response of the welded structure. The models limitations and the phenomena identified during this study are finally discussed and permit to define interesting orientations for future developments. (author)

  7. Modélisation multidomaine du comportement magnéto-mécanique des aciers dual-phases

    Mballa Mballa, Frederick; Hubert, Olivier; Lazreg, Said; Meilland, Philip

    2011-01-01

    The microstructure and mechanical behavior of dual-phase steels are highly sensitive to the variation of the process (heat treatments). Online control by magnetic method is relevant. A measurement under applied stress must be considered. The dual-phase is a two-phase medium (ferrite / martensite). Each phase can be considered as a sphere embedded in a homogeneous equivalent medium. The model used for each phase is based on a magneto-mechanical coupled model. This is an explicit single crystal...

  8. Indépendance faible des quantificateurs

    Zuber, Richard

    2007-01-01

    Quanti cateurs Q1 et Q2 du type sont faiblement indépendants si et seulement si Q1Q2(R) = Q2Q1(R1) pour toute relation- produit R. On donne une condition suf sante et nécessaire pour que deux quanti cateurs soient faiblement indépendants.

  9. Comparaison de différentes armatures utilisées pour le renforcement du béton

    Perier, Virginie; Chataigner, Sylvain; PRUVOST, Anthony

    2013-01-01

    La principale pathologie des ouvrages en béton est due à la corrosion des armatures en acier et beaucoup de recherches se sont intéressées à l'utilisation d'armatures insensibles à la corrosion, comme les aciers inoxydables ou plus récemment des armatures composites à fibres longues et à matrice organique. Cet article compare les différentes solutions (acier carbone classique, acier inoxydable et armatures composites) d'un point de vue technique et environnementale. Au plan technique, les pri...

  10. Microstructural study of thermally aged duplex stainless steel deformation and fracture modes; Etude microstructurale des modes de deformation et de rupture d`un acier austenoferritique vieilli thermiquement

    Verhaeghe, B. [Institut national polytechnique, 38 - Grenoble (France)

    1996-12-31

    The aim of this work is to study the micro mechanisms of deformation and rupture of an austeno ferritic stainless steel (Z 3 CND 22-10 M) with 33 % of ferrite. It is studied after ageing 1 000 h at 400 deg. C and 8 000 h at 350 deg. C and compared to the `as received` state. During ageing the ferritic phase undergoes microstructural evolutions which affects its properties. The two ageing treatments lead to roughly the same level of embrittlement. Microstructural characterisation shows that both phases percolate and exhibit orientation relationships close to Kurdjumov-Sachs ones. Mechanical properties of the steel were characterised for different ageing treatments at room temperature and at 320 deg. C. The interface is particularly strong and ensures the load transfer to ferrite even if this phase contains cleavage cracks. Moreover the interface does not oppose slip transmission which is instead controlled by localised glide in the ferritic phase. If activated slip systems of austenite are common with ferrite, slip transmission from austenite to ferrite indeed occurs through the=e interface. If they are not common, dislocations cross-slip back into the austenite. At 320 deg. C cross-slip occurs even far from the interface. Damage starts by nucleation in ferrite of cleavage cracks which propagate between austenite islands. Crack propagation is controlled by stretching of austenite ligaments. The material breaks by ductile tearing of austenite islands when the crack eventually percolates in the ferritic phase. The ductility of the material can be correctly describer using a simple model that takes into account the tearing-off the ductile-phase. (author). 153 refs.

  11. Behaviour and damage of aged austenitic-ferritic steels: a micro-mechanical approach; Comportement et endommagement des aciers austeno-ferritiques vieillis: une approche micromecanique

    Bugat, St

    2000-12-15

    The austenitic-ferritic steels are used in the PWR primary cooling system. At the running temperature (320 C), they are submitted to a slow aging, which leads to the embrittlement of the ferritic phase. This embrittlement leads to a decrease of the mechanical properties, in particular of the crack resistance of the austenitic-ferritic steels. The damage and rupture of the austenitic-ferritic steels have been approached at the ENSMP by the works of P. Joly (1992) and of L. Devilliers-Guerville (1998). These works have allowed to reveal a damage heterogeneity which induces a strong dispersion on the ductilities and the toughnesses as well as on the scale effects. Modeling including the damage growth kinetics measured experimentally, have allowed to verify these effects. Nevertheless, they do not consider the two-phase character of the material and do not include a physical model of the cleavage cracks growth which appear in the embrittled ferrite. In this study, is proposed a description of the material allowing to treat these aspects while authorizing the structure calculation. In a first part, the material is studied. The use of the ESBD allows to specify the complex morphology of these steels and crystal orientation relations between the two phases. Moreover, it is shown that the two phases keep the same crystal orientation in the zones, called bicrystals, whose size varies between 500 {mu}m and 1 mm. The study of the sliding lines, coupled to the ESBD, allows to specify too the deformation modes of the two phases. At last, tensile and tensile-compression tests at various deformation range are carried out to characterize the macroscopic mechanical behaviour of these materials. Then, a micro-mechanical modeling of the material behaviour is proposed. This one takes into account the three scales identified at the preceding chapter. The first scale, corresponding to the laths is described as a monocrystal whose behaviour includes both an isotropic and a kinematic strain hardening. In the second one, the bicrystal is represented either by a finite element method on a representative pattern or by a phenomenological mean fields model adjusted on the finite element method. The third one, the poly-crystal represents the aggregate of bicrystals, and is modelled by polycrystals classical models. The different parameters of the model are identified on monotonous tensile tests and on tensile-compression tests. The damage is then approached. The experiments show that the cleavage cracks appear preferentially at the intersection of the two gliding bands of the ferrite. These observations lead to propose a Cottrell model to represent the cleavage initiation. This model is then extrapolated in order to take into account the growth kinetics. Then is defined a density of the cleavage cracks for each of the three ferrite cleavage plans. The damage is by consequence anisotropic and can be represented by a damage tensor of the fourth order. An easy coupling model taking into account the damage tensor is proposed. At last, the rupture is represented by the Thomasen criteria. The damage model on the whole is introduced too into the calculation code. (O.M.)

  12. New concepts in the production of specialty steels in bars and coils; Nouveaux concepts dans la production de barres et de couronnes en aciers speciaux

    Lestani, M. [Danieli Morgardshammar (Country unknown/Code not available)

    1997-10-01

    Danieli has developed a complete integrated metallurgical process for the newer mini-mills. It assures prime quality of the products, an attractive reduction of the production cost through energy and storage savings, an improved satisfaction of the customer with short delivery times. It consists in direct rolling of blooms or billets coming from the continuous caster; it is named the Black Box concept. This implies and entirely new approach of the mill design and operation. Three sites are now producing using this concept and two are scheduled to be commissioned in 1998. (author)

  13. Microstructure and embrittlement of VVER 440 reactor pressure vessel steels; Microstructure et fragilisation des aciers de cuve des reacteurs nucleaires VVER 440

    Hennion, A

    1999-03-15

    27 VVER 440 pressurised water reactors operate in former Soviet Union and in Eastern Europe. The pressure vessel, is made of Cr-Mo-V steel. It contains a circumferential arc weld in front of the nuclear core. This weld undergoes a high neutron flux and contains large amounts of copper and phosphorus, elements well known for their embrittlement potency under irradiation. The embrittlement kinetic of the steel is accelerated, reducing the lifetime of the reactor. In order to get informations on the microstructure and mechanical properties of these steels, base metals, HAZ, and weld metals have been characterized. The high amount of phosphorus in weld metals promotes the reverse temper embrittlement that occurs during post-weld heat treatment. The radiation damage structure has been identified by small angle neutron scattering, atomic probe, and transmission electron microscopy. Nanometer-sized clusters of solute atoms, rich in copper with almost the same characteristics as in western pressure vessels steels, and an evolution of the size distribution of vanadium carbides, which are present on dislocation structure, are observed. These defects disappear during post-irradiation tempering. As in western steels, the embrittlement is due to both hardening and reduction of interphase cohesion. The radiation damage specificity of VVER steels arises from their high amount of phosphorus and from their significant density of fine vanadium carbides. (author)

  14. Brittle-ductile transition for nuclear applications in contact with mercury; Transition fragile - ductile des aciers pour des applications nucleaires en contact avec du mercure

    Medina-Almazan, L.; Auger, T.; Gorse, D. [CECM/CNRS-UPR2801, 15 rue Georges Urbain, 94407 Vitry sur Seine CEDEX (France)

    2006-07-01

    In this work is studied the mercury embrittlement of austenitic stainless steel 316L and ferritic-martensitic steel T91 at ambient temperature in carrying out tensile tests on CCT (Center Cracked Tension) specimens at solicitation velocities between 1.67*10{sup -8} and 6.67*10{sup -3} m.s{sup -1}. The results reveal that these two steels are sensitive to mercury embrittlement. A ductile-brittle transition of the steel 316L in contact to mercury in terms of the deformation velocity is observed. The early beginnings of such a transition are visible too on the steel T91 in the experiment conditions. On a some range of the solicitation velocity, the presence of mercury modifies the plastic behaviour of the material in inhibiting the nucleation-growth of the cavities. For these two steels in contact with mercury, in the area of velocities for which a brittle rupture is observed, it appears that the fracture is produced by de-cohesion of shear bands. (O.M.)

  15. Estimation du risque de rupture fragile de soudures de pipelines en aciers à haut grade : caractérisation et modélisation

    Bilat, Anne-Sophie

    2007-01-01

    As a consequence to reduction of gas transportation costs, pressure inside pipe will tend to increase. To achieve it, ferritic-bainitic steel with high strength, such as X100 (yield strength above 100 ksi, or 690 MPa) were developed. Girth welds of modern line pipe steel X100, issued from a pulsed automatic gas metal arc welding, were tested to check their performance in artic temperature conditions. It is shown that an impact specimen at -20 °C with a notch placed in the middle of the fusion...

  16. The role of thiosulfate on the microbial induced pitting of carbon steel; Role du thiosulfate sur la corrosion par piqures bacterienne de l`acier

    Campaignolle, X.; Caumette, P. [Laboratoire d`Oceanographie Biologique, 33 - Arcachon (France); Dabosi, F. [Ecole Nationale Superieure de Chimie, 31 - Toulouse (France); Crolet, J.L. [Societe Nationale Elf-Aquitaine (France)

    1996-12-31

    The risk factors connecting a bacterial contamination to the development of a corrosion by rapid pitting were studied by comparing the natural coupling current circulating between two concentric electrodes. Whether they are sulfate-reducing (BSR) or thiosulfate-reducing (BTR) bacteria, the presence and use of thiosulfate appear as a major risk factor, leading o penetration speeds higher than one cm/year. (authors) 24 refs.

  17. Étude expérimentale et modélisation de l'adoucissement cyclique des aciers ferritiques-martensitiques revenus

    Giroux, Pierre-François

    2011-01-01

    Co-encadrement de la thèse : Maxime SAUZAY, France DALLE, Thilo MORGENEYER The present work focuses on the high temperature mechanical behaviour of 9%Cr tempered martensite steels, considered as potential candidates for structural components in future Generation IV nuclear power plants. Already used for energy production in fossil power plants, they are sensitive to softening during high-temperature cycling and creep-fatigue. This phenomenon is coupled to a pronounced microstructural degra...

  18. Welding of super austenitic stainless steels with very high nitrogen contents; Soudabilite des aciers super austenitiques a tres fortes teneurs en azote

    Bonnefois, B.; Gagnepain, J.C.; Dupoiron, F.; Charles, J. [Societe des Forges et Ateliers du Creusot (SFAC), 75 - Paris (France)

    1995-12-31

    Results of studies performed on the weld of different super austenitic stainless steels show that nitrogen additions as high as 0.5% does not deteriorate the weldability but on the contrary improves the mechanical and corrosion properties of the weld. (A.B.). 5 refs., 5 figs., 6 tabs.

  19. Controle sismique d'un batiment en acier de 3 etages a l'echelle 1/3 par amortisseurs elastomeres et contreventements en chevron

    Gauron, Olivier

    This study develops an innovative configuration of seismic natural rubber dampers for multistory low- and medium-rise steel braced frames. The dampers are directly integrated in an horizontal position in the seismic force resisting system of the structure. They are connected in a series with typical chevron brace systems. This control system provides not only additional structural damping to the structure but also a period shift, acting in the same way as a base isolation system. First, the fiber reinforced natural rubber used in the application was tested. It exhibited strong non linear dependance of its equivalent viscoelastic properties related to the shear strain. Then, a 1/3-scale 3-story chevron braced steel frame with and without dampers was considered. The structure was build and placed on the shaking table of the University of Sherbrooke Structures Laboratory. Numerical studies show that the efficiency of the control system reduces strongly the seismic induced forces of the undamped structure without any amplification of displacement or drift. Obtained seismic response reduction levels represent significant safety and economical benefits for the proposed application. Finally, the control system viability is experimentally demonstrated by shaking table tests at different reduced seismic intensities. Non linear behavior of the structure due to non linear behavior of the damping material is highlighted, and the dependance of seismic control performances is shown to be related to seismic intensities. Results allow an extrapolation of the experimental control peformances tending to the numerical results at higher intensities. Key-words : chevron braces, damper, multistory building, natural rubber, seismic control, shaking table.

  20. Crack initiation at high temperature on an austenitic stainless steel; Amorcage de fissure a haute temperature dans un acier inoxydable austenitique

    Laiarinandrasana, L.

    1994-11-25

    The study deals with crack initiation at 600 and 650 degrees Celsius, on an austenitic stainless steel referenced by Z2 CND 17 12. The behaviour laws of the studied plate were update in comparison with existing data. Forty tests were carried out on CT specimens, with continuous fatigue with load or displacement controlled, pure creep, pure relaxation, creep-fatigue and creep-relaxation loadings. The practical initiation definition corresponds to a small crack growth of about the grain size. The time necessary for the crack to initiate is predicted with fracture mechanics global and local approaches, with the helps of microstructural observations and finite elements results. An identification of a `Paris`law` for continuous cyclic loading and of a unique correlation between the initiation time and C{sup *}{sub k} for creep tests was established. For the local approach, crack initiation by creep can be interpreted as the reaching of a critical damage level, by using a damage incremental rule. For creep-fatigue tests, crack growth rates at initiation are greater than those of Paris`law for continuous fatigue. A calculation of a transition time between elastic-plastic and creep domains shows that crack initiation can be interpreted whether by providing Paris`law with an acceleration term when the dwell period is less than the transition time, or by calculating a creep contribution which relies on C{sup *}{sub k} parameter when the dwell period and/or the initiation times are greater than the transition time. Creep relaxation tests present crack growth rates at initiation which are less than those for `equivalent` creep-fatigue tests. These crack growth rates when increasing hold time, but also when temperature decreases. Though, for hold times which are important enough and at lower temperature, there is no effect of the dwell period insofar as crack growth rate is equal to continuous fatigue Paris law predicted ones. (Abstract Truncated)

  1. Study of stress relief cracking in titanium stabilized austenitic stainless steel; Etude de la fissuration differee par relaxation d'un acier inoxydable austenitique stabilise au titane

    Chabaud-Reytier, M

    1999-07-01

    The heat affected zone (HAZ) of titanium stabilised austenitic stainless steel welds (AISI 321) may exhibit a serious form of intercrystalline cracking during service at high temperature. This type of cracking, called 'stress relief cracking', is known to be due to work hardening but also to ageing: a fine and abundant intragranular Ti(C,N) precipitation appears near the fusion line and modifies the mechanical behaviour of the HAZ. This study aims to better know the accused mechanism and to succeed in estimating the risk of such cracking in welded junctions of 321 stainless steel. To analyse this embrittlement mechanism, and to assess the lifetime of real components, different HAZ are simulated by heat treatments applied to the base material which is submitted to various cold rolling and ageing conditions in order to reproduce the HAZ microstructure. Then, we study the effects of work hardening and ageing on the titanium carbide precipitation, on the mechanical (tensile and creep) behaviour of the resulting material and on its stress relief cracking sensitivity. It is shown that work hardening is the main parameter of the mechanism and that ageing do not favour crack initiation although it leads to titanium carbide precipitation. The role of this precipitation is also discussed. Moreover, a creep damage model is identified by a local approach to fracture. Materials sensitive to stress relief cracking are selected. Then, creep tests are carried out on notched bars in order to quantify the intergranular damage of these different materials; afterwards, these measurements are combined with calculated mechanical fields. Finally, it is shown that the model gives good results to assess crack initiation for a compact tension (CT) specimen during relaxation tests, as well as for a notched tubular specimen tested at 600 deg. C under a steady torque. (author)

  2. Modélisation du comportement cyclique et de la durée de vie d'aciers à outils martensitiques

    Velay, Vincent

    2003-01-01

    This work is a contribution to the description of the behavior and the assessment of the fatigue life of hot work tool steels.For that purpose, a methodology was implemented involving two complementary parts that are the investigation of behaviorand lifetime models adapted to tempered martensitic steels. The cyclic behavior of X38CrMoV5 (47HCR) and 55NiCrMoV7 (42HCR) steels was studied under various load and temperature conditions. The influence of the strain rate and strain amplitude, of the...

