Academic literature on the topic 'Fear of Vet'
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Journal articles on the topic "Fear of Vet"
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Williams, Jane. "Stress-free vet visits: considering the effects of the COVID-19 pandemic." Companion Animal 27, no. 2 (February 2, 2022): 1–11. http://dx.doi.org/10.12968/coan.2021.0066.
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Visits to the small animal veterinary practice are typically stressful for many animals, especially where they already have an anxious or fearful disposition. Although the purpose of the visit is to improve the animal's welfare (by improving physical health and wellbeing), there may be an impact on the animal's mental health and emotional state. The current pandemic situation has made vet visits even more difficult, because a number of options for preparing for the visit, or carrying out the visit itself, have not always been available. This article considers techniques for minimising fear, anxiety and stress in companion animals being treated at the vet practice, through preparation, protocols and procedures. Principles of good practice when helping animals to have the least stressful experience during a vet visit are considered. Additional special measures for particularly anxious or fearful animals are also discussed. The identification of stress-reducing protocols is largely based on the low-stress handling techniques identified in research and the importance of these as perceived by veterinary staff. Changes within the practice that have impacted animals' anxiety levels, as a result of the COVID-19 pandemic, are identified and considered. Reflections concerning the pandemic experience, as provided to the author by a number of veterinary surgeons and nurses, are recorded and considered as the basis for further research. Consideration is also given to the feasibility and value of retaining some changes implemented during the COVID-19 pandemic.
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Betz, Daniela Simon. "Effektivität von Imepitoin bei Geräuschangst des Hundes." Tierärztliche Praxis Ausgabe K: Kleintiere / Heimtiere 48, no. 01 (February 2020): 56. http://dx.doi.org/10.1055/a-1085-5918.
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Engel O, Müller HW, Klee R et al. Effectiveness of imepitoin for the control of anxiety and fear associated with noise phobia in dogs. J Vet Intern Med 2019; 33 (6): 2675–2684 Geräuschbedingte Unruhe oder Angst ist beim Hund mit einer Prävalenz von bis zu 49 % eine häufige Verhaltensveränderung. Ein Teil der betroffenen Hunde agiert auf Geräusche mit extremen Reaktionen, die einer Phobie beim Menschen ähneln. Imepitoin, ein partieller GABAA-Agonist mit anxiolytischer und antikonvulsiver Wirksamkeit, ist in vielen Ländern (auch Deutschland) zur Therapie der idiopathischen Epilepsie des Hundes zugelassen. Ziel dieser Studie war, die Effektivität und Verträglichkeit von Imepitoin als Anxiolytikum bei Geräuschangst des Hundes im Vergleich zu einem Plazebo zu untersuchen.
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Fanucchi, Leticia. "Dogs’ Preference for White Coat versus No White Coat When Offered a Food Reward in the Exam Room." Open Access Journal of Veterinary Science & Research 7, no. 1 (2022): 1–5. http://dx.doi.org/10.23880/oajvsr-16000219.
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The wearing of a white lab coat during a visit to the veterinarian is common practice in veterinary medicine to avoid cross contamination or the spread of diseases in a clinical setting. “White Coat Effect” in both human and animal medicine has been of research interest. This study sought to explore if the visual of a white coat does in fact play a role in eliciting avoidance in dogs measured by preference for a veterinarian wearing a white coat versus one not wearing it. We investigated whether dogs would choose to retrieve a food reward from the veterinarian not wearing a white coat more often. We predicted that dogs would approach the veterinarian not wearing a coat first, would avoid approaching the veterinarian with the white coat, and would spend more time around the veterinarian not wearing the coat. A modified conditioned place preference paradigm was used to design this study. Two veterinarians were in a room, one wearing a white coat and one not wearing it, with a dog and the dog’s owner. Data was recorded for how many times the dog approached each of the veterinarians, and how much time it spent in proximity of the individuals in the room. Dogs showed preference for the veterinarian not wearing a white coat and spent more time between the owner and the veterinarian not wearing a coat. This study gives insight on how veterinarians can decrease stress during a vet visit. The white coat appears to be a stressor making the visit to the vet more challenging to the canine patient. Veterinarians and staff shall provide a comfortable setting for patients so that they can properly assess and treat them, while decreasing fear of the vet visit.
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Struthers, Karen, and Glenda Strachan. "Attracting women into male-dominated trades: Views of young women in Australia." International Journal for Research in Vocational Education and Training 6, no. 1 (April 25, 2019): 1–19. http://dx.doi.org/10.13152/ijrvet.6.1.1.
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Context: The persistent low female participation in male-dominated trades is not attracting a high level of public attention and policy action. There are determined, yet adhoc actions by advocates in response to evidence that economic benefits will be derived for industry and women through increased female participation in the male-dominated trades. Occupational segregation of the trades remains resistant to change.
Methods: To better understand the barriers limiting female participation in the male-dominated trades from the perspective of young women, this PhD study features interviews with female secondary students, complemented by interviews with industry stakeholders and a quantitative analysis of VET and trade participation data. The three primary research questions are: 1) What is the extent of gender segregation in vocational education and training (VET) and typically male-dominated trades in Australia, and how does this compare internationally? 2) Why do very few female students choose male-dominated trades as their job pathway? 3) What can be done, particularly in the education and training sectors, to increase female interest in, and take-up of, the male-dominated trades?
Findings: The results of this research showed that the composition of trade-qualified females in male-dominated trades is persistently low at 2-3%. The views of young women affirmed the evidence showing system-wide barriers limit female interest in these trades. Most influential is that gender stereotypes of work are set by Year 10 and that female enrolment in Maths (a pre-requisite for male-dominated careers) is low; these trades are seen as “jobs for the boys who don’t do academic,” and the fear of intimidation and harassment deters young women. Low enrolment of female students in male-dominated trade courses indicates that this entrenched occupational segregation of the trades will remain resistant to change for some time to come.
Conclusion: The findings indicate that ad hoc responses to overcome gender segregation of the trades is not effective. Influenced by systems theory and a social ecological model (SEM) of change, the researchers promote the need for sustained, nation-wide awareness and action involving VET and school sectors, industry, government and trade unions to attract more women into male-dominated trades.
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Svirskis, Šimons, Linda Klimavičiusa, and Zane Dzirkale. "Evaluation of “Stress Relief” Dietary Supplement on Animal Stress Level and Locomotion." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 72, no. 4 (August 1, 2018): 216–29. http://dx.doi.org/10.2478/prolas-2018-0027.
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Abstract Search of new approaches for harmless, non-medication treatment of body dysfunctions is still on the agenda of vet and human practitioners and researchers as well. This study presents evaluation of the effect of “Stress Relief” dietary supplement (SR) on mice behaviour under different acute short-term stress conditions and treatment duration. Five experiments were performed and in each 40 animals were randomly split into four (I–IV) groups, where I and II — non-stressed mice, III and IV — stressed animals, I and III received water with trace mineral solution (TMS), II and IV received water with SR. As stress factors, forced swimming, rodent predator odour or both together were applied. Locomotor activity under normal and stress conditions in Open Field were observed and measured by a SMART video-tracking system. Blood glucose level was measured as well. SR showed a reversal of stress-decreased locomotor activity in all stress models — distance walked increased almost twice (p < 0.0001), central zone crossings and time spent in it were 2–4 times greater than in the control group (p < 0.0001 and p = 0.0002, respectively), and fast movement episodes and maximal speed increased by 50–200%. In addition, complete normalisation of stress-induced elevation of blood glucose level (p < 0.0001) was noted. These results demonstrate for the first time that the effect of “Stress Relief” formula (water additives–minerals processed by know-how way in Vital Force Technology using Dr. Yury Kronn method) can be observed in laboratory animals, and that the effects are significant and repeatable. SR shows fear- and stress-reducing activity, which does not sufficiently differ between 7-, 9-, 14-, 28- and 32-day treatment regimes.
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Robinson, Peter. "Discipline must not be based on fear." Veterinary Record 189, no. 1 (July 2021): 38. http://dx.doi.org/10.1002/vetr.709.
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Greenfield, Stuart. "How to recognise fear in canine inpatients." Veterinary Nurse 4, no. 3 (April 2013): 150–55. http://dx.doi.org/10.12968/vetn.2013.4.3.150.
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Kugler, Günter, Doreen Huppert, Erich Schneider, and Thomas Brandt. "Fear of heights freezes gaze to the horizon." Journal of Vestibular Research 24, no. 5,6 (2014): 433–41. http://dx.doi.org/10.3233/ves-140529.
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Natho, G., and E. Köhler. "In memoriam Walter Vent." Feddes Repertorium 120, no. 1-2 (May 2009): 1–2. http://dx.doi.org/10.1002/fedr.200911190.
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Rechinger, K. H. "Labiatae novae vel minus cognitae." Repertorium novarum specierum regni vegetabilis 53, no. 2 (April 20, 2008): 81–84. http://dx.doi.org/10.1002/fedr.19440530202.