  3. Crack growth in an austenitic stainless steel at high temperature; Propagation de fissure a haute temperature dans un acier inoxydable austenitique

    Polvora, J.P

    1998-12-31

    This study deals with crack propagation at 650 deg C on an austenitic stainless steel referenced by Z2 CND 17-12 (316L(NN)). It is based on an experimental work concerning two different cracked specimens: CT specimens tested at 650 deg C in fatigue, creep and creep-fatigue with load controlled conditions (27 tests), tube specimens containing an internal circumferential crack tested in four points bending with displacement controlled conditions (10 tests). Using the fracture mechanics tools (K, J and C* parameters), the purpose here is to construct a methodology of calculation in order to predict the evolution of a crack with time for each loading condition using a fracture mechanics global approach. For both specimen types, crack growth is monitored by using a specific potential drop technique. In continuous fatigue, a material Paris law at 650 deg C is used to correlate crack growth rate with the stress intensity factor range corrected with a factor U(R) in order to take into account the effects of crack closure and loading ratio R. In pure creep on CT specimens, crack growth rate is correlated to the evolution of the C* parameter (evaluated experimentally) which can be estimated numerically with FEM calculations and analytically by using a simplified method based on a reference stress approach. A modeling of creep fatigue growth rate is obtained from a simple summation of the fatigue contribution and the creep contribution to the total crack growth. Good results are obtained when C* parameter is evaluated from the simplified expression C*{sub s}. Concerning the tube specimens tested in 4 point bending conditions, a simulation based on the actual A 16 French guide procedure proposed at CEA. (authors) 104 refs.

  4. Embrittlement of steels for hydrogen transport and storage under high pressure; Fragilisation des aciers destines au transport et au stockage de l'hydrogene sous haute pression

    Jouinot, P.; Gantchenko, V.; Katundi, D. [Institut Superieur de Mecanique de Paris (ISMEP-Sumeca), 93 - Saint-Ouen (France)

    2007-07-01

    This work deals with gaseous hydrogen embrittlement of steels for pipelines having a relatively high mechanical resistance (elasticity limit: 550 MPa, Grade 80). The studied materials come from 5 tube steels batch already used for hydrocarbons transport. Plates have been obtained by continuous casting followed by a hot controlled rolling: the rolling temperature is adjusted for obtaining a strain hardening in order to increase the mechanical resistance of the steel. These materials have been tested under hydrogen pressure and the resistance to hydrogen has been measured for each of them. The results show that the hydrogen embrittlement decreases when the mechanical resistance of the plate (or its hardness) increases. The inclusion state of the different steels has been quantified by images analysis at different depths in the plates. These steels contain only globular oxides or aligned aluminates. The hydrogen embrittlement increases with the amount of the globular oxides (or with the length of the aligned aluminates). Micrographic and fractographic analyses show that even small globular inclusions ({phi}=1 {mu}m) concentrate enough hydrogen to induce a crack in the material or to lead to a crack propagation. In order to estimate the homogeneity of the ferrito-perlitic structure, the thickness of ferrite bands have been measured. The hydrogen embrittlement increases as the thickness of the ferrite bands, that is to say, as the heterogeneity of the structure. Micrographs have shown that the hydrogen cracking is initiated on perlite aggregates; the crack propagates then in ferrite and joins then others perlitic areas. This study shows that relatively resistant steels (Grade 80, elasticity limit: 550 MPa) can be used for manufacturing pipelines submitted to high hydrogen pressure. (O.M.)

  5. Stainless steels low temperature nitriding; Nitruration a basse temperature de l`acier inoxydable AISI 316L. Resistance a la corrosion et proprietes tribologiques

    Roux, T.; Darbeida, A.; Von Stebut, J.; Michel, H. [Ecole Nationale Superieure des Mines, 54 - Nancy (France); Lebrun, J.P. [NITRUVID, 95 - Argenteuil (France); Hertz, D. [Framatome, 69 - Lyon (France)

    1995-12-31

    Nitrogen ions implantation of 316L stainless steel leads to monophasic diffusion layers, which are constituted of a solid solution ({gamma}{sub N}) fcc, metastable, nitrogen sur-saturated, and without order. This article shows that for 316L stainless steels,these layers improve the tribological properties without degradation of the corrosion resistance. (A.B.). 13 refs. 6 figs.

  6. Effets du taux de déformation sur la rupture ductile des aciers à haute performance : Expériences et modélisation

    Dunand, Matthieu

    2013-01-01

    The automotive industry has widely incorporated Advanced High Strength Steels sheets (AHSS) in vehicle structures due to their high strength to weight ratio: they are used to improve the vehicle safety or to reduce the vehicle weight through the use of thinner gages. At the same time, new vehicle design relies heavily on virtual prototyping practices. In the specific example of automotive structures, both the engineering of the production process and of the final product require reliable mode...

  7. Fatigue-creep of martensitic steels containing 9-12% Cr: behaviour and damage; Fatigue-fluage des aciers martensitiques a 9-12% Cr: comportement et endommagement

    Fournier, B

    2007-09-15

    It is in the framework of the research programs on nuclear reactors (generation IV) that the martensitic steels containing 9-12% Cr are studied by the CEA. Most of the structures for which they are considered will be solicited in fatigue-creep at high temperature (550 C). The aim of this work is to understand and model the cyclic behaviour and the damage of these materials. The proposed modelling are based on detailed observations studies (SEM, TEM, EBSD...). The cyclic softening is attributed to the growth of the microstructure. A micro-mechanical model based on the physical parameters is proposed and leads to encouraging results. The damage results of interactions between fatigue, creep and oxidation. Two main types of damage are revealed. A model of anticipation of service time is proposed and gives very satisfying results. The possible extrapolations are discussed. (O.M.)

  8. Comportement des poteaux mixtes acier-béton soumis aux sollicitations de type monotone. Étude expérimentale

    Cristina Câmpian

    2006-01-01

    Full Text Available For more than one hundred years the construction system based on steel or composite steel -- concrete frames became one of the more utilized types of building in civil engineering domain. For an optimal dimensioning of the structure, the engineers had to found a compromise between the structural exigency for the resistance, stiffness and ductility, on one side, and architectural exigency on the other side. Three monotonic tests and nine cyclic tests according to ECCS loading procedure were carried out in Cluj Laboratory of Concrete. The tested composite columns of fully encased type were subject to a variable transverse load at one end while keeping a constant value of the axial compression force into them. An analytical interpretation is given for the calculus of column stiffness for the monotonic tests, making a comparation with the latest versions of the Eurocode 4 stiffness formula.

  9. Study of structural modifications induced by ion implantation in austenitic stainless steel; Etude des modifications structurales induites par implantation ionique dans les aciers austenitiques

    Dudognon, J

    2006-12-15

    Ion implantation in steels, although largely used to improve the properties of use, involves structural modifications of the surface layer, which remain still prone to controversies. Within this context, various elements (N, Ar, Cr, Mo, Ag, Xe and Pb) were implanted (with energies varying from 28 to 280 keV) in a 316LVM austenitic stainless steel. The implanted layer has a thickness limited to 80 nm and a maximum implanted element concentration lower than 10 % at. The analysis of the implanted layer by grazing incidence X ray diffraction highlights deformations of austenite lines, appearance of ferrite and amorphization of the layer. Ferritic phase which appears at the grain boundaries, whatever the implanted element, is formed above a given 'threshold' of energy (produced of fluency by the energy of an ion). The formation of ferrite as well as the amorphization of the implanted layer depends only on energy. In order to understand the deformations of austenite diffraction lines, a simulation model of these lines was elaborated. The model correctly describes the observed deformations (broadening, shift, splitting) with the assumption that the expansion of the austenitic lattice is due to the presence of implanted element and is proportional to the element concentration through a coefficient k'. This coefficient only depends on the element and varies linearly with its radius. (author)

  10. Confrontation de composites textile-mortier (TRC) à renfort carbone ou acier pour le renforcement d'éléments de maçonnerie.

    Contamine, Raphaël; Plassiard, Jean-Patrick; Perrotin, Pascal

    2015-01-01

    International audience Une forte demande émerge concernant les techniques de renforcement de structures maçonnées existantes. En réponse, le renforcement par moulage au contact de composites à renfort textile et matrice cimentaire communément nommés textile-mortier (textile reinforced concrete, TRC) s'est développé au cours de ces cinq dernières années. Un essai permettant de caractériser le comportement en traction directe du TRC ainsi que le comportement de l'ancrage TRC/maçonnerie a ét...

  11. Modelling of the ultrasonic inspection of steel tubes with longitudinal defects; Modelisation du controle ultrasonore de tubes d`acier presentant des defauts de type ``entaille longitudinale``

    Mephane, M

    1998-12-31

    A model has been developed in order to simulate the ultrasonic inspection of steel tubes in the Vallourec control configuration. The model permits to simulate the control of steel tubes showing longitudinal defects located near the internal or external surface of tubes which appear during the rolling process. To detect this kind of defect, the probe is placed in an incident place perpendicular to the tube`s axis. The probe is in front of the external surface of the tube. The main characteristics of the model is to assume that the field radiated in the material does not depend on the probe`s position. This assumption permits to treat separately the field retracted in the material and the interaction between the defect and the ultrasonic beam. The focal plane is located in the material, so the plane waves approximation is applied where the waves front are assumed plane and parallel. The parallel refracted beam becomes divergent after reflection on the internal surface of tube. To treat the beam divergence, an amplitude weighting coefficient is then calculated by mean of the energy conservation of a tube of rays before and after reflection, following the Snell laws. This model can predict the edge diffraction echoes, the echoes issued from the corner effect, and also the mode conversion echoes. It has been validated on artificial notches, and on some natural defects. A comparison between experimental and modelling results shows a good agreement. (author) 39 refs.

  12. Economical steel lightweight technology for body systems of the next generation; Une technique economique de construction legere en acier pour les systemes de carrosserie de prochaine generation

    Gruneklee, A.; Patberg, L.; Floth, T.; Osburg, B. [Thyssen Krupp (Germany)

    2004-10-01

    Complete text of publication follows: The Auto Division of ThyssenKrupp Stahl AG through the NSB project developed an innovative concept with significant lightweight potential for a body-in. white, with the benefits of innovative profiles combined with a conventional shell construction and the application of optimal steel materials. In order to make realistic comparisons throughout the project, a reference vehicle from the compact van class and produced in large series, was chosen. The NSB project successfully achieved a weight reduction potential of 24 %, 75 kg in the body-in-white in comparison to the reference vehicle and this achievement created no significant increase in manufacturing costs. The NSB concept was checked in detail by all involved experts with respect to manufacturing and proven to be feasible.

  13. Development of industrial production of ultrafine grained steel in tandem hot strip mill; Production industrielle d'acier a grain ultra-fin au train a bandes

    Kurahashi, R.; Hakomori, K.; Chikushi, I.; Morimoto, T. [Nakayama Steel Works, Ltd. (Japan); Yanagimoto, J. [Tokyo Univ. (Japan); Takaoka, S. [Kawasaki Heavy Industries Ltd., Kobe (Japan)

    2005-04-01

    Based on a model of microstructure evolution, an appropriate rolling schedule has been worked out to produce ultrafine grained steel (2 to 5 {mu}m) on the hot strip mill. This rolling schedule is characterized by a large reduction in the finishers followed by strong cooling. Implementing such a rolling schedule on a conventional HSM raises major problems: increased rolling torque and force, lowered crown and shape control, disturbed looper control, accelerated roll damage, increased slip between strip and roll, insufficient cooling efficiency. These problems have been solved on the new Nakayama HSM by introducing innovative processes such as: single roll drive with different diameter and a new CVC, curtain wall cooling in the finisher, low inertia hydraulic looper, new high-speed steel rolls with solid lubrication. (authors)

  14. Radio-oxidation of an EPDM elastomer under weak or strong ionising radiations: measurement and modelling of dioxygen consumption; Radio-oxydation d'un elastomere de type EPDM lors d'irradiations faiblement ou fortement ionisantes: mesure et modelisation de la consommation de dioxygene

    Dely, N

    2005-10-15

    Usually, the irradiation of polymers under ionising radiations occurs in air that is in the presence of oxygen. This leads to a radio oxidation process and to oxygen consumption. Our material is an EPDM elastomer (ethylene propylene 1,4 hexadiene) used as insulator in control-command cables in nuclear plants (Pressurised Water Reactor). A specific device has been conceived and built up during this PhD work for measuring very small oxygen consumptions with an accuracy of around 10%. Ionising radiations used are electrons at 1 MeV and carbon ions at 11 MeV per nucleon. Under both electron and ion irradiations, the influence of oxygen pressure on oxygen consumption has been studied in a very large range: between 1 and 200 mbar. In both cases, the yield of oxygen consumption is constant in-between 200 and 5 mbar. Then, at lower pressures, it decreases appreciably. On the other hand, the oxygen consumption during ion irradiation is four times smaller than during electron irradiation. This emphasizes the role of the heterogeneity of the energy deposition at a nano-metric scale. The adjustment of the experimental results obtained during electron irradiation with the general homogeneous steady-state kinetic model has allowed extracting all the values of the kinetic parameters for the chosen mechanism of radio oxidation. The knowledge of these numbers will allow us to face our results obtained during ion irradiation with a heterogeneous kinetic model under development. (author)

  15. Nuclear structure of weakly bound radioactive nuclei through elastic and and inelastic scattering on proton. Impacts of the couplings induced by these exotic nuclei on direct reactions; Structure de noyaux radioactifs faiblement lies par diffusions elastiques et inelastiques sur proton. Effets des couplages induits par ces noyaux exotiques sur les reactions directes

    Lapoux, V

    2005-09-15

    Information on the structure, spectroscopy and target interaction potentials of exotic nuclei can be inferred by interpreting measured data from direct reactions on proton such as elastic or inelastic scattering of proton (p,p') or one-nucleon transfer reaction (p,d). A series of experimental results has been obtained at the GANIL facilities on the setting composed of the MUST telescope array used for the detection of light charged-particles and of CATS beam detectors. This setting aims at measuring reactions on light proton or deuteron targets through reverse kinematics. Particularly, results on C{sup 10}, C{sup 11} and on direct reactions with the He{sup 8} beam of Spiral are presented. The first chapter is dedicated to the description of the most important theories concerning the nucleus. The experimental tools used to probe the nucleus are reported in the second chapter. The third and fourth chapters present the framework that has allowed us to analyse results from (p,p') and (p,d) reactions on weakly bound exotic nuclei. The last chapter is dedicated to the description of future experimental programs. (A.C.)

  16. Metabolic derivatives of alcohol and the molecular culprits of fibro-hepatocarcinogenesis: Allies or enemies?

    Boye, Alex; Zou, Yu-Hong; Yang, Yan

    2016-01-01

    Chronic intake of alcohol undoubtedly overwhelms the structural and functional capacity of the liver by initiating complex pathological events characterized by steatosis, steatohepatitis, hepatic fibrosis and cirrhosis. Subsequently, these initial pathological events are sustained and ushered into a more complex and progressive liver disease, increasing the risk of fibro-hepatocarcinogenesis. These coordinated pathological events mainly result from buildup of toxic metabolic derivatives of alcohol including but not limited to acetaldehyde (AA), malondialdehyde (MDA), CYP2E1-generated reactive oxygen species, alcohol-induced gut-derived lipopolysaccharide, AA/MDA protein and DNA adducts. The metabolic derivatives of alcohol together with other comorbidity factors, including hepatitis B and C viral infections, dysregulated iron metabolism, abuse of antibiotics, schistosomiasis, toxic drug metabolites, autoimmune disease and other non-specific factors, have been shown to underlie liver diseases. In view of the multiple etiology of liver diseases, attempts to delineate the mechanism by which each etiological factor causes liver disease has always proved cumbersome if not impossible. In the case of alcoholic liver disease (ALD), it is even more cumbersome and complicated as a result of the many toxic metabolic derivatives of alcohol with their varying liver-specific toxicities. In spite of all these hurdles, researchers and experts in hepatology have strived to expand knowledge and scientific discourse, particularly on ALD and its associated complications through the medium of scientific research, reviews and commentaries. Nonetheless, the molecular mechanisms underpinning ALD, particularly those underlying toxic effects of metabolic derivatives of alcohol on parenchymal and non-parenchymal hepatic cells leading to increased risk of alcohol-induced fibro-hepatocarcinogenesis, are still incompletely elucidated. In this review, we examined published scientific findings on how alcohol and its metabolic derivatives mount cellular attack on each hepatic cell and the underlying molecular mechanisms leading to disruption of core hepatic homeostatic functions which probably set the stage for the initiation and progression of ALD to fibro-hepatocarcinogenesis. We also brought to sharp focus, the complex and integrative role of transforming growth factor beta/small mothers against decapentaplegic/plasminogen activator inhibitor-1 and the mitogen activated protein kinase signaling nexus as well as their cross-signaling with toll-like receptor-mediated gut-dependent signaling pathways implicated in ALD and fibro-hepatocarcinogenesis. Looking into the future, it is hoped that these deliberations may stimulate new research directions on this topic and shape not only therapeutic approaches but also models for studying ALD and fibro-hepatocarcinogenesis. PMID:26755860

  17. Metabolic derivatives of alcohol and the molecular culprits of fibro-hepatocarcinogenesis: Allies or enemies?

    Boye, Alex; Zou, Yu-Hong; Yang, Yan

    2016-01-01

    Chronic intake of alcohol undoubtedly overwhelms the structural and functional capacity of the liver by initiating complex pathological events characterized by steatosis, steatohepatitis, hepatic fibrosis and cirrhosis. Subsequently, these initial pathological events are sustained and ushered into a more complex and progressive liver disease, increasing the risk of fibro-hepatocarcinogenesis. These coordinated pathological events mainly result from buildup of toxic metabolic derivatives of al...