Full textDissertations / Theses on the topic "Fear of Vet"
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Urskog, Thorbjørn Solvoll. "ANALYSE AV ALUMINIUMEKSTRUDERING VED EKSPERIMENTER OG FEA." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produktutvikling og materialer, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24544.
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Denne rapporten er sammensatt av to deler, og starter med et bredt teoretisk fundament om ekstrudering, i sær grad, foroverekstrudering. Det meste av teori er hentet fra boken «APPLIED METAL FORMING» skrevet av Henry Sigvart ValbergDet er tidligere gjennomført laboratorieeksperimenter ved NTNU, der stangekstrudering er blitt belyst dersom bærekanalen ikke er parallell. Dessverre eksisterer det ikke grundige eller gode rapporter om disse eksperimentene, slik at en del av denne oppgaven har vært å beskrive, samt rapportere hvilke testresultater som kom frem i disse eksperimentene. Under laboratorieeksperimentene fremkom det for to av fire tester et uventet mønster på ekstrudatet, såkalt bambooing. Det ble derfor interessant å se på om dette fenomenet også kom frem ved datasimuleringer. Modeller av matrisene er blitt konstruert og testet i programvaren DEFORM og sammenlignet med de tidligere laboratorieeksperimentene. Etter flere testforsøk var det mulig å se enkelte sammenhenger mellom presskraft og bambusmønsteret. Simuleringene viste at dersom bæreveggen er tilstrekkelig lang oppstår det luftlommer mellombærevegg og bolt. Dette fører til ujevn friksjon og lugging for stempelet. Slike luftlommer danner sannsynligvis bambusmønster på ekstrudatet I del to av denne rapporten er modellen fra prosjektoppgaven optimalisert. Siden den ikke kunne gjennomføres i prosjektoppgaven ble modellen endret, etter anbefaling fra SFTC, og retestet.Resultater fra undersøkelser, prøver og simuleringer er oppsummert og diskutert i eget kapittel. Rapporten er skrevet i Microsoft Word, de mest komplekse figurene er bygd i Microsoft NX 8.0, mens datasimuleringer er gjennomført i DEFORM 2D og DEFORM 3D versjon 10.1.2.
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Deliancourt, Frédéric. "Etude de l'aérodynamique des trains en situation de vents traversiers : impact de la présence d'appendices." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2015. http://www.theses.fr/2015ESMA0013/document.
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Lorsqu’un train circule en situation de vent traversier, il est exposé à un risque de renversement. L’évaluation de ce risque est possible à partir d’un calcul dynamique basé sur les efforts aérodynamiques, plus particulièrement le moment de renversement. Les coefficients aérodynamiques d’un véhicule ferroviaire peuvent être évalués en soufflerie. Lors de ce type d’essais, le nombre de Reynolds ne peut être respecté. L’expérience a montré que dans ces conditions, une mise à l’échelle directe des détails sur les maquettes de train ne conduit pas nécessairement à une représentation réaliste des efforts aérodynamiques.Ces travaux de thèse portent sur l’étude de l’impact de lignes placées en toiture sur les caractéristiques aérodynamiques de véhicules ferroviaires. Le but est de déterminer dans quelle mesure l’échelle de représentation de ces détails impacte les coefficients aérodynamiques.Deux modèles de trains simplifiés sont employés, le premier est un véhicule idéalisé déjà largement étudié auparavant dans la littérature sur les vents traversiers, le second est plus proche d’un train réel. Les moyens d’investigation employés pour mener cette étude sont principalement expérimentaux. Les efforts et moments aérodynamiques sont mesurés au moyen d’une balance aérodynamique et la répartition de pression à la surface des corps est évaluée à l’aide de capteurs de pression pariétale. Des simulations numériques par approche RANS viennent compléter la base de données afin d’affiner la compréhension de l’écoulement autour du train.Nous avons ainsi démontré que la présence des lignes sur le toit des véhicules augmente le risque de renversement des deux modèles de trains étudiés. Nous avons aussi mis en évidence une forte dépendance de cette augmentation à la taille des lignes de toiture. Une configuration s’est avérée particulièrement critique d’un point de vue industriel. En effet, nous avons identifié une taille des lignes de toiture conduisant à de très faibles modifications des efforts sur le modèle régional. Ainsi, une échelle de reproduction des détails non adaptée lors d’essais de certification pourrait conduire à une large sous-estimation du risque de renversement.Afin de comprendre les causes de l’augmentation du risque de renversement, nous avons identifié les modifications de pression ayant un impact sur les efforts globaux. Nous avons ensuite relié ces modifications de pression à la topologie de l’écoulement. Nous avons finalement démontré que l’augmentation du risque de renversement est liée d’une part à des modifications de pression locales très importantes, mais aussi à des modifications de pression plus globalesWhen expoecd to strong crosswinds, railway trains experience aerodynamic loads which tend to overturn them. The evaluation of the risk of overturning can be done with a dynamic calculation based on the aerodynamic loads and more precisely on the rolling moment. The aerodynamic characteristics of the vehicles can be evaluated in windtunnels. The Reynolds number of a full scale train is not applicable in these tests. Experimental tests showed that a reproduction of the train surface details at the same scale as the model would not necessarily lead to a correct estimation of the real aerodynamic loads.The topic of this work is to investigate the effect of roof mounted cables on the aerodynamic characteristics of railway vehicles. The aim is to determine the influence of the reproduction scale of these appendices on the aerodynamic coefficients. Two train models are employed. The first one is an extensively-studied simplified train model. The second one is more similar to a real train, modelled after a regional train. Visualisation tools are employed to investigate the flow topology. Global aerodynamic loads (lift, lateral force and rolling moment) are evaluated with a dynamometric force balance and surface pressure distribution is evaluated with pressure sensors. Additional RANS numerical simulations are performed to improve understanding of the flow topology.We demonstrated an increase of the risk of overtum for the two train models when cables are added on the roof. We also showed that this increase strongly depends on the cable's size.To understand this increase, we identified pressure modifications which are involved in the global load modifications. Then, we linked these pressure changes to flow topology. We finally showed that the incrcase of the risk of overtun is both due to local and global pressure modifications
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Carvalho, Luiz Fernando Meneses. "Tratamentos de fibras de carna?ba [copernicia prun?fera (miller) h. e. moore] para o desenvolvimento de comp?sito biodegrad?vel com matriz de polihidroxibutirato." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12780.
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Previous issue date: 2011-06-20Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior
The use of raw materials from renewable sources for production of materials has been the subject of several studies and researches, because of its potential to substitute petrochemical-based materials. The addition of natural fibers to polymers represents an alternative in the partial or total replacement of glass fibers in composites. In this work, carnauba leaf fibers were used in the production of biodegradable composites with polyhydroxybutyrate (PHB) matrix. To improve the interfacial properties fiber / matrix were studied four chemical treatments to the fibers..The effect of the different chemical treatments on the morphological, physical, chemical and mechanical properties of the fibers and composites were investigated by scanning electron microscopy (SEM), infrared spectroscopy, X-ray diffraction, tensile and flexural tests, dynamic mechanical analysis (DMA), thermogravimetry (TGA) and diferential scanning calorimetry (DSC). The results of tensile tests indicated an increase in tensile strength of the composites after the chemical treatment of the fibers, with best results for the hydrogen peroxide treated fibers, even though the tensile strength of fibers was slightly reduced. This suggests a better interaction fiber/matrix which was also observed by SEM fractographs. The glass transition temperature (Tg) was reduced for all composites compared to the pure polymer which can be attributed to the absorption of solvents, moisture and other low molecular weight molecules by the fibers
O uso de mat?rias-primas de fontes renov?veis para a produ??o de materiais vem sendo objeto de diversos estudos e pesquisas, devido ao seu potencial na substitui??o de derivados petroqu?micos. A adi??o de fibras vegetais a pol?meros representa uma alternativa na substitui??o parcial ou total de fibras de vidro em comp?sitos. Neste trabalho, fibras da folha de carna?ba (Copernicia prun?fera) foram utilizadas na produ??o de comp?sitos biodegrad?veis com matriz de polihidroxibutirato (PHB). Para melhorar as propriedades interfaciais fibra/matriz foram estudados quatro tratamentos qu?micos, para as fibras. O efeito dos diferentes tratamentos qu?micos nas propriedades morfol?gicas, f?sicas, qu?micas e mec?nicas das fibras e dos comp?sitos foram investigados por microscopia eletr?nica de varredura (MEV), espectroscopia no infravermelho, difra??o de raios-X, ensaios mec?nicos de tra??o e flex?o, an?lise din?mico-mec?nica (DMA) e an?lises t?rmicas por termogravimetria (TG) e calorimetria explorat?ria diferencial (DSC). Os resultados dos ensaios de tra??o dos comp?sitos indicaram um acr?scimo de resist?ncia ? tra??o ap?s modifica??o qu?mica das fibras, sendo o melhor resultado obtido com o tratamento de per?xido de hidrog?nio, mesmo havendo uma pequena redu??o na resist?ncia ? tra??o das fibras tratadas. Isto indica uma melhor intera??o entre as fibras e a matriz polim?rica que foi tamb?m observada nas imagens de microscopia eletr?nica de varredura. A temperatura de transi??o v?trea (Tg) foi reduzida para todos os comp?sitos em rela??o ao pol?mero puro o que foi atribu?do a absor??o de solventes, umidade e outras mol?culas de baixo peso molecular pelas fibras
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Thomas, Roland. "L'instabilité modulationnelle en présence de vent et d'un courant cisaillé uniforme." Phd thesis, Aix-Marseille Université, 2012. http://tel.archives-ouvertes.fr/tel-00716089.