  18. The 50th ASMS Conference on Mass Spectrometry and Allied Topics

    Brancia, Francesco L.

    2002-01-01

    Development of new mass spectrometers and implementation of new analytical methods were the central themes of the conference. The majority of oral presentations and posters were concerned with the application of mass spectrometry to pharmaceutical and biotechnological research.

  19. Noma in a child with acute leukaemia: when the 'face of poverty' finds an ally.

    Singh, Amitabh; Mandal, Anirban; Seth, Rachna; Kabra, Sushil Kumar

    2016-01-01

    A 2-year-6-month old, appropriately immunised, well-thriving boy, symptomatic for the past 6 months, presented with recurrent fever, progressive pallor, lymphadenopathy and a raw area on the right cheek, with discharging sinus. The necrotising infection of the face developed after one and half months of febrile illness. This febrile illness with bicytopaenia was diagnosed as enteric fever and treated with antibiotics. Skin grafting was performed for the full-thickness defect of the face. The patient continued to have a non-healing oral ulcer with progressive pallor and was finally diagnosed as having acute lymphoblastic leukaemia. Immunodeficiency was ruled out by appropriate investigations. Noma is an indirect measure of extreme poverty, but malignancy is known to predispose to this debilitating condition. The worldwide incidence of Noma is reported to be 30,000-140,000, with a preponderance in sub-Saharan Africa. This case emphasises the need for a thorough search for the underlying illness predisposing to a rare opportunistic infection such as Noma in a well-thriving child. PMID:26740267

  20. Engaging Allied-Health Students with Virtual Learning Environment Using Course Management System Tutorial Site

    Andrew Nguyen

    2013-11-01

    Full Text Available Human Anatomy and Physiology I and II are major gateway courses into nursing and other health related sciences careers.  Being a New York City community college, the students at Queensborough Community College are highly diverse not only in their ethnic and cultural background, but also in the levels of preparedness. When they take Human Anatomy-Physiology I as the first pre-requisite class, many are either freshman or returning students after a hiatus. Many students lack formal training in Science or Biology and are overwhelmed by the depth and immensity of the material presented in above courses. Though the enrollment for these classes is heavy; above factors lead to high attrition rates. However one common feature of this new generation of students is their access and familiarity to the internet, digital technology and other techno gadgets such as smart phones, tablets, etc. Though it is hard for us to accept, it is a fact that today’s generation of students (generation Y is more techno savvy and these gadgets engage (or distract them more than books. This indicated a clear need for developing alternatives to traditional teaching methods to engage students of an urban community college setting. We decided to investigate if a web-based supplemental tutorial would help engage these students and thus help them build their course knowledge base to improve their academic performance.

  1. Possible allied ballistic missile defense systems: Related guidance and control requirements

    Roche, C.; Cotillard, C.

    1995-01-01

    This document discusses several different types of Ballistic Missile Defense Systems for NATO for both medium and long range attacks. The feasibility, technological assessment and forecasting, and defense architecture is presented, along with each system's capabilities.

  2. Use of radioisotopes and radiation in medicine and allied fields and their public health implications

    Radioisotopes have made an impact on medicine and on biological studies in general. They have extended the range of diagnostic radiology and increased the scope of radiotherapy. They are now used in investigations of thyroid function and body composition, erythrocytes survival, plasma volume measurement, vitamin B12 absorption, and insulin assay. In neurological and neuro-surgical practice, brain scanning using Hg197 or Tc99sup(m) in the form of pertechnetate is used to establish the diagnosis and localization of intra-cranial lesions. In radiotherapy, Co-60 has enabled the production of therapeutic apparatus with sources from a few hundred curies up to 3,000 or more. Radioactive iodine is used to determine thyroid abnormality, as well as reduce hyper-activity of the gland. P-32 is used effectively in some haematological disorders, particularly polycythaemia vera, and found to be good beta ray emitter for the treatment of superficial skin conditions. Au-198 colloid solution could treat serious effusion by insertion into the pleural or peritoneal cavity. For public health protection, doses to an individual which could cause a somatic hazard are considerably less than those considered by international protection standards to be acceptable

  3. Insider, Outsider, Ally, or Adversary: Parents of Youth with Learning Disabilities Engage in Educational Advocacy

    Duquette, Cheryll; Fullarton, Stephanie; Orders, Shari; Robertson-Grewal, Kristen

    2011-01-01

    The purpose of this qualitative study was to examine the educational advocacy experiences of parents of adolescents and young adults identified as having a learning disability (LD) through the lens of four dimensions of advocacy. Seventeen mothers of youth with LD responded to items in a questionnaire and 13 also engaged in in-depth interviews. It…

  4. Allied-Signal's Mary Good Analyzes New Threats to Chemical Profession.

    Chemical and Engineering News, 1986

    1986-01-01

    Recounts an interview with chemist, educator, and executive Mary Good. Opinions are expressed about the status of basic research in chemistry, the relationship of chemical research to several federal agencies, the value of education in chemistry, and the perceptions of the public regarding the chemical community, particularly the health risks. (TW)

  5. Final report for Allied-Signal Aerospace Company, Kansas City Division on protective glove permeation analysis

    Swearengen, P.M.; Johnson, J.S.; Priante, S.J. [Lawrence Livermore National Lab., CA (United States)

    1990-06-22

    We conducted 25 separate glove fabric permeation studies during this project. The permeations were carried out in the small (1 inch) glass ASTM cell. One other permeation study was carded out with a large (two inch) modified ASTM cell for comparison with the small cell results. We also compared the LLNL procedure from both large and small cells with the standard ASTM test procedure which uses a liquid solution on the breakthrough side of the fabric (the liquid is then sampled on a periodic basis). In all comparisons we observed a close-correlation in breakthrough times between the two procedures and the two cell sizes. In the course of this study, we tested ten different glove materials. These included neoprene (original ASTM round-robin sheet stock, 16 mil thickness), Edmont Sol-Vex (nitrile), Pioneer nitrile, Pioneer Pylox (polyvinyl chloride), North Viton (trademark for fluoroelastomers), North SilverShield (Norfoil, trademark for a flexible metallized laminate), Safety 4 4H (patented plastic laminate), and QRP PolyTuff (polyurethane) 20G-2000 (5 mil), 23G-2300 (1.5 mil), and 25G-2500 (1.5 mil). Three of the glove materials, Viton and Silver Shield (North), and 4H (Safety 4), did not allow any permeation measurable by our system to either 1,2-dichloroethane or 3% diphenylmercury (in 1,2-dichloroethane) for a period greater than six hours. A fourth material, QRP Poly Tuff 2OG-2000, did not allow any measurable penetration of Asilamine (an aromatic diamine) for a time pedod of greater than 4 hours. Breakthrough times and curves were obtained for all other tested materials. Eleven different chemicals were used to challenge the glove materials. These included acetone, Asilamine, 1,2-dichloroethane, dichloromethane, isopropyl alcohol, a mixture of 3% diphenylmercury in 1,2-dichloroethane (w/w), phenol, and lso Verre Stripper, 4,4`-methylenedianil (MDA), 1,3-phenylenediamine (MPDA), and Shell Epon (R) curing agent Z.

  6. Final report for Allied-Signal Aerospace Company, Kansas City Division on protective glove permeation analysis

    We conducted 25 separate glove fabric permeation studies during this project. The permeations were carried out in the small (1 inch) glass ASTM cell. One other permeation study was carded out with a large (two inch) modified ASTM cell for comparison with the small cell results. We also compared the LLNL procedure from both large and small cells with the standard ASTM test procedure which uses a liquid solution on the breakthrough side of the fabric (the liquid is then sampled on a periodic basis). In all comparisons we observed a close-correlation in breakthrough times between the two procedures and the two cell sizes. In the course of this study, we tested ten different glove materials. These included neoprene (original ASTM round-robin sheet stock, 16 mil thickness), Edmont Sol-Vex (nitrile), Pioneer nitrile, Pioneer Pylox (polyvinyl chloride), North Viton (trademark for fluoroelastomers), North SilverShield (Norfoil, trademark for a flexible metallized laminate), Safety 4 4H (patented plastic laminate), and QRP PolyTuff (polyurethane) 20G-2000 (5 mil), 23G-2300 (1.5 mil), and 25G-2500 (1.5 mil). Three of the glove materials, Viton and Silver Shield (North), and 4H (Safety 4), did not allow any permeation measurable by our system to either 1,2-dichloroethane or 3% diphenylmercury (in 1,2-dichloroethane) for a period greater than six hours. A fourth material, QRP Poly Tuff 2OG-2000, did not allow any measurable penetration of Asilamine (an aromatic diamine) for a time pedod of greater than 4 hours. Breakthrough times and curves were obtained for all other tested materials. Eleven different chemicals were used to challenge the glove materials. These included acetone, Asilamine, 1,2-dichloroethane, dichloromethane, isopropyl alcohol, a mixture of 3% diphenylmercury in 1,2-dichloroethane (w/w), phenol, and lso Verre Stripper, 4,4'-methylenedianil (MDA), 1,3-phenylenediamine (MPDA), and Shell Epon (R) curing agent Z

  7. More than an Ally: A Successful White Teacher Who Builds Solidarity with His African American Students

    Boucher, Michael Lee, Jr.

    2016-01-01

    This qualitative case study provides a counternarrative to the literature of White teachers who are unsuccessful in bridging the achievement gap and disrupts the assumed meaning of solidarity between successful White teachers and their African American students. As part of successful classroom practice, this teacher interrogated his own whiteness…

  8. Nursing Home Social Workers and Allied Professionals: Enhancing Geriatric Mental Health Knowledge

    Bonifas, Robin P.

    2011-01-01

    Research has highlighted the challenges social services professionals face in providing quality psychosocial care to persons living in skilled nursing facilities (SNFs). A primary area of difficulty is addressing the needs of persons with mental health conditions, including problematic behaviors associated with dementia. This study evaluated the…

  9. Phylogenetic reconstruction of Chirita and allies (Gesneriaceae)with taxonomic treatments

    Yin-Zheng WANG; Ru-Bing MAO; Yan LIU; Jia-Mei LI; Yang DONG; Zhen-Yu LI; James F.SMITH

    2011-01-01

    Chirita D.Don,a large genus in the subfamily Cyrtandroideae of Gesneriaceae,has been the subject of much debate whether it is a natural group or not.In addition,the highly heterogeneous Chirita has also been very problematic with regard to delimitation and subdivision.Here we used the nrDNA internal transcribed spacer and cpDNA trnL-F for molecular phylogenetic analaysis,combined with morphological data.Our results suggest that Chirita is an artificial,polyphyletic genus.The most important character that defines Chirita,the dorso-ventrally oblique and bilamellar stigma,has evolved convergently in different clades of diandrous Cyrtandroideae.Chirita sensu stricto only includes the species of Chirita sect.Chirita,whereas Chirita sect.Microchirita is an independent clade located at the basal node of the phylogenetic tree.Chirita sect.Liebigia is closely related to Didymocarpus with an entire stigma unlike other species of Chirita.The species of Chirita sect.Gibbosaccus,Chiritopsis,Primulina,and Wentsaiboea form a monophyletic group that is sister to a strongly supported clade comprising four monotypic genera Paralagarosolen,Calcareoboea,Petrocodon,and Tengia.We further analyzed the morphological evolutionof Chirita and identified a series of morphological synapomorphies for the monophyletic groups revealed herein,and thereby provide a taxonomic treatment in this study.

  10. Applications and Benefits of Computer Based Education for Medical and Allied Health Education

    Caldwell, Robert M.

    1981-01-01

    Advances in computer technology have provided unique opportunities to apply computer systems to a wide variety of medical and health care functions. One area which holds great potential for using computer systems is medical and health science education. The following paper focuses on

  11. A Review of the Flammability Factors of Kenaf and Allied Fibre Reinforced Polymer Composites

    Lee, C.H.; Mohd. Sapuan Salit; M. R. Hassan

    2014-01-01

    Natural fibre is a well-known reinforcement fibre in polymer-matrix Composites (PMC) lately. Natural fibre has fast growing and abundance properties which make it available at very low cost. For kenaf fibre there is long lists of research projects which have been done regarding its behaviour, and properties and modification made to it. In this paper, fire flammability is the main concern for natural fibre reinforced polymer (NFRP) composites especially kenaf fibre. To estimate its flammabilit...

  12. Allies against Hate: A School-Based Diversity Sensitivity Training Experience

    Nikels, Holly J.; Mims, Grace Ann; Mims, Matthew J.

    2007-01-01

    This article describes a nine-year partnership between a counselor education program and school district forged to address the rapidly expanding diversity in a Midwestern city. Approximately 350 counselors-in-training have participated in a service-learning project required in their group counseling theory class to facilitate small…

  13. A comparative wear study on Al-Li and Al-Li/SiC composite

    Okumus, S. Cem, E-mail: cokumus@sakarya.edu.tr; Karslioglu, Ramazan, E-mail: cokumus@sakarya.edu.tr; Akbulut, Hatem, E-mail: cokumus@sakarya.edu.tr [Sakarya University Engineering Faculty, Department of Metallurgical and Materials Engineering, Esentepe Campus, 54187, Sakarya (Turkey)

    2013-12-16

    Aluminum-lithium based unreinforced (Al-8090) alloy and Al-8090/SiCp/17 vol.% metal matrix composite produced by extrusion after spray co-deposition. A dry ball-on disk wear test was carried out for both alloy and composite. The tests were performed against an Al{sub 2}O{sub 3} ball, 10 mm in diameter, at room temperature and in laboratory air conditions with a relative humidity of 40-60%. Sliding speed was chosen as 1.0 ms{sup −1} and normal loads of 1.0, 3.0 and 5.0 N were employed at a constant sliding distance of 1000 m. The wear damage on the specimens was evaluated via measurement of wear depth and diameter. Microstructural and wear characterization was carried out via scanning electron microscopy (SEM). The results showed that wear loss of the Al-8090/SiC composite was less than that of the Al-8090 matrix alloy. Plastic deformation observed on the wear surface of the composite and the matrix alloy, and the higher the applied load the greater the plastic deformation. Scanning electron microscopy examinations of wear tracks also reveal that delamination fracture was the dominant wear mechanism during the wear progression. Friction coefficient was maximum at the low applied load in the case of the Al-8090/SiC composite while a gradual increase was observed with applied load for the matrix alloy.

  14. Influencing Factors of Radiological Technologist Image of Allied Health College Students

    Perception level and social position of radiological technologist influence satisfaction level of their job. This study aims to use foundational data to improve perception level and social position of radiological technologists. We conducted interviews and a fill-out survey with 233 students who have been majoring in health-related fields at five universities and colleges located in Busan and who finished internship programs. The study analyzed 233 answer sheets excluding 17 inadequate answer sheets using T-test, ANOVA and multiple regression analysis with SAS9.1. The mean score of perception level was 3.33±0.56. The personal image of radiological technologist showed the best score(3.43±0.56) whereas the social image showed the worst(3.12±0.79). According to the classification of the subject, the answer, 'radiological technologist is specialized job', showed the best score(3.99±0.79). The answer 'radiological technologist suffered from less stress and workload than others when they work usually' showed the worst score(2.88±0.98). According to the classification of each health-related major, the mean score of students who are a major in the department of the radiological technologist was the best(3.46±0.46) and the students who are major in department of the physical therapy was the worst(3.24±0.40). The radiological technologist have to effort to make positive image in the hospital. It is possible to be developed their knowledge and professionalism by cooperating between school and hospital as well as advertising with mass madia.