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Cette thèse étudie l'influence du vent sur l'instabilité modulationnelle. Une première partie unifie les travaux de Segur et al. qui intègrent la dissipation et ceux de Leblanc qui prennent en compte le vent. Une équation non linéaire de Schrödinger est établie avec un terme additionnel linéaire résultant de la compétition entre le vent et la dissipation. La dissipation est traduite par le modèle de Lundgren et l'effet du vent se manifeste par l'intermédiaire de la pression atmosphérique selon le modèle de Miles. La profondeur est finie. Une étude de stabilité de l'onde de Stokes est détaillée, et des simulations numériques sont menées pour illustrer les résultats. Des expérimentations sont menées pour apporter une validation qualitative à ces travaux. Cette première partie a été validée par une publication au Journal of Fluid Mechanics~(2010). La deuxième partie étudie l'influence du vent sur l'instabilité modulationnelle par l'intermédiaire de la vorticité qu'il crée en surface. Le modèle est simplifié par l'hypothèse d'un écoulement unidirectionnel et d'une vorticité constante. La profondeur est encore supposée finie. Une équation non linéaire de Schrödinger est établie, qui prend en compte cette vorticité constante. La stabilité de l'onde de Stokes est alors étudiée en détail (diagramme d'instabilité en fonction de la vorticité et de la profondeur, bande d'instabilité, taux d'instabilité, etc.). Il est démontré qu'une vorticité négative, au delà d'un certain seuil, supprime l'instabilité modulationnelle indépendamment de la profondeur. Cette deuxième partie a été soumise pour publication au journal Physics of Fluids.
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Nascimento, Luciana Ara?jo. "Diagn?stico da poss?vel influ?ncia da atividade petrol?fera em sedimentos de fundo da Bacia Piranhas-A?u, regi?o Baixo A?u/RN." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12885.
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Previous issue date: 2008-09-19It is located in an area of increasing oil exploration, the region of the Lower A?u is at the mercy of a possible pollution generated by this economic activity, which includes various chemical substances harmful to health, such as metals. This thesis aims to, diagnose the areas of River Piranhas-A?u, a region of the Lower A?u, which are polluted by traces factors and more. In this study, it was determined the concentration of the chemica elements Al, CD, Cr, Cu, Fe, Mn, Ni, P, Pb, V and Zn, through the technique of ICP-OES analysis and the size of sediments and their contents organic matter. Were mapped by GPS, 12 points from collections. The interpretations of the results, together associating that allowed pollution to a possible contamination by oil activity. The results showed tha some regions have low concentrations of cadmium, lead, copper, manganese and zinc unable to promote damage to human health. However, there are places where the concentrations of certain metals chromium, iron and zinc are moderately polluted compared to the results with the reference values of literature and others that are highly polluted by iron. However, due to a greater number of wells in production in those locations, those higher concentrations, it can be suggested a possible influence of oi production in some areas with concentrations of chromium and lead are higher than the rest of the points of monitoring. Moreover, it is observed that the highest levels of metals found in sediment of finer texture and more organic matter content
Por estar situada em uma ?rea de crescente explora??o petrol?fera, a regi?o do Baixo A?u encontra-se ? merc? de uma poss?vel polui??o gerada por esta atividade econ?mica, que inclui diversas subst?ncias qu?micas prejudiciais ? sa?de, tais como os metais. Esta disserta??o tem como objetivo, diagnosticar as ?reas do Rio Piranhas-A?u, regi?o do Baixo A?u, que se encontram polu?das por elementos maiores e tra?os. Neste estudo, determinou-se a concentra??o dos elementos qu?micos Al, Cd, Cr, Cu, Fe, Mn, Ni, P, Pb, V e Zn, atrav?s da t?cnica de ICP-OES e das an?lises granulom?tricas dos sedimentos e seus respectivos teores de mat?ria org?nica. Foram mapeados por GPS, 12 pontos de coletas. As interpreta??es dos resultados, em conjunto, possibilitaram associar essa polui??o a uma poss?vel contamina??o pela atividade petrol?fera. Os resultados mostraram algumas regi?es que apresentam baixas concentra??es de c?dmio, chumbo, cobre, mangan?s e zinco, incapazes de promover preju?zos ? sa?de humana. No entanto, h? localidades nas quais as concentra??es determinadas dos metais cromo, ferro e zinco s?o moderadamente polu?das, comparando-se esses resultados com valores de refer?ncia da literatura e outras que s?o altamente polu?das por ferro. No entanto, devido a uma maior quantidade de po?os em produ??o nessas localidades, essas maiores concentra??es, pode-se inferir uma poss?vel influ?ncia da produ??o de petr?leo em algumas ?reas cujas concentra??es de cromo e chumbo s?o mais elevadas que o restante dos pontos de monitoramento. Al?m disso, observa-se que os maiores teores de metais ocorrem em sedimento de textura mais fina e com maior teor de mat?ria org?nica
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Cam, Anh Tuan. "Le chemin de fer Haiphong - Yunnan (1898-1945)." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM3018.
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La construction et l'exploitation de la ligne Haiphong-Yunnan avaient lieu dans le cadre de la présentation française au Viet Nam, débutée en1858 par l'attaque du port de Tourane (Đà Nẵng) et interrompue en 1945, après le coup de force japonais et la déclaration de l'indépendance du Vietnam. En réalité, les processus de construction et d'exploitation de cette ligne avaient une influence sur la société et sur l'économie du Tonkin dans la période coloniale. L'objectif de cette thèse donc consiste à examiner ces influences socio-économiques et sociopolitiques de ce chemin de fer. De plus, la thèse vise également 1) à la vie des travailleurs sur les chantiers de construction dans la haute région du Tonkin, 2) à la rentabilité de la Compagnie des chemins de fer de l'Indochine et du Yunnan et 3) au rôle de cette ligne dans la Deuxième Guerre MondialeThe construction and the operation of the Haiphong-Yunnan railway took place in the framework of the French presentation in Viet Nam, started by the attack in 1858 at the port Tourane (Da Nang) and suspended in 1945, after the Japanese coup and the declaration of the independence of Vietnam. In fact, the process of construction and operation of this line had an influence on the society and the economy of Tonkin. The objective of this thesis is to examine the socio-economic and socio-political influences of this railway. In addition, the thesis also aims 1) to the lives of workers on construction sites in the Upper-Tonkin, 2) the profitability of the Company railways Indochina and Yunnan and 3) the role of this line throughout the Second World War
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Henriquez, Gonzalez Magaly. "Etude d’un traitement multifonctionnel vert pour la protection contre la corrosion de l’acier au carbone API 5L-X65 en milieu CO2." Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0030/document.
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L’objectif de ce travail de thèse a été d’évaluer les propriétés inhibitrices de corrosion d’un traitement multifonctionnel utilisé dans l’industrie pétrolière. Dans la première partie de la thèse, l’influence des conditions hydrodynamiques, du temps d’immersion et de la température sur les processus de corrosion de l’acier API 5L-X65 en milieu CO2 en l’absence d’inhibiteur a été étudiée par des mesures électrochimiques (courbes de polarisation, courbes de Levich et spectroscopie d’impédance électrochimique) avec une électrode à disque tournant. A partir de ces essais, la vitesse de corrosion a été calculée pour les différentes conditions expérimentales. L’analyse couplée des résultats électrochimiques et des analyses de surface suggèrent la formation d’une couche de produits de corrosion, principalement de carbonate de fer qui recouvre la surface du métal et conduit à la diminution de la vitesse de corrosion quand le temps d’immersion, la vitesse de rotation et la température augmentent. La deuxième partie de la thèse a été consacrée à l’évaluation d’un traitement multifonctionnel contre la corrosion. Ce traitement est composé principalement de produits extraits de l’Aloe Vera (gel de l’Aloe Vera et « acibar »). Ces produits ont été choisis car ils empêchent la formation simultanée d’hydrates et de carbonate de calcium. Ces composés « verts », ainsi que la dodécylamine, qui est un inhibiteur de corrosion commercial, ont été testés à l’aide des mesures électrochimiques et par perte de masse afin de comparer leur efficacité et d’évaluer un possible effet de synergie lorsqu’ils sont utilisés en mélange. Les produits testés séparément ont un pouvoir protecteur comparable et il n’a pas été mis en évidence d’effet de synergie. En revanche, il a été montré que les composés sont compatibles entre eux. Ceci constitue un point très important pour l’utilisation de ces traitements qui permettent d’augmenter la fiabilité et la rentabilité pour la production du pétrole et du gazThe objective of this work was to evaluate the corrosion inhibitive properties of a multifunctional treatment used in the petroleum industry. In the first part of the thesis, the influence of hydrodynamic conditions, immersion time and temperature on the corrosion process of API 5L-X65 steel in CO2 medium in absence of inhibitor was studied by electrochemical measurements (polarization curves, Levich curves and electrochemical impedance spectroscopy) with a rotating disk electrode. From these tests, the corrosion rate was calculated for different experimental conditions. The analysis of the electrochemical results and surface analyses suggest the formation