  15. Enhancement of achievement and attitudes through individualized learning-style presentations of two allied health courses.

    Miller, J A

    1998-01-01

    This investigation analyzed the effects of the instructional resource Programmed Learning Sequence (PLS) on the achievement and attitudes of college students and correlated the findings with the individuals' learning styles. The subjects were enrolled in Sonography I and Cross-Sectional Anatomy in a college of health-related professions. Both classes were administered the Productivity Environmental Preference Survey to identify learning-style strengths, and alternately presented with lessons using a PLS in a book format and traditional lectures. The sonography class also was exposed to a PLS in multimedia computer format. The Semantic Differential Scale measured the students' attitudes comparing the instructional methods experienced, and class examinations measured content mastery. In both classes, examination scores were significantly higher (effect size for the sonography class was 1.42; for the anatomy class, 0.63) and students' attitude scores were significantly higher when PLS rather than the traditional method was used. In the sonography class, achievement was significantly higher with the book PLS than with the computer PLS (effect size, 1.11). Significant correlations emerged between learning-style elements and achievement: students who preferred learning with the book PLS required more quiet in the environment than did those who preferred the computer PLS; students who preferred learning traditionally and with the computer PLS required more light than those preferring the book PLS; and students who preferred learning with an authority figure favored the traditional method. Examination of the data for other correlations between learning-style preferences and attitudes using the book PLS also revealed many other significant findings, demonstrating its ability to accommodate diverse styles. PMID:9785183

  16. Baltic States get security reaffirmation from their key ally, the US / Linas Jegelevicius

    Jegelevicius, Linas

    2016-01-01

    Riias toimunud Balti riikide presidentide ja Ameerika Ühendriikide asepresidendi Joe Bideni kohtumisel arutleti Balti riikide julgeoleku ja julgeolekualase koostöö teemadel. Joe Biden kinnitas Ameerika Ühendriikide valmisolekut tulla võimaliku rünnaku korral Balti riike kaitsma

  17. Potato psyllids and their bacterial allies: Two fronts in the war against zebra chip disease.

    Potato psyllid is a major pest of potato in the western United States that transmits the pathogen that causes zebra chip disease. Potato psyllids, like all psyllids, have close associations with bacterial endosymbionts living within them. These endosymbionts may be obligate or facultative, and the...

  18. Deployment-related mental health support: comparative analysis of NATO and allied ISAF partners

    Eric Vermetten

    2014-08-01

    members. Conclusion: This analysis demonstrated that in all five partners state-of-the-art preventative mental healthcare was included in the last deployment in Afghanistan, including a positive approach towards strengthening the mental resilience, a focus on self-regulatory skills and self-empowerment, and several initiatives that were well-integrated in a military context. These initiatives were partly/completely implemented by the military/colleagues/supervisors and applicable during several phases of the deployment cycle. Important new developments in operational mental health support are recognition of the role of social leadership and enhancement of operational peer support. This requires awareness of mental problems that will contribute to reduction of the barriers to care in case of problems. Finally, comparing mental health support services across countries can contribute to optimal preparation for the challenges of military deployment.

  19. Dealing with opponents of industry: Let the allies work for you

    Full text: The opponents of industry, and most Green campaigning groups, thrive on controversy. Opponents of industry, and of the nuclear industry in particular, can expect to find a more receptive public audience than do the companies they attack. Therefore, there is little to be gained by industry entering into direct conflict, or even high-profile debate, with opponents. Industry spokesmen do not rate as being trustworthy in the eyes of the public. And it does not pay to directly attack the credibility, however justified such criticisms are, of the likes of Greenpeace. In a polarised debate, if your company is seen to be partisan and the opponents to be neutral, the public will gravitate towards the opponents. The way forward is to influence the forces which ran help industry establish the middle ground to dissipate the tension. The problem for industry is not so much that it has opponents, but that it does not have enough third party advocates to mediate in disputes. Therefore, the first step is to identify the key issues facing a company or industry. The second, is to work with credible people and organisations to establish independent mechanisms which can prevent an unfavourable climate building up around those issues. The art of dealing with opponents, is the art of identifying such mechanisms (people, organisations and professions) to influence an increasingly cynical and distrusting public. These opinion-formers should be the main focus of a communications strategy designed to counter opponents. They are the conduit through which to influence public opinion in general. For instance, the debate surrounding the incidence of leukaemia around nuclear sites cannot be answered by the industry using the facts, scientific evidence, or by entering into a noisy dialogue with opponents. However, the medical profession, along with scientists working outside the nuclear industry, is in a position to shift public concern away from nuclear sites. BNFL has promoted research into leukaemia by independent bodies. The results of this work discredited the view that sites such as Sellafield were responsible for the so-called leukaemia clusters. This has resulted in the debate becoming less polarised. The media is not so interested in the issue. This issue no longer offers fertile ground for opponents and its impact is much reduced. When there is a whole community of third party advocates which can explain an issue in its broader context, a company or industry can take a low-profile. No news can often be good news. In today's society the values people hold cannot be ignored. To continue in business, industry has to be acceptable to society. Otherwise politicians, thinking short-term about their popularity, will become hostile to any particular activity an industry might launch. The lesson of the Brent Spar oil platform must not be forgotten. The world's largest company, with all the facts, scientific evidence and resources at its disposal, lost the battle to dump the platform at sea. It was beaten by bad science, lies and emotion, in a polarised debate. Most European governments opposed Shell because their publics did: some with bombs. The lesson is that the public likes to feel in control of developments, progress and industry. It does not trust industry. If an industry or company does not have an effective screen of third party advocates to answer public concerns, the opponents will win the day. The public will listen to the more credible voices in society, such as, academic institutions, the medical profession, representative bodies, the media and the like. If the public feels that it has been consulted and that the issue is 'under control' there will be little ground for polarisation. The scare tactics of extreme opponents will not work. In the modern world, when peoples lives are often out of control, people need to be reassured that society is managing issues, industry and development. That reassurance must come from holding a dialogue. It is impossible for the public to love industry; it is not necessary, and perhaps it is not

  20. Preparing LGBTQ-Allies and Combating Homophobia in a U. S. Teacher Education Program

    Clark, Caroline T.

    2010-01-01

    Interns in a US teacher education program were surveyed regarding their attitudes towards diversity, particularly issues of sexuality, their feelings of "cultural competence" around diversity, and the repertoires of practices and resources they feel prepared to draw on in their work with middle and high schools students (11-18 year olds). Analysis…

  1. With no way out and with no allies: Riots in French "banlieues"

    Filipović Mirko

    2006-01-01

    Full Text Available Riots in French "banlieues" can be properly understood only within a context of the French economic and social history in the last few decades. "Trente glorieuses", the increase of the immigrant population, French "welfare state" and urban politics, the effects of the economic crisis of the 70`s, dismantling and marginalization of the working class environment, concentration of the unemployment and poverty in the "banlieues", segregation and ghettoization - these are the necessary elements of any sociological interpretation of the actual crisis. Between the "urban poverty" and the riots, several mediations have also an important impact: new security policy and police violence - the evolution of Welfare state towards the Penal state, new forms of racism and social exclusions, inefficiency of the "Republican model of integration", suburban youth sub-culture as an attempt of neutralizing the growing stigma etc. Persistent treating of a segment of citizenry as suspect, intrinsically prone to violence - as potential enemies, could prove to be, in the future, a self-fulfilling prophecy.

  2. ANALYSIS OF CAPITAL STRUCTURE AND EFFICIENCY OF CAPITAL EMPLOYED IN AGRO-ALLIED FIRMS IN NIGERIA

    Nsikan E Bassey; C.J. Arene; B.C. OKPUKPARA

    2014-01-01

    The study examines and compares the capital structure and efficiency of capital employed between listed and unlisted agro-based firms in Nigeria. Data collected from 88 agro-based firms using random sampling technique for the period 2005-2010 were analysed using Z-test, Capital Structure Ratio (CSR) and Return on Capital Employed Ratio (ROCE) analysis as well as descriptive statistics. The result revealed significant differences between the capital structure of listed and listed agro-based fi...

  3. ANALYSIS OF CAPITAL STRUCTURE AND EFFICIENCY OF CAPITAL EMPLOYED IN AGRO-ALLIED FIRMS IN NIGERIA

    Nsikan E. BASSEY

    2014-11-01

    Full Text Available The study examines and compares the capital structure and efficiency of capital employed between listed and unlisted agro-based firms in Nigeria. Data collected from 88 agro-based firms using random sampling technique for the period 2005-2010 were analysed using Z-test, Capital Structure Ratio (CSR and Return on Capital Employed Ratio (ROCE analysis as well as descriptive statistics. The result revealed significant differences between the capital structure of listed and listed agro-based firms. Listed agro-based firms recorded the highest debt to equity ratio than their unlisted counterpart. Short term debts also constituted a greater percentage of the total debt ratios of both sample groups. Unlisted agro firms were more efficient than listed firms in terms of return on capital employed. Accordingly, series of recommendations have also been offered.

  4. Leadership content important in athletic training education with implications for allied health care.

    Kutz, Matthew R; Scialli, Joan

    2008-01-01

    A two-phase exploratory and comparative research study using a Delphi technique and a web-based national survey was done to determine leadership content (i.e., theories, styles, or practices) important to include in athletic training education. Eighteen athletic training experts participated in the Delphi technique, followed by 161 athletic trainers completing the national survey. Consensus of experts was reached after two rounds (77% interrater agreement, alpha = 0.80 and alpha = 0.93 per respective round) and identified 31 leadership content items important to include in athletic training education. The national sample then rated importance of each leadership content area for inclusion in four types of athletic training education programs (entry-level baccalaureate, entry-level master's degree, postgraduate certifications, and doctoral degree). The respondents ranked the leadership content in order of importance according to mean (mean = 1.53 +/- 0.84 to 2.55 +/- 0.55; scale, 0-3). Twenty-two content items (63%) were rated at least "very important" (mean > or = 2.0). Exploratory factor analysis established construct validity and organized leadership content by three factors: managerial leadership and knowledge management; leadership theories; and leadership issues, trends, and policies (alpha = 0.84-0.91). Repeated-measures analysis of variance (Sidak post-hoc adjustments) established criterion-related concurrent validity, which found increasing levels of importance as education type progressed (F = 4.88, p = 0.003-32.56, p = 0.000). Adding leadership content within athletic training enhances the professionalization of students, facilitates leadership competency among students and practicing professionals enrolled in postcertification educational programs, and facilitates job placement and role. PMID:19157049

  5. Influencing Factors of Radiological Technologist Image of Allied Health College Students

    Eom, Jong Kwon; Shin, Seong Gyu [Dept. of Radiology, Dong A University Medical Center, Pusan (Korea, Republic of)

    2012-03-15

    Perception level and social position of radiological technologist influence satisfaction level of their job. This study aims to use foundational data to improve perception level and social position of radiological technologists. We conducted interviews and a fill-out survey with 233 students who have been majoring in health-related fields at five universities and colleges located in Busan and who finished internship programs. The study analyzed 233 answer sheets excluding 17 inadequate answer sheets using T-test, ANOVA and multiple regression analysis with SAS9.1. The mean score of perception level was 3.33{+-}0.56. The personal image of radiological technologist showed the best score(3.43{+-}0.56) whereas the social image showed the worst(3.12{+-}0.79). According to the classification of the subject, the answer, 'radiological technologist is specialized job', showed the best score(3.99{+-}0.79). The answer 'radiological technologist suffered from less stress and workload than others when they work usually' showed the worst score(2.88{+-}0.98). According to the classification of each health-related major, the mean score of students who are a major in the department of the radiological technologist was the best(3.46{+-}0.46) and the students who are major in department of the physical therapy was the worst(3.24{+-}0.40). The radiological technologist have to effort to make positive image in the hospital. It is possible to be developed their knowledge and professionalism by cooperating between school and hospital as well as advertising with mass madia.

  6. Intelligence, Global Terrorism and Higher Education: Neutralising Threats or Alienating Allies?

    Saeed, Tania; Johnson, David

    2016-01-01

    The British Counter-Terrorism and Security Act 2015 appears to have drawn universities into the security apparatus of the state. Academics and administrators have been compelled to comply with measures aimed at monitoring the activities of mostly Islamic student societies. While it is not inconceivable that universities are exploited as sites for…

  7. A Review of the Flammability Factors of Kenaf and Allied Fibre Reinforced Polymer Composites

    C. H. Lee

    2014-01-01

    Full Text Available Natural fibre is a well-known reinforcement fibre in polymer-matrix Composites (PMC lately. Natural fibre has fast growing and abundance properties which make it available at very low cost. For kenaf fibre there is long lists of research projects which have been done regarding its behaviour, and properties and modification made to it. In this paper, fire flammability is the main concern for natural fibre reinforced polymer (NFRP composites especially kenaf fibre. To estimate its flammability, a wide range of factors can be considered such as fibre content, type of matrices, pH conditions, treatment, and fire retardant (FR filler’s type. The most important criteria are the ignition time, rate of propagation, and fire behavior. thermogravimetric analysis (TGA, different scanning calorimetric (DSC, and dynamic mechanical analysis (DMA are the three most famous methods used to investigate the fire behaviour of composites.

  8. Importance of clinical skills exam: An opportunity for allied healthcare students

    Faisal Khan; Sultan Salahuddin; Farooq Khan

    2014-01-01

    The clinical skills remain crucial for effective patient care in today’s medical environment. Research works have shown that students lack clinical skills even after graduation. One reason which could be the cause is that the faculty is unable to evaluate the students on the clinical skills exam, if the student is informed about the significance of clinical skills and about a certification exam structure which not only evaluates the student on a theory exam section but also on a clinical skil...

  9. With the help of a foreign ally: biopharmaceutical innovation in India after TRIPS.

    Angeli, Federica

    2014-05-01

    This article investigates the implications of the Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS), which reached full-fledged implementation in 2005, for the patenting activity of Indian biopharmaceutical companies. The Indian biopharmaceutical industry is well-known for its generic producers, whose business models capitalize on the opportunity to reverse-engineer patented compounds and produce them at low costs through process innovation. By strengthening intellectual property rights, TRIPS determined a major regulative change, which presents the characteristics of an institutional shock. The examination of the patenting and alliance activity of 123 Indian biopharmaceutical firms between 1999 and 2009 reveals two important insights. First, the innovation outcome of Indian biopharmaceuticals has sharply increased during the transition to TRIPS-compliant regulation, suggesting that Indian companies have been capable and willing to transit from an imitation-based to an innovation-based business model. Second, those biopharmaceutical firms holding cross-border alliances to foreign partners have proved significantly more successful at enhancing their innovative capability. This research delivers a multifold contribution to the policy debate surrounding the enforcement of TRIPS in emerging economies. First, it suggests that such regulatory change may have encouraged biopharmaceutical innovation in India, despite the sceptical voices who did not foresee any benefits because of inherent inertia of the industry. Second, by arguing and testing the advantages of foreign partnerships, this research highlights that the much feared return of pharmaceutical foreign companies to India could instead favour adaptation to institutional change. Implications for Indian public health are particularly critical. The impact of TRIPS on drug pricing and on the capability--and willingness--of Indian biopharmaceuticals to invest in local health conditions are two crucial points of discussion. PMID:23558959

  10. Turning time from enemy into an ally using the Pomodoro technique

    Wang, Xiaofeng; Gobbo, Federico; Lane, Michael

    2010-01-01

    Time is one of the most important factors dominating agile software development processes in distributed settings. Effective time management helps agile teams to plan and monitor the work to be performed, and create and maintain a fast yet sustainable pace. The Pomodoro Technique is one promising time management technique. Its application and adaptation in Sourcesense Milan Team surfaced various benefits, challenges and implications for distributed agile software development. Lessons learnt f...

  11. Evolution of microstructure during fabrication of Zr-2.5 wt pct Nb ally pressure tubes

    Microstructural changes occurring during the fabrication of Zr-2.5 pct Nb alloy pressure tubes by a modified route, involving hot extrusion followed by two pilgering operations with an intermediate annealing step, have been examined in detail. In the conventional fabrication route, the hot extrusion step is followed by a single cold drawing operation in which the cold work to the extent of 25 pct is imparted to the material for achieving the required mechanical properties. Tensile properties obtained at each stage of fabrication have been evaluated and compared between the two processes. The main aim of this work has been to produce a microstructure and texture which are know n to yield a lower irradiation growth. Additionally, suitable annealing conditions have been optimized for the intermediate annealing which annihilates the cold work introduced by the first cold pilgering operation without disturbing the two-phase elongated microstructure. This elongated α + βI microstructure is required for obtaining the desired level of strength at 310 C. The final microstructure and the crystallographic texture of the finished pressure tube have been compared with those reported for the conventionally processed material

  12. Phylogeny and phylogenetic classification of the antbirds, ovenbirds, woodcreepers, and allies (Aves: Passeriformes: Infraorder Furnariides)

    Moyle, R.G.; Chesser, R.T.; Brumfield, R.T.; Tello, J.G.; Marchese, D.J.; Cracraft, J.

    2009-01-01

    The infraorder Furnariides is a diverse group of suboscine passerine birds comprising a substantial component of the Neotropical avifauna. The included species encompass a broad array of morphologies and behaviours, making them appealing for evolutionary studies, but the size of the group (ca. 600 species) has limited well-sampled higher-level phylogenetic studies. Using DNA sequence data from the nuclear RAG-1 and RAG-2 exons, we undertook a phylogenetic analysis of the Furnariides sampling 124 (more than 88%) of the genera. Basal relationships among family-level taxa differed depending on phylogenetic method, but all topologies had little nodal support, mirroring the results from earlier studies in which discerning relationships at the base of the radiation was also difficult. In contrast, branch support for family-rank taxa and for many relationships within those clades was generally high. Our results support the Melanopareidae and Grallariidae as distinct from the Rhinocryptidae and Formicariidae, respectively. Within the Furnariides our data contradict some recent phylogenetic hypotheses and suggest that further study is needed to resolve these discrepancies. Of the few genera represented by multiple species, several were not monophyletic, indicating that additional systematic work remains within furnariine families and must include dense taxon sampling. We use this study as a basis for proposing a new phylogenetic classification for the group and in the process erect new family-group names for clades having high branch support across methods. ?? 2009 The Willi Hennig Society.

  13. Seed Protein Variations of Salicornia L. and Allied Taxa in Turkey

    A.E. Yaprak; YURDAKULOL, E

    2007-01-01

    Electrophoretic seed protein patterns of a number of accessions of Salicornia europaea L. sl., S. prostrata Palas, S. fragilis P.W. Ball and Tutin, Sarcocornia fruticosa (L.) A. J. Scott, Sarcocornia perennis (Miller.) A. J. Scott, Arthrocnemum glaucum (Del.) Ung.-Sternb., Microcnemum coralloides (Loscos and Pardo) subsp. anatolicum Wagenitz and Halocnemum strobilaceum (Pall.) Bieb. were electrophoretically analysed on SDS-PAGE. In total 48 different bands were identified. The obtained data h...

  14. The rise and fall of Sauropus (Phyllanthaceae): a molecular phylogenetic analysis of Sauropus and allies

    Pruesapan, Kanchana

    2010-01-01

    Molecular phylogenetic studies focused on the genus Phyllanthus L. (Phyllanthaceae) showed that Sauropus Blume (including Synostemon F.Muell.) and its related genera Breynia J.R.Forst. & G.Forst. and Glochidion J.R.Forst. & G.Forst. should be united with Phyllanthus to create a monophyletic genus. The relationships within Sauropus and its relationship with Breynia were studied to test/corroborate such a broad definition of Phyllanthus. The molecular phylogenetic analyses show that Sauropus in...

  15. NATO nuclear reductions and the assurance of Central and Eastern European Allies

    Guthe, Kurt

    2013-01-01

    Recent years have seen a debate within NATO over the issue of whether U.S. nonstrategic nuclear weapons in Europe should be retained in their current status, reduced in number, or withdrawn from the Continent. Some countries, including Germany, the Netherlands, and Belgium have advocated removal of the weapons. Others, notably member states in Central and Eastern Europe (CEE) are wary of changes in the nuclear posture of the alliance. The position of the United States and NATO as a whole i...

  16. Assessing the risk from the depleted uranium weapons used in Operation Allied Force

    Liolios, T E

    1999-01-01

    The conflict in Yugoslavia has been a source of great concern for the neighboring countries, about the radiological and toxic hazard posed by the alleged presence of depleted uranium in NATO weapons. In the present study a worst-case scenario is assumed mainly to assess the risk for Greece and other neighboring countries of Yugoslavia at similar distances . The risk of the weapons currently in use is proved to be negligible at distances greater than 100 Km. For shorter distances classified data of weapons composition are needed to obtain a reliable assessment.

  17. Assessing the risk from the depleted uranium weapons used in Operation Allied Force

    Liolios, Theodore E.

    1999-01-01

    The conflict in Yugoslavia has been a source of great concern due to the radiological and toxic hazard posed by the alleged presence of depleted uranium in NATO weapons. In the present study some worst-case scenaria are assumed in order to assess the risk for Yugoslavia and its neighboring countries . The risk is proved to be negligible for the neighboring countries while for Yugoslavia itself evidence is given that any increase in total long-term cancer mortality will be so low that it will ...

  18. Enhancing engineering practices for productivity and profits in agro-allied industries

    The word productivity is a part of everyday vocabulary of industrial engineers and managers. Terms such as optimum utilization of resources, operational efficiency, product competitiveness, maintenance culture, etc., are mentioned with regular frequency. This is healthy, because productivity improvement does not happen by wishing for it or trying harder but by deliberately planning for it. The rewards of higher productivity are immense. At the firm level, such benefit include high production rates, higher profits, better quality products and services, customer satisfaction, higher take home pay for employees and high employee morale. Many of these benefits can be derived through the application of simple potential productivity improvement tools that are hinged on engineering practices

  19. Allied industry approaches to alter intramuscular fat content and composition in beef animals

    Biochemical and biophysical research tools have been used to define the developmentaldynamics of numerous cell lineages from a variety of tissues relevant to meat quality. With respect to the adipose cell lineage, much of our present understanding of adipogenesis and lipid metabolism was initially d...

  20. Ultrasonic measurements and other allied parameters of yttrium soaps in mixed organic solvents

    The ultrasonic measurements of yttrium soaps were made in a mixture of 70 % benzene and 30 % dimethylsulfoxide (ν/ν) to determine the critical micelle concentration, soap-solvent interaction and various acoustic and thermodynamic parameters. The values of the CMC decrease with increasing chainlength of fatty acid constituent of the soap molecule and are in agreement with the values obtained from other micellar properties. The various acoustic parameters (intermolecular freelength, adiabatic compressibility, apparent molar compressibility, specific acoustic impedance, apparent molar volume, molar sound velocity, solvation number, available volume and relative association) for yttrium soaps (myristate, palmitate, stearate and oleate) have been evaluated by ultrasonic velocity measurements. (Authors)

  1. On the use of accelerators dosimetric ally equivalent to the technique RapidArc VMAT

    Scheduled maintenance and unexpected failures can cause a stop in the operation of accelerators for hours or days. Prolonging treatments cause discomfort, anxiety and decreased chance for cure. Using a second accelerator backup set of the same design and dosimetry, would mitigate the effects of such interruptions. The aim of this study is to determine the safety of using either two accelerators in Rapid Arc VMAT treatments. (Author)

  2. Work Values of Freshmen in Allied Health and Helping Professions: A Comparative Study.

    Avi-Itzhak, Tamara E.; Ben-Shem, Idit

    1993-01-01

    A survey of Israeli first-year college students enrolled in occupational therapy (55), special education (33), nursing (88), and physical therapy (44) found significant differences in the work values of those in therapy-oriented versus service-oriented fields. For occupational therapists, job-related aesthetics were most important, management…

  3. African-American culture and AIDS prevention. From barrier to ally.

    Bowser, B P

    1992-01-01

    African Americans make up an increasing proportion of persons with the acquired immunodeficiency syndrome (AIDS). I identify and describe cultural elements such as oral traditions, multiple naming, a collective identity, extended families, and sexuality influenced by myth and exaggeration that condition African Americans' reactions to AIDS prevention. I also offer suggestions on how these cultural elements can be used for effective AIDS prevention efforts in African-American communities.

  4. An Unexpected Ally: Using Microsoft's SharePoint to Create a Departmental Intranet

    Dahl, David

    2010-01-01

    In September 2008, the Albert S. Cook Library at Towson University implemented an intranet to support the various functions of the library's Reference Department. This intranet is called the RefPortal. After exploring open source options and other Web 2.0 tools, the department (under the guidance of the library technology coordinator) chose…

  5. Taraxacum nigricans, T. alpestre and allies in the Taraxacum sect. Alpestria: taxonomy, geography and conservation status

    Štěpánek, Jan; Kirschner, Jan; Jarolímová, Vlasta; Kirschnerová, Ludmila

    2011-01-01

    Roč. 83, č. 4 (2011), s. 537-564. ISSN 0032-7786 R&D Projects: GA ČR GA206/07/1555; GA MŠk LC06073 Institutional research plan: CEZ:AV0Z60050516 Keywords : agamosperly * geografical parthenogenesis * typification Subject RIV: EF - Botanics Impact factor: 2.521, year: 2011

  6. The Market Maven, a new ally in the diffusion of innovations process

    De Vita , Carmine Franco

    1997-01-01

    The initial motive for undertaking this research, was a desire to better understand those factors which were said to affect the diffusion of ethnic foods. In attempting to develop the general methodology for this study, the author revisited seminal studies on diffusion of innovations, word-of-mouth, opinion leadership, and innovator / early adopter influence. During this process, the author discovered Feick and Price's (1987), emergent "Market Maven", theory. Said to be distinc...

  7. Allies in Biofuels. Opportunities in the Dutch - Argentinean biofuels trade relation

    First generation biofuels as an environmental solution are showing their own negative environmental, social and economic side effects. These need to be dealt with, because it is apparent that those same biofuels can be produced in a sustainable manner, thereby contributing to a healthier planet. Since both Argentina and the Netherlands would benefit from sustainable biofuels trade, policy measures need to be taken to guide the proper way. In what manner could bilateral cooperation concerning biofuels, optimize trade and policy output in both countries? By answering this question, one can hand solutions to upcoming problems - barriers to a sustainable energy structure - while at the same time facilitating trade between Argentina and the Netherlands. Besides providing information about the European, Dutch and Argentine market, this report presents an overview of biofuel policies. Special attention is given to the issue of sustainable biofuel production, in order to spread the necessary awareness, create wide support for corresponding politics, and offer opportunities for cooperation to prevent future entrapment. An entrapment, which could easily occur when actors in politics and business ignore international requirements for sustainable biofuel production. The research aims to produce the following output: Policy recommendations regarding the promotion of environmentally sound biofuels in both countries; A set arena to support a policy dialogue between both countries; An overview of current Dutch and Argentinean biofuel policies; Up to date information on current volumes of production, consumption and trade; Data with contact information of partners in both countries. Argentina shows an extremely professional agricultural sector, producing large quantities of vegetable oils, specifically of soybean. This sector has started to turn its attention towards biofuels - particularly to biodiesel. Projected production (for 2007-2008) is astonishingly high. The sector mainly focuses on first generation biofuels and has only little experience with rapeseed, and second generation fuels. It is in both these areas that Dutch and European experience can play a role to develop Argentina's biofuels sector. Argentina, on the other hand can produce the amounts of biofuels that Europe and the Netherlands are demanding for in the short run. The outcome of research shows several recommendations to change biofuels policies for both countries. Furthermore, areas for cooperation were defined. In short: Dutch biofuels policy regarding international research and cooperation projects is too narrow. Argentina is an excellent partner but until now completely unnoticed. Teaming up with Brazil and making use of the same financial structures would be a possibility for the incorporation of Argentina in Dutch foreign biofuels activities; The Dutch initiative on criteria for sustainable production of biofuels appears overachieving, and hardly workable for producing countries. The dialogue with those countries - such as Argentina - should be intensified, in order to develop at least voluntary agreements, and to guarantee that both producer and consumer country are on the same team. The process is a two-way street; Argentina needs to stabilize policy development in order to bring stability to the biofuels sector and promote investments. Also, Argentina needs to develop a long-term strategy on biofuels and more actively pursue its national interests in the international arena specifically in terms of trade issues (WTO, normalization); Argentina's policy needs diversification. Brainstorming with experienced Dutch and European counterparts can distill instruments that are suitable for Argentina. Combined projects between Dutch and Argentinean institutes (SenterNovem, ECN, WUR, INTA) would be profitable in this area, as well as on more practical research regarding crop's life cycles, energy balances, technologies, etc. Modifications to policy and cooperation as described, can only improve the likelihood of successful policy outcome in both countries

  8. Tag team tectonics: mantle upwelling and lithospheric heterogeneity ally to rift continents (Invited)

    Nelson, W. R.; Furman, T.

    2013-12-01

    The configuration of continents we know today is the result of several billion years of active Wilson Cycle tectonics. The rifting of continents and subsequent development of ocean basins is an integral part of long-term planetary-scale recycling processes. The products of this process can be seen globally, and the East African Rift System (EARS) provides a unique view of extensional processes that actively divide a continent. Taken together with the adjoining Red Sea and Gulf of Aden, the EARS has experienced over 40 Ma of volcanism and ~30 Ma of extension. While early (pre-rift) volcanism in the region is attributed to mantle plume activity, much of the subsequent volcanism occurs synchronously with continental rifting. Numerous studies indicate that extension and magmatism are correlated: extension leads to decompression melting while magmatism accommodates further extension (e.g. Stein et al., 1997; Buck 2004; Corti 2012). Evaluation of the entire EARS reveals significant geochemical patterns - both spatial and temporal - in the volcanic products. Compositional variations are tied directly to the melt source(s), which changes over time. These variations can be characterized broadly by region: the Ethiopian plateau and Turkana Depression, the Kenya Rift, and the Western Rift. In the Ethiopian plateau, early flood basalt volcanism is dominated by mantle plume contributions with variable input from lherzolitic mantle lithosphere. Subsequent alkaline shield volcanism flanking the juvenile Main Ethiopian Rift records the same plume component as well as contributions from a hydrous peridotitic lithosphere. The hydrous lithosphere does not contribute indefinitely. Instead, young (role in the initiation and subsequent evolution of the rifting throughout eastern Africa.

  9. Comparing COI and ITS as DNA barcode markers for mushrooms and allies (Agaricomycotina.

    Bryn T M Dentinger

    Full Text Available DNA barcoding is an approach to rapidly identify species using short, standard genetic markers. The mitochondrial cytochrome oxidase I gene (COI has been proposed as the universal barcode locus, but its utility for barcoding in mushrooms (ca. 20,000 species has not been established. We succeeded in generating 167 partial COI sequences (~450 bp representing ~100 morphospecies from ~650 collections of Agaricomycotina using several sets of new primers. Large introns (~1500 bp at variable locations were detected in ~5% of the sequences we obtained. We suspect that widespread presence of large introns is responsible for our low PCR success (~30% with this locus. We also sequenced the nuclear internal transcribed spacer rDNA regions (ITS to compare with COI. Among the small proportion of taxa for which COI could be sequenced, COI and ITS perform similarly as a barcode. However, in a densely sampled set of closely related taxa, COI was less divergent than ITS and failed to distinguish all terminal clades. Given our results and the wealth of ITS data already available in public databases, we recommend that COI be abandoned in favor of ITS as the primary DNA barcode locus in mushrooms.

  10. Structure and Mechanical Properties of Al-Li Alloys as Cast

    J. Augustyn-Pieniążek

    2013-04-01

    Full Text Available The high mechanical properties of the Al-Li-X alloys contribute to their increasingly broad application in aeronautics, as an alternative for the aluminium alloys, which have been used so far. The aluminium-lithium alloys have a lower specific gravity, a higher nucleation and crack spread resistance, a higher Young’s module and they characterize in a high crack resistance at lower temperatures. The aim of the research planned in this work was to design an aluminium alloy with a content of lithium and other alloy elements. The research included the creation of a laboratorial melt, the microstructure analysis with the use of light microscopy, the application of X-ray methods to identify the phases existing in the alloy, and the microhardness test.

  11. The Impact of Culture, Self-Determination, and Allies on Women's Educational Opportunities in Botswana.

    Austin, Nancy; Mazile, Bontshetse

    Higher education opportunities for women in Botswana were studied through a feminist theoretical framework and a participant conversation methodology. Nine female students, participants in a postgraduate diploma program for secondary teacher certification or a masters program in education, ranged in age from 23 to 49. All but one were first…

  12. Historical Biogeography of the Southeast Asian genus Spatholobus (Legum.-Papilionoideae) and its allies

    Ridder-Numan, Jeannette W.A.

    1996-01-01

    The genera Butea, Meizotropis and Spatholobus (Leguminosae—Papilionoideae), occurring in continental Southeast Asia and the West Malesian Archipelago, are treated phylogenetically with Kunstleria as an outgroup. The genera Spatholobus (29 species), Butea and Meizotropis (each 2 species) are usually placed in the tribe Phaseoleae of the Papilionoideae, whereas Kunstleria belongs to the less advanced tribe Millettieae. Spatholobus is probably basal in the Phaseoleae. An analysis with PAUP of th...