of a layer of corrosion products, mainly iron carbonate which covers the metal surface and leads to the decrease of the corrosion rate when the immersion time, the rotation speed and temperature increase. The second part of this work was devoted to the evaluation of a multifunctional treatment against corrosion. The treatment is mainly composed Aloe Vera extracts (Aloe Vera gel and "acibar”). These products were chosen because they prevent the simultaneous formation of hydrates and calcium carbonate. These "green" compounds and dodecylamine, which is a commercial corrosion inhibitor, were tested using electrochemical measurements and by mass loss in order to compare their efficiency and to evaluate a possible synergistic effect when they are used as a mixture. The products tested separately have a similar efficiency and did not reveal any synergistic effect. However, it was shown that the compounds are compatible. This is an important point for the use of these treatments which can increase the reliability and profitability for the production of oil and gas
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Ripoche, Nicolas. "Triphenylmethylium-based multitopic two-photon absorbers : synthesis and characterization." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S149/document.
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Au cours de cette thèse, de nouveaux dérivés organométalliques basés sur une structure triphénylméthylium ont été synthétisés. Ces composés, notamment grâce à leur structure multiplolaire, sont pressentis pour avoir des propriétés remarquables en optiques non linéaire (ONL) qui pourraient donner lieu à des développements appliqués dans plusieurs domaines. Ces caractéristiques, et plus précisément leur absorption biphotonique (A2P), en font des composés particulièrement intéressants pour l'industrie de pointe (microfabrication, imagerie, dispositifs optiques, etc.). Cependant, ces propriétés d'ONL et d'absorption biphotoniques n'ont été jusqu’à lors que peu étudiées, malgré leur potentiel prometteur. Dans un premier temps, une famille de nouveaux composés organiques présentant cette structure particulière, a donc été synthétisée afin de confirmer le potentiel d'absorption à deux photons de ces chromophores, notamment par des mesures Z-scan. Dans un second temps, la synthèse de d’analogues organométalliques ayant des groupes donneurs tels que «Fe(η5-C5Me5)(κ2-dppe)C≡C− , « Ru(Cl)(κ2-dppe)2C≡C− » ou ethynylferrocene a été réalisée et ces dérivés ont été extensivement caractérisés. Ces dérivés organométalliques devraient présenter des sections efficaces d’A2P (ainsi que des réponses ONL de troisième ordre) dans le proche-IR bien supérieures à celles de leurs analogues organique. De plus les groupements métalliques redox-actifs devraient permettre d’obtenir des chromophores électro-commutables. Dans cet objectif, les études déjà réalisées sur ces composés joints à l’étude à venir de leur propriétés ONL de troisième ordre et permettra de mieux comprendre les phénomènes electroniques sous-jacents à ces propriétés et le rôle joué par les parties organique et organométalliques de leur structureDuring this PhD, new organic and organometallic triphenylmethylium dyes were synthesized. Due to their multipolar structure, these compounds have been anticipated to possess strong nonlinear optical (NLO) properties which could be of interest in many fields. These characteristics, and more precisely their two-photon absorption (TPA) properties, make them attractive for the design of high technology materials (microfabrication, imaging, optical devices, etc…). However, their multiphoton absorption properties and other related nonlinear optical (NLO) effects have not been thoroughly investigated to date, in spite of their promising potential. In this respect, a family of organic derivatives has been synthesized to confirm their potential as two-photon absorbers, which was established thanks to Z-scan measurements. Organometallic compounds bearing electron-releasing groups such as «Fe(η5-C5Me5)(κ2-dppe)C≡C−» , « Ru(Cl)(κ2-dppe)2C≡C− » or ethynylferrocene were then synthesized and fully characterized. These organometallic dyes should possess larger TPA cross-sections (and also larger third-order NLO properties) in the NIR range than their organic counterparts. Furthermore, these redox-active metal centers permit access to electro-switchable molecules. In this respect, along with the data already gathered on these derivatives, the study of their cubic NLO properties in their different redox states will now contribute to a better understanding of the underlying electronic phenomena and the role played by the organic and organometallic moieties in such architectures
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Thorette, Jacques. "Contribution à l'étude de l'hydrothermalisme océanique : exemple du district minéralisé de York-Harbour (massif ophiolitique de Blow-Me-Down, Bay-of-Islands, Terre-Neuve)." Brest, 1986. http://www.theses.fr/1986BRES2002.