  13. The Soviet state in the Great Patriotic War in assessments of the Allies and the Enemy

    Kozlov Nikolai Dmitrievicn

    2015-01-01

    В статье исследуются размышления, мнения и оценки политических и военных деятелей, представителей общественности стран антигитлеровской коалиции и фашистской Германии о советском государстве и его роли, которые они высказывали в годы войны.

  14. Superior coexistence: systematicALLY regulatING land subsidence BASED on set pair theory

    Chen, Y.; Gong, S.-L.

    2015-11-01

    Anthropogenic land subsidence is an environmental side effect of exploring and using natural resources in the process of economic development. The key points of the system for controlling land subsidence include cooperation and superior coexistence while the economy develops, exploring and using natural resources, and geological environmental safety. Using the theory and method of set pair analysis (SPA), this article anatomises the factors, effects, and transformation of land subsidence. Based on the principle of superior coexistence, this paper promotes a technical approach to the system for controlling land subsidence, in order to improve the prevention and control of geological hazards.

  15. Securing a Wireless Site Network to Create a BIM-allied Work-front

    Payam R. Zekavat

    2014-08-01

    the electronic signals behaviour in an ever-changing construction site. Measurements of the signal strengths during excavation and concrete work are presented and compared with theoretical calculations used to predict wave propagation. The results show how present models overestimate signal attenuation patterns on the construction site. This is important for designing a reliable and secure wireless site networks to link BIM to the work-front.

  16. Allies or foes? Key challenges facing the shifting landscape of destination management in England

    Hristov, Dean; Naumov, Nikola

    2015-01-01

    Within a shifting political and economic context, reshaped Destination Management Organisations (DMOs) in England are expected to deliver well beyond traditional activities related to marketing and promotion of destinations. Yet, such delivery processes are to happen in light of the increasingly resource-constrained operational environment, where the public purse is no longer available to destinations and destination organisations. This commentary paper provides a discussion on recent transit...

  17. Unthinkable Allies?: John Dewey, Irving Babbitt and "The Menace of the Specialized Narrowness"

    Smilie, Kipton D.

    2016-01-01

    This article examines Irving Babbitt's probing critiques of John Dewey's ideas at the beginning of the 20th century. Babbitt (1865-1933) was the co-founder of the New Humanists, a collection of scholars and academics who advocated for a return of the Greek and Roman classics in the American curriculum. Babbitt believed that both naturalism and…

  18. Kirjandus ei püüa maailma mõjutada / Alli Lunter

    Lunter, Alli

    2004-01-01

    Postmodernistlik kirjandus ja ühiskonnaprobleemid A. Lunteri õpikus "Maailmakirjanduse õpik: Modernismist postmodernismini" (Viljandi : Sarapuu, 2003). Vastuseks Herbert Vainu retsensioonile, vt. Õpetajate Leht, 2004, 27. veebr., lk. 6

  19. Unstable deformation in normal and superconducting states: Al-Li solid solution

    The low temperature unstable deformation (LTUD) of the Al-3.8 at.% Li solid solution is studied at temperature 0.52 K in normal (N) and superconducting (S) states. The value of softening effect at NS-transition is used to eliminate the local heating of the sample. The local heating is found to be insufficient to change the sign of temperature sensitivity of flow stress and these to explain the NS-transition effect on LTUD within the framework of heat conception. the statistical analysis of the stress jumps shows that the frequency distribution of the jump amplitudes in the N-states is described by the power law with the exponent α=1.3±0.2. The power law is considered as a factor of the self-organized criticality in the dislocation dynamics and the LTUD as a manifestation of avalanche-like motion of dislocation pile-ups

  20. Cypsela morphology of lactuca L. and its allied genera (cichoreae-asteraceae) from pakistan and kashmir

    The systematic significance of the cypsela morphology of more 30 taxa (25 species, 1 subspecies and 4 varieties) belonging to 3 genera viz. Lactuca L. Cicerbita Wallr. and Prenanthes L. from Pakistan and Kashmir has been studied by using Light Microscope (LM) and Scanning Electron Microscope (SEM) and discussed. The morphological characters of cypsela such as size, number of ribs, number of cypsela per capitula, presence or absence of beak, number of series of pappus, color and size of pappus and carpopodium were quite useful for the delimitation of different taxa both at the generic and species level. (author)

  1. National planning guidelines for environment ally sustainable development in Scotland and lessons learnt for Pakistan

    This piece of research work reflects the researcher's academic as well as the practical experiences of Scottish planning about the concept, issues and policy formulations. It is in the context of National Planning Policy Guidelines, originated in Scotland with particular reference to it's Fife Region. The first part reflects the general overview of Scotland followed by brief description of the region. Another part deals with the existing strategic issues in the region which are related to land and the environment notably rural planning priorities, agricultural scarce land, conservation of recreational and tourist areas, forest land potentials, landscape resources, national scenic areas, petro-chemical, industrial zones, river pollution and future land use for housing. This study has suggested National Planning Policy Guidelines to these issues. Last section deals with the lessons learnt from Scotland and appropriate application of these guidelines in case of Pakistan. The establishment of the relevant National Planning Guidelines according to our local environmental and socio-economic conditions can also play a significant role to safe guard our rural and urban landscapes and their respective environments. These broad guidelines must therefore be recommended in the broader spectrum in spatial linkage. Moreover these guidelines must therefore synthesize and articulated specifically at structure plans, master plans at district, sub district or local plans and planning processes which can lead Pakistan towards environmentally sustainable development. (author)

  2. Mabel Carney at Teachers College: From Home Missionary to White Ally

    Weiler, Kathleen

    2005-01-01

    This article discusses the career of Mabel Carney, head of the Department of Rural Education at Teachers College from 1918 to 1941. Carney was deeply involved with African American and African education, traveling to Africa and the American South, teaching courses on "Negro education", and working closely with both African and African American…

  3. What about Health Educators? Nutrition Education for Allied Health Professionals: A Review of the Literature

    Ettienne-Gittens, Reynolette; Lisako, E.; McKyer, J.; Goodson, Patricia; Guidry, Jeffrey; Outley, Corliss

    2012-01-01

    Background: Health educators are critical members of the health care team who may be called upon to provide nutrition education. However, are health educators prepared for this task? What have scholars concluded regarding this pertinent topic? Purpose: This study has three purposes: (1) to determine the definition of and criteria for nutrition…

  4. Energy conservation research in the paper and allied products industry. Phase 1

    Clark, J.L.; Holcombe, W.D.; Hartley, E.M.; Carr, W.W.

    1979-10-01

    The Engineering Experiment Station of the Georgia Institute of Technology has conducted a study of certain concepts for energy conservation in the paper manufacturing industry. The primary emphasis of the study was evaluation of a textile industry device called a Machnozzle as an aid to dewatering of the press section felts. Experimental results indicate that significant reduction in felt moisture may be obtained by installing and operating the Machnozzle just prior to the suction box. Analysis of the economic and energy impact is hampered by lack of a clear understanding of the relationship between felt moisture and paper sheet moisture. Further study in this area is recommended. Also addressed in this project is the concept of maintaining higher feedstock temperatures, particularly through retention of thermal energy from the pulping process. Various problems relating to high temperature processing are discussed.

  5. Thermal mechanic processing effects on the microstructural evolution of Al-Li alloys

    The investigation of the effects of different thermomechanical treatments on the microstructure of alloys 8090 and 8091 (Al-Li-Cu-MgZr) is the aim of the present work. In this context, the intervention of static recrystallization during solution treatment after hot working is the determining factor on the final microstructure of products in form of plates. The results could reveal that the rolling temperature is a very important variable if microstructural control is to be achieved in these alloys. (author)

  6. 42 CFR 413.87 - Payments for Medicare+Choice nursing and allied health education programs.

    2010-10-01

    ... FOR END-STAGE RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED... amount. (f) Calculation of the payment “pool.” (1) Subject to paragraph (f)(3) of this section,...

  7. The influence of heat treatment on the properties of laser welded Al-Li alloy

    An Al-Li-Cu-Mg-Zr alloy was welded with CO2 laser to produce full-penetration, single pass butt welds. Initial YS of 487 MPa for unwelded material decreased to 268 MPa after laser welding as well as the measured elongation decreased from 17.48% to 3.7% respectively. The postweld heat treatment consisting of solutionizing at 550 oC for 2 h and/or artificial aging at 150, 175, 200 and 225oC for 2, 4, 8, 16 and 32 h were performed to improve the properties of welded material. Studies by optical, scanning and transmission electron microscopes were provided in: as-welded, as-heat-treated and as-deformed states to show the microstructural changes with postweld heat treatment. (author)

  8. Anger among Allies: Audre Lorde's 1981 Keynote Admonishing the National Women's Studies Association

    Olson, Lester C.

    2011-01-01

    This essay argues that Audre Lorde's 1981 keynote speech, "The Uses of Anger: Women Responding to Racism," has much to contribute to communication scholars' understanding of human biases and rhetorical artistry. The significance of Lorde's subject is one reason for devoting critical attention to her speech, because, in contemporary public life in…

  9. Study of galactomannose interaction with solids using AFM, IR and allied techniques.

    Wang, Jing; Somasundaran, Ponisseril

    2007-05-15

    Guar gum (GG) and locust bean gum (LBG) are two galactomannose polysaccharides with different mannose/galactose ratio which is widely used in many industrial sectors including food, textiles, paper, adhesive, paint, pharmaceuticals, cosmetics and mineral processing. They are natural nonionic polymers that are non-toxic and biodegradable. These properties make them ideal for industrial applications. However, a general lack of understanding of the interactions between the polysaccharides and solid surfaces has hindered wider application of these polymers. In this work, adsorption of locust bean gum and guar gum at the solid-liquid interface was investigated using adsorption tests, electrophoretic mobility measurements, FTIR, fluorescence spectroscopy, AFM and molecular modeling. Electrokinetic studies showed that the adsorption of GG and LBG on talc do not change its isoelectric point. In addition, GG and LBG adsorption on talc was found not to be affected by changes in solution conditions such as pH and ionic strength, which suggests a minor role of electrostatic force in adsorption. On the other hand, fluorescence spectroscopy studies conducted to investigate the role of hydrophobic bonding using pyrene probe showed no evidence of the formation of hydrophobic domains at talc-aqueous interface. Moreover, urea, a hydrogen bond breaker, markedly reduced the adsorption of LBG and GG on talc, supporting hydrogen bonding as an important role. In FTIR study, the changes in the infrared bands, associated with the CO stretch coupled to the CC stretch and OH deformation, were significant and therefore also supporting hydrogen bonding of GG and LBG to the solid surface. In addition, Langmuir modeling of adsorption isotherm further suggested that hydrogen bonding is the dominant force for polysaccharide adsorption since the adsorption free energy of these polymers is close to that for hydrogen bond formation. From molecular modeling, different helical structures are observed for LBG and GG because of their different galactose/mannose ratio and these polymers were found to adsorb flat on solid to let more of its OH groups in contact with the surface. All of the above results suggest that the main driving force for adsorption both of GG and LBG on talc is hydrogen bonding rather than hydrophobic force even though there is difference in G/M ratio between them. PMID:17316669

  10. Tin (Sn) - An Unlikely Ally to Extend Moore's Law for Silicon CMOS?

    Hussain, Aftab M.

    2012-12-01

    There has been an exponential increase in the performance of silicon based semiconductor devices in the past few decades. This improvement has mainly been due to dimensional scaling of the MOSFET. However, physical constraints limit the continued growth in device performance. To overcome this problem, novel channel materials are being developed to enhance carrier mobility and hence increase device performance. This work explores a novel semiconducting alloy - Silicon-tin (SiSn) as a channel material for CMOS applications. For the first time ever, MOS devices using SiSn as channel material have been demonstrated. A low cost, scalable and manufacturable process for obtaining SiSn by diffusion of Sn into silicon has also been explored. The channel material thus obtained is electrically characterized by fabricating MOSCAPs and Mesa-shaped MOSFETs. The SiSn devices have been compared to similar devices fabricated using silicon as channel material.

  11. Transmedia Storytelling, an ally of Corporate Communication: #Dropped by Heineken case study

    Costa-Sánchez, C. (Carmen)

    2014-01-01

    Corporate Communication changes trying to follow new social, technological and media dynamics. In the current context, it begins to experience with transmedia storytelling that offers a story to explain, multiple platforms and distinct levels of audience participation. Up to now, transmedia storytelling has been studied especially linked to fiction brands (television, cinematographic or literary, fundamentally). This article is one of the first in tackling a corporate campaign from the key el...

  12. Sleep and mood disorders in dry eye disease and allied irritating ocular diseases.

    Ayaki, Masahiko; Kawashima, Motoko; Negishi, Kazuno; Kishimoto, Taishiro; Mimura, Masaru; Tsubota, Kazuo

    2016-01-01

    The aim of the present study was to evaluate sleep and mood disorders in patients with irritating ocular diseases. The study design was a cross-sectional/case-control study conducted in six eye clinics. Out of 715 outpatients diagnosed with irritating ocular surface diseases and initially enrolled, 301 patients with dry eye disease (DED) and 202 age-matched control participants with other ocular surface diseases were analyzed. The mean Pittsburgh Sleep Quality Index (PSQI) and Hospital Anxiety and Depression Scale (HADS) scores were 6.4 ± 3.2 and 11.1 ± 5.7 for severe DED (n = 146), 5.5 ± 3.3 and 9.8 ± 4.0 for mild DED (n = 155), 5.5 ± 3.1 and 9.5 ± 6.6 for chronic conjunctivitis (n = 124), and 5.0 ± 3.3 and 8.9 ± 5.3 for allergic conjunctivitis (n = 78). There were significant differences among these diagnostic groups for PSQI (P < 0.05). Regression analysis of patients with DED revealed the PSQI and HADS scores were significantly correlated with the severity of DED (P < 0.05). Our results demonstrate that sleep quality in patients with DED is significantly worse than in patients with other irritating ocular surface diseases and it is correlated with the severity of DED. PMID:26927330

  13. Sleep and mood disorders in dry eye disease and allied irritating ocular diseases

    Masahiko Ayaki; Motoko Kawashima; Kazuno Negishi; Taishiro Kishimoto; Masaru Mimura; Kazuo Tsubota

    2016-01-01

    The aim of the present study was to evaluate sleep and mood disorders in patients with irritating ocular diseases. The study design was a cross-sectional/case-control study conducted in six eye clinics. Out of 715 outpatients diagnosed with irritating ocular surface diseases and initially enrolled, 301 patients with dry eye disease (DED) and 202 age-matched control participants with other ocular surface diseases were analyzed. The mean Pittsburgh Sleep Quality Index (PSQI) and Hospital Anxiet...

  14. PORTUGAL AND SOUTH AFRICA: CLOSE ALLIES OR UNWILLING PARTNERS IN SOUTHERN AFRICA DURING THE COLD WAR?

    Paulo Correia

    2011-08-01

    Full Text Available The popular perception of the existence of a straightforward alliance betweenPortugal and South Africa as a result of the growing efficacy of African nationalistgroups during the 1960s and early 1970s has never been seriously questioned.However, new research into recently declassified documents from the Portuguesemilitary archives and an extensive overview of the Portuguese and South Africandiplomatic records from that period provide a different perception of what wascertainly a complex interaction between the two countries. It should be noted that,although the two countries viewed their close interaction as mutually beneficial, theexisting political differences effectively prevented the creation of an open strategicalliance that would have had a greater deterrence value instead of the secretivetactical approach that was used by both sides to resolve immediate security threats.In addition, South African support for Portugal’s long, difficult and costlycounterinsurgency effort in three different operational theatres in Africa – Angola,Mozambique and Guinea Bissau – was not really decisive since such support wasnever provided on a significant scale.

  15. Oxytocin-Motivated Ally Selection is Moderated by Fetal Testosterone Exposure and Empathic Concern

    Mariska Esther Kret

    2013-01-01

    Full Text Available In humans, the hypothalamic neuropeptide oxytocin shifts the individual’s focus on self-interest towards group-serving cognitions and decision making. Here we examine this general tendency in the context of group formation, where individuals included into their group (or not 18 targets morphed as having low or high-threat potential (with high-threat targets being beneficial to group-interests but potentially hurting the recruiter’s self-interest. Ninety healthy males self-administered oxytocin or placebo in a randomized double-blind, placebo-controlled study design, had their hands scanned to derive fetal testosterone vs. estradiol exposure from their 2D:4D ratio, and self-reported on their chronic empathic concern. Multilevel regression models revealed that when given oxytocin rather than placebo, individuals with low fetal testosterone priming included low-threat targets more and high-threat targets (somewhat less. Individuals with high fetal testosterone (i.e., low estradiol exposure, however, included high-threat targets more, and low-threat targets less when given oxytocin rather than placebo. Second, when given oxytocin rather than placebo, individuals with low empathic concern included low-threat targets more and high-threat targets less. Individuals with high empathic concern, however, included high-threat targets more, and low-threat targets less when given oxytocin rather than placebo. We conclude that oxytocin shifts the individual’s focus from self to group-serving cognition and decision making, and that these tendencies are stronger for males with high rather than low fetal testosterone exposure, and high rather than low empathic concern. Implications and avenues for future research are discussed.

  16. Numerical simulation of a Charpy test and correlation of fracture toughness with fracture energy. Vessel steel and duplex stainless steel of the primary loop; Simulation numerique d`un essai de resilience et correlation entre resilience et proprites de tenacite. Acier de cuve et acier austenoferritique du circuit primaire

    Breban, P; Eripret, C. [Departement MTC, Service RNE, Direction des Etudes et Recherches, Electricite de France (EDF), 92 - Clamart (France)

    1995-12-31

    The analysis methods used to evaluate the harmlessness of defects in the components of the primary coolant circuit of pressurized water reactor are based on the knowledge of the failure properties of concerned materials. The toughness is used to be measured through tests performed on normalized samples. But in some cases, especially for the vessel steel submitted to irradiation effects or for cast components in duplex stainless steel sensitive to thermal ageing, these measurements are not available on the material aged in operation. Therefore, fracture resistance has been evaluated through Charpy tests. Toughness is thus obtained on the basis of an empirical correlation. To improve these predictions, a modeling of the Charpy test in the framework of the local approach to fracture has been performed, for both materials. For the vessel steel, a complete evaluation of toughness has been achieved on the basis of a bidimensional viscoplastic modeling under large strain assumptions and a post-treatment with a Weibull model (cleavage fracture). The main hypothesis (partition between plain stress and plain strain areas in the bidimensional modeling) was corrected after a three dimensional calculations with the finite element program Code-Aster. The fracture analysis put into evidence that damage considerations like cavity nucleation and growth have to be introduced in the model in order to improve the description of physical phenomena. Two ways of progress have been suggested and are in course of being investigated, one in the framework of local approach to failure, the other with the help of micro-macro relationship. With regard to the duplex steel, the description of a Charpy (U) test allowed to clearly discriminate between crack initiation and propagation phases. A modeling through an equivalent homogenous material with a damage law based on a modified Gurson potential enables to describe quantitatively both phases of fracture. It clearly appears that a reliable evaluation of initiation dispersion and propagation speed requires to take into account the influence of microstructure in a more precise way. (author) 12 refs.

  17. Study and monitoring by acoustic emission coupled with electrochemical techniques of steel and rubber steel corrosion in acid medium; Etude et suivi par emission accoustique associe a des techniques electrochimiques de la corrosion d'acier et d'acier revetu d'elastomeres en milieu acide

    Idrissi, H. [Institut National des Sciences Appliquees, INSA, 69 - Villeurbanne (France); Boulif, R.; Maghnouj, J. [CERPHOS, Groupe Office Cherifienne des Phosphates, OCP, Casablanca (Morocco)

    2001-07-01

    During the past ten years the application of the acoustic emission technique in the field of corrosion allowed a detection and a characterization on factory site of the stress corrosion and corrosion-abrasion phenomena. In this spirit, its use can be extended to the monitoring of general corrosion and of corrosion under deposit. This work constitutes the base of a study aiming to a better understanding and a better controlling of corrosion phenomenon of steels covered or not, with a later objective: the development of a simple follow-up technique on industrial site. Within this framework, our objective is not only to study by electrochemical and acoustics techniques the general corrosion of various ordinary steels naked or covered with an elastomer coating, but also to develop a procedure, based on the acoustic emission, allowing the early detection of these steels corrosion when the protective coatings used are damaged. So, series of electrochemical tests coupled with the acoustic emission, such as the layouts of the volt-amperometric curves and measurements of the resistance of polarization, were carried out on two steels XC48 and A60 at ambient temperature and in concentrated phosphoric acid with 30% of P2O5 with the presence of impurities of Cl -, F -, SO42 -. For the covered samples we insisted more particularly on the presence or not of defects in the elastomer coating used. The obtained results made it possible, first to show the principal emissive sources during corrosion, secondly to specify the characteristics of the acoustic signals and finally to correlate these signals with traditional electrochemical measurements and the micrographic observations after tests. The characterization of the acoustic and electrochemical parameters enabled us to specify the sensitivity of the EA to this corrosion phenomenon of steels naked or covered with an elastomer coating. (authors)

  18. Recherche de paramètres morphologiques influents pour la prévision des caractéristiques mécaniques d'un acier austénoferritique

    Messiaen, Laure

    1997-01-01

    Duplex stainless steels are commonly used ( among others in nuclear industry) for their good properties. However these steels may "age" in service condition at high temperatures. As their mechanical properties ( charpy impact toughness, resistance to ductile tearing) are often very scattered and tend to decrease after ageing, it has become essential to predict them with high precision. For this, we propose to explain a part of the scattering of the mechanical properties with measurable parame...

  19. Mechanical characteristics of aluminium / aluminium and aluminium / steel joints used for lightening of automobile bodies; Caracteristiques mecaniques d'assemblages aluminium / aluminium et aluminium / acier utilises pour l'allegement des carrosseries automobiles

    Kosuge, Haraga [Mitsubishi Electric Corp., Centre de R and D des Technologies Avancees, Dept. des Materiaux et des Eco-Materiaux (Japan)

    2001-06-01

    All the possible solutions used for the steel-aluminium composite bonds are not equal. The riveting, linked or not to the bonding, give the best results. The clinching requires an increase of thicknesses for a mechanical resistance equal to those of homogeneous joints. (O.M.)

  20. Source(s) of acoustic activity during pitting development on AISI 316L austenitic stainless steel; Source(s) de bruit acoustique dans le developpement de piqures sur acier inoxydable austenitique 316l

    Fregonese, M.; Idrissi, H.; Mazille, H. [Institut National des Sciences Appliquees, INSA, 69 - Villeurbanne (France); Renaud, L.; Cetre, Y. [Rhoditech, Materiaux-Corrosion, 69 - Decines-Charpieu (France)

    2001-07-01

    The acoustic emission (AE) technique, based on the rapid release of energy within a material generating a transient elastic wave propagation, is widely used as a non-destructive technique (NDT) for testing vessels on-site. Many microscopic deformation or fracture processes have also been studied with this technique in laboratory experiments, but most of them concerned stress corrosion cracking investigations. Some published papers also deal with abrasion or erosion corrosion studies, and only a few attempts have been made to study purely electrochemical corrosion types such as uniform corrosion or pitting corrosion. In the latter case, the studies mainly concern aluminium and austenitic stainless steels in the presence of chloride ions. In both cases, AE activity (number of events) has been correlated to the corrosion rate, which was estimated in terms of weight-loss, applied current density or hydrogen evolution rate. A direct quantitative correlation was even established between the number of AE events and the number of pits or the pitted area. Most of the time, the generation of acoustic signals has been attributed to the evolution of hydrogen bubbles. Yet, as no direct correlation was made between the formation and the release of bubbles and the generation of AE bursts, some other physico-chemical mechanisms were proposed, such as stress changes on metal surface, or the rupture of an oxide or salt cap covering the pits. Moreover, a thorough investigation has been performed by Arora in various well-controlled experimental conditions on aluminium alloys. As mentioned by the author, if AE has to be used for detecting and identifying an active corrosion process such as pitting, it is absolutely necessary to proceed to careful acoustic parameters analyses of recorded AE signals. In that sense, the authors recently reported that two kinds of AE signals were recorded during pitting corrosion investigations, which could be discriminated by their rise time and counts number, whether pits are initiated by potential or current application on specimens machined out from a bar or from a rolled sheet. Further more, a correlation between emissivity and sensitivity of the material towards pitting, evaluated in terms of time delay and acoustic rate, was established. Yet, the size of the pits does not seem to be discriminative for emissivity: resonant signals are only recorded during the development of the pits as occluded cells. In that context, if different mechanisms have been proposed to be responsible for the emission of acoustic signals during pitting corrosion, no comparative study of individual physico-chemical phenomena occurring at the bottom of the pit has been carried out. This is the aim of this work. (authors)

  1. Modelling of microstructural creep damage in welded joints of 316L stainless steel; Modelisation de l'endommagement a haute temperature dans le metal d'apport des joints soudes d'acier inoxydable austenitique

    Bouche, G

    2000-07-01

    Welded joints of 316L stainless steel under service conditions at elevated temperature are known to be preferential sites of creep damage, as compared to the base material. This damage results in the formation of cavities and the development of creep cracks which can lead to a premature failure of welded components. The complex two-phase microstructure of 316L welds was simulated by manually filling a mould with longitudinal deposited weld beads. The moulded material was then aged during 2000 hours at 600 deg. C. High resolution Scanning Electron Microscopy was largely used to examine the microstructure of the simulated material before and after ageing. Smooth and notched creep specimens were cut from the mould and tested at 600 deg. C under various stress levels. A comparison of the lifetime versus nominal stress curves for the base and welded materials shows a greater dependence of the welded material to creep phenomena. Observation and EBSD analysis show that damage is preferentially located along the austenite grain boundaries. The stress and strain fields in the notched specimens were calculated by finite element method. A correlation of this field to the observed damage was made in order to propose a predictive law relating the creep damage to the mechanical conditions applied locally. Further mechanical tests and simulation on CT specimens and mode II tubular specimens allowed validating the model under various multiaxial loading conditions. (author)

  2. Cyclic plasticity of an austenitic-ferritic stainless steel under biaxial non proportional loading; Plasticite cyclique d'un acier inoxydable austeno-ferritique sous chargement biaxial non-proportionnel

    Aubin, V

    2001-11-15

    Austenitic-ferritic stainless steels are supplied since about 30 years only, so they are yet not well-known. Their behaviour in cyclic plasticity was studied under uniaxial loading but not under multiaxial loading, whereas only a thorough knowledge of the phenomena influencing the mechanical behaviour of a material enables to simulate and predict accurately its behaviour in a structure. This work aims to study and model the behaviour of a duplex stainless steel under cyclic biaxial loading. A three step method was adopted. A set of tension-torsion tests on tubular specimen was first defined. We studied the equivalence between loading directions, and then the influence of loading path and loading history on the stress response of the material. Results showed that duplex stainless steel shows an extra-hardening under non proportional loading and that its behaviour depends on previous loading. Then, in order to analyse the results obtained during this first experimental stage, the yield surface was measured at different times during cyclic loading of the same kind. A very small plastic strain offset (2*10{sup -5}) was used in order not to disturb the yield surface measured. The alteration of isotropic and kinematic hardening variables were deduced from these measures. Finally, three phenomenological constitutive laws were identified with the experimental set. We focused our interest on the simulation of stabilized stress levels and on the simulation of the cyclic hardening/softening behaviour. The comparison between experimental and numerical results enabled the testing of the relevance of these models. (authors)

  3. Analyse tribo-énergétique du procédé de toilage des portées cylindriques en acier traité et en fonte à graphite sphéroïdal

    Sura, Edoardo

    2007-01-01

    Known in its principle in the early 1930s, the belt grinding process especially came out industrially at the American car manufacturer's Chrysler. He was the first to develop an abrasive belt set-up allowing a mechanised operation for a process of manufacturing merely used for off-hand grinding. The superfinishing by coated belts won then a broad audience under the impulsion of the works of German Karl Weick in 1950. The objective of this PhD thesis was to specify the action of belt grinding ...

  4. Etude de la compétition déchirure ductile / rupture fragile : Application à la tenue mécanique des tubes en acier C-Mn et de leurs joints soudés.

    Le Corre, Vincent

    2006-01-01

    This study deals with the fracture behaviour of welded thin structures in the ductile to brittle transition range. It aims to propose a criterion to define the conditions for which the risk of fracture per cleavage does not exist on a cracked structure.The literature review shows that the difficulties of prediction of the fracture behaviour of a structure are related to the dependence of the fracture probability to the mechanical fields at the crack tip. The ductile to brittle transition rang...

  5. Microbial influenced corrosion of stainless steels in natural waters: interest of an enzymatic approach; Interet d'une approche enzymatique en corrosion microbienne des aciers inoxydables en eaux naturelles

    Landoulsi, J.; Richard, C. [Universite de Technologie de Compiegne, Lab. Roberval, FRE CNRS 2833, 60 (France); Pulvin, S. [Universite de Technologie de Compiegne, Lab. de Genie Enzymatique et Cellulaire, UMR CNRS 6022, 60 (France); Feron, D. [CEA Saclay, Dir. de l' Energie Nucleaire (DEN), Service de la Corrosion et du Comportement des Materiaux dans leurs Environnement, 91 - Gif sur Yvette (France)

    2005-07-01

    The electrochemical behavior of stainless steels in natural waters has been characterized with the ennoblement of their free corrosion potential (Ecorr). This phenomenon is heavily related to the bio-film settlement on their surfaces. Many hypotheses have been suggested to make clear the bio-film action. These hypotheses can be classified in two categories: mechanisms due to the passive film change and mechanisms related to the bio-film species. In these hypotheses, the enzymatic catalysis can play an important role by shifting the cathodic process. The catalytic effect of the bio-film has been reported by numerous researchers; however the enzyme use in experiments remains rare. This can be explained by two principal reasons: 1- Corrosion tests with the use of enzymes may cause some experimental problems. These proteins are sensible and can be denatured in the corresponding conditions. 2- Scientists, in microbial influenced corrosion, did not characterize enzymes which may play a role in corrosion; however some bacteria related to corrosion had been already identified. The 'corrosion enzymes' notions are unaware. Thus, the enzymatic approach still little reported in the literature. The aim of this paper is to show the interest of such approach to describe mechanisms implicated in the electrochemical behavior of stainless steels in natural waters. (authors)

  6. Caractérisation métallurgique et modélisation de la tenue en fluage à 550°C des liaisons soudées en acier Grade 92

    Kalck, Charlotte

    2012-01-01

    In the framework of the development of Generation IV nuclear power plants, ASME Grade 92 ferritic-martensitic steel is a candidate material for components subjected to long-term creep at high temperature. The aim of this study is to characterize the microstructure of Grade 92 butt welded joints and to model their creep behavior at 550 °C. Two filler rods were used for this study.The microstructure of the different weld regions was quantitatively characterized. In order to understand the weake...

  7. Fluage à 500°C d'un joint soudé d'un acier 9Cr-1Mo modifié. Evolution de la microstructure et comportement mécanique

    Vivier, Florian

    2009-01-01

    With the increase in worldwide energy demand, the nuclear industry is a way of producing electricity on a large scale and to answer to this need. For the design of a new generation of fission nuclear reactors and among six chosen fission reactor systems, France develops in particularly the Very High Temperature Reactor (VHTR) concept. This implies the use of materials that are more and more resistant to high temperature for long-term exposure. AREVA focuses on materials already used in fossil...

  8. Compréhension et modélisation de la rupture fragile des aciers renforcés par nano-précipitation : effets de texture, de vieillissement et de composition

    Rouffié, Anne-Laure

    2014-01-01

    The Oxide Dispersion Strengthened (ODS) steels have been identified as potential materials for fuel cladding in Generation IV nuclear reactors. They are characterized by a very good resistance to swelling under irradiation and to high temperature creep, but questions still remain about the impact toughness of these materials. The first aim of this work is to understand the effects of different parameters (chemical composition, texture, thermal ageing...) on the impact behaviour of ODS steels....

  9. Amélioration des performances du procédé de soudage TIG sur un acier au carbone et un alliage d'aluminium par dépôt de silice

    Sire, Stéphane; Marya, Surendar

    This Note presents ways to improve the weld penetration potential of TIG process by optimising silica application around the joints in a plain carbon steel and an aluminium alloy 5086. Whereas for plain carbon steels, full coverage of joint improves penetration, the presence of a blank zone around the joint in the flux coating on aluminium 5086 using AC-TIG seems to be the best solution for cosmetic and deep welds. To cite this article: S. Sire, S. Marya, C. R. Mecanique 330 (2002) 83-89.

  10. Benefic effects of high nitrogen contents on properties of super austenitic stainless steels for very severe corrosive applications; Interet des fortes teneurs en azote sur les proprietes d`aciers inoxydables super austenitiques pour corrosion severe

    Gagnepain, J.C.; Chavet, M.; Verneau, M.; Dupoiron, F.; Charles, J. [Societe des Forges et Ateliers du Creusot (SFAC), 75 - Paris (France)

    1995-12-31

    New highly allowed austenitic stainless steels (PREN included in the 40/60 range) have been investigated. The effects of allowing elements on mechanical properties, structure stability and corrosion resistance have been defined. As a result, we determine the best equilibria for structure stability and corrosion resistance: the tungsten additions are particularly interesting, since this element, as molybdenum, increases the localised corrosion resistance but presents a lower segregation rate than molybdenum (what is very important for manufacturing heavy plates or bars). This study made us optimize the chemical analysis of a new high nitrogen, high strength, super austenitic stainless steel (URANUS B 66), the properties of which will be described in this paper. (authors). 5 refs., 11 figs., 4 tabs.

  11. Amelioration de la compressibilite d'une nouvelle poudre d'acier a outils pour l'amelioration de la resistance a l'usure a haute temperature de pieces automobiles

    Sioui-Latulippe, Olivier

    The general objective of this project is to improve the compressibility of the TS4 powder to1) increase the amount of TS4A7 powder in the mixes or to 2) increase the density of the parts. Improving the compressibility of the TS4 powder should increase the most important mechanical properties of the parts for the aimed application (hot hardness and wear resistance). The TS4 powder is a tool steel that Philippe Beaulieu [1] developed for his Ph.D.. Parts made with this powder help to reduce production costs (raw materials and process) in comparison with competitors materials. Furthermore, Beaulieu showed that the mechanical properties of the parts made with the mix he conceived specifically for the TS4 powder (LMO mix) are better or similar to those of mixes currently used for the same application (valve seat inserts - VSI). An annealing heat treatment was developed and optimized (HT45opt ) in order to reduce the hardness of the TS4A7 particles and thus increase their compressibility. Designs of experiments were carried out to determine the group of annealing parameters that optimizes the hardness and the friability of the cake after annealing. The duration of the heat treatment and the nature of the protective gas were also taken into account. The thermal profile consists of 1) a first dwell at temperature T1 and a dwelling time of t1, 2) a controlled cooling rate named Delta and 3) a second dwell at temperature T2 and a dwelling time of t2. The values of the parameters of the optimized heat treatment are as follow: T1=1080°C, t1=1h, Delta=300°C/h, T2=720°C, T2=2h, atmosphere=argon. The microhardness of the annealed powder is 438HV0.025 with a standard deviation of 22. Metallurgical bonds are created between the particles during annealing. These bonds are strong enough to make the particles act like a solid. This solid is called a cake. The cake was milled with a disk mill to transform the cake back into a powder. Observations showed that this milling technique does not eliminate all the bonds created during annealing. Thus, small particles (10mum) are still bonded to the coarser particles (50mum) after milling the cake. Furthermore, milling the cake increases the hardness of the annealed powder. After milling the powder cake, the microhardness of the powder is 489HV0.025 with a standard deviation of 18. The effect of annealing on the LMO mix was also investigated. The green density of mixes containing 20%m TS4A7 powder increased from 6.70 to 6.98g/cm3 using the annealed powder instead of the as-atomized powder. The green density of the mix containing 40%m TS4A7 annealed powder was not significantly smaller than that of the mix containing 20%m as-atomized powder (6.67g/cm3). The effect of carbon content of the TS4 powder on the compressibility was also investigated. The powders used for this investigation and their carbon content are as follow: TS4A7 -- 3.66%C, TS4C2.70 -- 2.70%C, TS4C1.51 -- 1.51%C, TS4C0.78 -- 0.78%C. All the powders were annealed and all the LMO mixes produced with these powders contain 40%m of TS4 powder. The results show that the green density increases when the carbon content decreases except for the mix containing the TS4C0.78 because that powder has a large amount of internal porosities. These internal porosities decrease the apparent density of that powder compared to that of the other low carbon TS4 powders (2.81 VS 3.44 and 4.02g/cm3). The green density of the mix with the TS4 A7 annealed powder is 6.67g/cm3 while the green density of the mixes with the TS4C2.70, TS4C1.51 and TS4 C0.78 powders is 6.90, 6.93 and 6.87g/cm3 respectively. The density of the mix containing the TS4C2.70 powder does not change after sintering while the density of the two other mixes decreases after sintering (from 6.93 to 6.86 g/cm3 for LMO40C1.51 and from 6.87 to 6.76g/cm3 for LMO40C0.78). An oxide layer surrounding the TS4C1.51 and TS4C0.78 particles prevented an adequate sintering of the mixes containing these powders. The apparent hardness of the sintered sample containing the TS4C2.70 powder is the largest (67.4HRA) while that of the two others are the smallest. The microhardness of the TS4C2.70 particles in the LMO mix is 962HV 0.025. To conclude, the compressibility of the TS4 powder was increased, but this increase did not have a significant effect on the apparent hardness of the sintered samples produced with the LMO mixes. (Abstract shortened by UMI.).

  12. Analyse du comportement de l'interface acier-béton pas essai push-in. Mesures par fibres optiques et modélisation par éléments finis

    Tixier, Antoine

    2013-01-01

    This research aims at improving the knowledge about the behavior of reinforced concretebuildings. This behavior relies in particular on the steel-concrete link one, allowing to transferstresses between the two materials. Knowing the bond behavior leads to optimise the structuredesign. The specific case of confinement vessels of nuclear structures induces a special link sol-licitation compared to the usual sollicitations (such as presence of traction in the beam lowerfiber). In order to study ...

  13. Sub-micron indent induced plastic deformation in copper and irradiated steel; Deformation plastique induite par l'essai d'indentation submicronique, dans le cuivre et l'acier 316L irradie

    Robertson, Ch

    1999-07-01

    In this work we aim to study the indent induced plastic deformation. For this purpose, we have developed a new approach, whereby the indentation curves provides the mechanical behaviour, while the deformation mechanisms are observed thanks to Transmission Electron Microscopy (TEM). In order to better understand how an indent induced dislocation microstructure forms, numerical modeling of the indentation process at the scale of discrete dislocations has been worked out as well. Validation of this modeling has been performed through direct comparison of the computed microstructures with TEM micrographs of actual indents in pure Cu (001]. Irradiation induced modifications of mechanical behaviour of ion irradiated 316L have been investigated, thanks to the mentioned approach. An important hardening effect was reported from indentation data (about 50%), on helium irradiated 316L steel. TEM observations of the damage zone clearly show that this behaviour is associated with the presence of He bubbles. TEM observations of the indent induced plastic zone also showed that the extent of the plastic zone is strongly correlated with hardness, that is to say: harder materials gets a smaller plastic zone. These results thus clearly established that the selected procedure can reveal any irradiation induced hardening in sub-micron thick ion irradiated layers. The behaviour of krypton irradiated 316L steel is somewhat more puzzling. In one hand indeed, a strong correlation between the defect cluster size and densities on the irradiation temperature is observed in the 350 deg. C - 600 deg. C range, thanks to TEM observations of the damage zone. On the other hand, irradiation induced hardening reported from indentation data is relatively small (about 10%) and shows no dependence upon the irradiation temperature (within the mentioned range). In addition, it has been shown that the reported hardening vanishes following appropriate post-irradiation annealing, although most of the TEM identified clusters seems not to be affected by such thermal treatment. In order to rationalize these results, we suggest that krypton irradiation induced hardening is produced by defect clusters more unstable and smaller than those mentioned. (author)

  14. Local approach: fracture at high temperature in an austenitic stainless steel submitted to thermomechanical loadings. Calculations and experimental validations; Approche locale: fissuration a haute temperature dans un acier inoxydable austenitique sous chargements thermomecaniques. Simulations numeriques et validations experimentales

    Poquillon, D

    1997-10-01

    Usually, for the integrity assessment of defective components, well established rules are used: global approach to fracture. A more fundamental way to deal with these problems is based on the local approach to fracture. In this study, we choose this way and we perform numerical simulations of intergranular crack initiation and intergranular crack propagation. This type of damage can be find in components of fast breeder reactors in 316 L austenitic stainless steel which operate at high temperatures. This study deals with methods coupling partly the behaviour and the damage for crack growth in specimens submitted to various thermomechanical loadings. A new numerical method based on finite element computations and a damage model relying on quantitative observations of grain boundary damage is proposed. Numerical results of crack initiation and growth are compared with a number of experimental data obtained in previous studies. Creep and creep-fatigue crack growth are studied. Various specimen geometries are considered: compact Tension Specimens and axisymmetric notched bars tested under isothermal (600 deg C) conditions and tubular structures containing a circumferential notch tested under thermal shock. Adaptative re-meshing technique and/or node release technique are used and compared. In order to broaden our knowledge on stress triaxiality effects on creep intergranular damage, new experiments are defined and conducted on sharply notched tubular specimens in torsion. These isothermal (600 deg C) Mode II creep tests reveal severe intergranular damage and creep crack initiation. Calculated damage fields at the crack tip are compared with the experimental observations. The good agreement between calculations and experimental data shows the damage criterion used can improve the accuracy of life prediction of components submitted to intergranular creep damage. (author) 200 refs.

  15. Modélisation numérique avec apport de matière du soudo-brasage des assemblages hétérogènes acier/aluminium

    Optasanu, Virgil; Sallamand, Pierre; Martin, Bruno; Montesin, Tony

    2007-01-01

    This study deals with the numerical simulation of heterogeneous brazing of steel / aluminium alloy sheets by CMT process. The difference between the linear expansion coefficients of these materials generates high deformations and residual stress. The addiction of brazing material is simulated. A validation the model is made in the simplest case of a sheet of aluminium alloy with a brazing bead. Comparisons are made between numerical and experimental results on out-of-plane displacements of st...

  16. High temperature cracking of steels: effect of geometry on creep crack growth laws; Fissuration des aciers a haute temperature: effet de la geometrie sur la transferabilite des lois de propagation

    Kabiri, M.R

    2003-12-01

    This study was performed at Centre des Materiaux de l'Ecole des Mines de Paris. It deals with identification and transferability of high temperature creep cracking laws of steels. A global approach, based on C{sup *} and J non-linear fracture mechanics parameters has been used to characterize creep crack initiation and propagation. The studied materials are: the ferritic steels 1Cr-1Mo-1/4V (hot and cold parts working at 540 and 250 C) used in the thermal power stations and the austenitic stainless steel 316 L(N) used in the nuclear power stations. During this thesis a data base was setting up, it regroups several tests of fatigue, creep, creep-fatigue, and relaxation. Its particularity is to contain several creep tests (27 tests), achieved at various temperatures (550 to 650 C) and using three different geometries. The relevance of the C{sup *} parameter to describe the creep crack propagation was analysed by a means of systematic study of elasto-viscoplastic stress singularities under several conditions (different stress triaxiality). It has been shown that, besides the C{sup *} parameter, a second non singular term, denoted here as Q{sup *}, is necessary to describe the local variables in the vicinity of the crack tip. Values of this constraint parameter are always negative. Consequently, application of typical creep crack growth laws linking the creep crack growth rate to the C{sup *} parameter (da/dt - C{sup *}), will be conservative for industrial applications. Furthermore, we showed that for ferritic steels, crack incubation period is important, therefore a correlation of Ti - C{sup *} type has been kept to predict crack initiation time Ti. For the austenitic stainless steel, the relevant stage is the one of the crack propagation, so that a master curve (da/dt - C{sup *}), using a new data analysis method, was established. Finally, the propagation of cracks has been simulated numerically using the node release technique, allowing to validate analytical expressions utilised for the experimental creep test data processing. (author)

  17. Localized corrosion of carbon steels due to sulfate-reducing bacteria. Development of a specific sensor; Corrosion localisee des aciers au carbone induite par des bacteries sulfato-reductrices. Developpement d'un capteur specifique

    Monfort Moros, N.

    2001-11-01

    This work concerns the microbiologically influenced corrosion of carbon steels in saline anaerobic media (3% of NaCl) containing sulfato-reducing bacteria (Desulfovibrio gabonensis, DSM 10636). In these media, extreme localised corrosion occurs by pitting under the bio-film covering the metallic substrate. A sensor with concentric electrodes was designed to initiate the phenomenon of bio-corrosion, recreating the favourable conditions for growth of a corrosion pit, and then measuring the corrosion current maintained by bacterial activity. The pit initiation was achieved through either of two methods. The electrochemical conditioning involved driving the potential difference between inner and outer electrodes to values corresponding to a galvanic corrosion that can be maintained by the bacterial metabolism. The mechanical process involved removal of a portion of the bio-film by scratching, yielding galvanic potential differences equivalent to that found by the conditioning technique. This protocol was found to be applicable to a bio-corrosion study on industrial site for the monitoring of the metallic structures deterioration (patent EN 00/06114, May 2000). Thereafter, a fundamental application uses the bio-corrosion sensor for Electrochemical Impedance Spectroscopy (EIS), Electrochemical Noise Analysis (ENA) and current density cartography by the means of micro-electrodes. Thus, the EIS technique reveals the importance of the FeS corrosion products for initiation of bio-corrosion start on carbon steel. In addition, depending on the method used to create a pit, the ENA gives rise to supplementary processes (gaseous release) disturbing the bio-corrosion detection. The beginning of a bio-corrosion process on a clean surface surrounded with bio-film was confirmed by the current density cartography. These different results establish the sensor with concentric electrodes as an indispensable tool for bio-corrosion studies, both in the laboratory and on industrial sites. (author)

  18. Modélisation du procédé de soudage hybride Arc / Laser par une approche level set application aux toles d'aciers de fortes épaisseurs

    Desmaison, Olivier; Bellet, Michel; Guillemot, Gildas

    2013-01-01

    Le procédé de soudage hybride Arc/Laser est une solution aux assemblages difficiles de tôles de fortes épaisseurs. Ce procédé innovant associe deux sources de chaleur : un arc électrique produit par une torche MIG et une source laser placée en amont. Ce couplage améliore le rendement du procédé, la qualité du cordon et les déformations finales. La modélisation de ce procédé par une approche Level Set permet une prédiction du développement du cordon et du champ de température associé. La simul...

  19. Développement de nouveaux fils fourrés pour le soudage à l'arc d'aciers inoxydables ferritiques destinés à la fabrication des parties chaudes de ligne d'échappement automobile

    Villaret, Vincent; Deschaux-Beaume, Frédéric; Januard, Fabien; Fortain, Jean-Marie; Fras, Gilles; Rouquette, Sébastien

    2010-01-01

    Dans le contexte actuel de raréfaction des énergies fossiles, les constructeurs automobiles cherchent à optimiser l'efficience énergétique de leurs véhicules. Cette amélioration passe par un changement de conception des collecteurs de gaz d'échappement. Les collecteurs tendent vers des pièces mécano-soudés adaptées aux nouvelles contraintes. Ces évolutions passent par le développement et l'utilisation de matériaux résistant à des conditions de service de plus en plus sévères, en termes de ten...

  20. Contribution a l'etude du comportement en fatigue des aciers inoxydables 13%Cr-4%Ni: Contraintes residuelles de soudage et transformation sous contrainte de l'austenite de reversion

    Thibault, Denis

    The objectives of the present study are to characterize some of the main parameters affecting fatigue behaviour of 13%Cr-4%Ni martensitic stainless steels used for hydraulic turbines manufacturing. Two aspects are studied: the residual stresses left after autogenous welding of these steels and the stress-assisted transformation of the reformed austenite contained in this alloy. The residual stresses induced by welding were characterized by four different methods: the hole-drilling method, X-ray diffraction, neutron diffraction and the contour method. The state of stress was characterized in two different joints geometries, both using 41ONiMo weld filler metal. The characterization was made before and after post-weld heat treatment. A stress distribution completely different of the stress distribution commonly found in structural steels was measured. Triaxial compression was found in the last bead with a maximum value of approximately 400 MPa. Tensile stress was measured around the heat-affected zone and just below the last weld layer. The low temperature martensitic transformation occuring during weld cooling (˜300°C) explains this unusual stress distribution. The results also showed that the post-weld heat treatment commonly used in the industry is efficient in lowering residual stresses. A maximum stress of about 150 MPa was found after heat treament. The austenite formed during this post-weld heat treatment is mechanically unstable. The results presented in this thesis show that after fatigue crack propagation testing, all the reformed austenite found near the fracture surface has transformed to martensite under cyclic stress loading. These measurements made by X-ray diffraction are confirmed by low-cycle fatigue tests showing that the reformed austenite found in this alloy transforms gradually to martensite during strain cycling. The transformation is completed after 100 cycles. The fatigue crack growth behaviour of the tested alloys does not seem to be influenced by this phenomenon occuring at all values of stress intensity factor. The practical implications of this work on fabrication and repair of hydraulic turbines made of 13%Cr-4%Ni are also discussed in this thesis. Keywords: martensitic stainless steel, fatigue, residual stress, welding