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Les mineralisations a cu-fe-zn de york-harbour sont encaissees dans l'unite volcanique situee au sommet de l'ophiolite cambrienne de blow-me-down. Celle-ci s'est formee a l'axe d'une dorsale oceanique a proximite d'une faille transformante. L'organisation en synclinal du secteur mineralise resulte du rejet des failles synvolcaniques en direction nord 135 et nord 45
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Jacobsson, Madeleine. "Dr. Eleine Mad." Thesis, Kungl. Konsthögskolan, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kkh:diva-587.
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Dr. Eleine Mad är Madeleine Jacobsssons talesperson för dom vetenskapliga och paranormala upptäckter som uppstår i hennes världar. Hon beskriver innehåll, teknik och estetik utifrån ett kategoriseringssytem där konsten delas upp som olika typer av komponenter och därefter avkodas dessa allteftersom. För att förstå intuitionens inblandning i arbetsprocessen omförvandlas den till tre separata roller av en Sökare, Samlare och Myntare. Med rollerna försöker jag beskriva på vilka sätt som intuitionen är till gagn eller av förödelse för det konstnärliga arbetet. Sagan om M handlar om en grodlik karaktär, Delop, som lämnar sin hemplanet för att uppsöka andra världar. I sitt sökande hittar Delop ett folkslag vars syn och levnadssätt skiljer sig från hennes erfarenheter av “verkligheten” såsom hon lärt sig att överleva i den.Dr. Eleine Mad is Madeleine Jacobsson's spokesperson for the scientific and paranormal discoveries that arise in her worlds. She describes content, tecniques and aesthetics based on a categorization system where art is divided into different types of components and then decoded as they go. To understand the intuition's involvement in the work process, it is transformed into three separate roles by a Seeker, Collector and a Myntare(In swedish language the one who is a "myntare" -is verbally declaring a concept or term). With these roles I try to describe in what ways intuition is beneficial or devastating to the artistic work. The story of M is about a frog-like character, Delop, who leaves the home planet to seek out other worlds. In her search, Delop finds a world whose views and lifestyles differ from her experiences of "reality" as she learned to survive in it.
Recorded sound and image material of the presentation is available for private use.
Books on the topic "Fear of Vet"
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Fenomen narodofobii: XX vek : materialy nauchnoĭ konferent︠s︡ii, Kazanskiĭ universitet, ii︠u︡nʹ 1994 g. Kazanʹ: [s.n.], 1994.
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Aufauvre, Brigitte-Violaine. Qui fera taire le vent?: Assemblées de prière charismatiques. Paris: Desclée De Brouwer, 1988.
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Strakhŭt v bŭlgarskata literatura prez 19-ti i nachaloto na 20-ti vek. V. Tŭrnovo: Universitetsko izdatelstvo "Sv. sv. Kiril i Metodiĭ", 2013.
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Hall, David. Dying of AIDS, dying of fear: Barriers to VCT uptake in a Lesotho garment factory. Maseru: ALAFA, 2007.
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Hall, David. Dying of AIDS, dying of fear: Barriers to VCT uptake in a Lesotho garment factory. Maseru: ALAFA, 2007.
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Bruno, St-Aubin, ed. La proie des ombres. Saint-Lambert, Québec: Dominique et compagnie, 1998.
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Shojai, Amy. My Dog Hates My Vet!: Foiling Fear Before, During & After Vet Visits. Amy Shojai, 2017.
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Storm Rescue #6 (Vet Volunteers). Puffin, 2008.
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Va-t'en, Grand Monstre Vert! Kaleidoscope, 2006.
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Va-t'en grand monstre vert ! KALEIDOSCOPE, 2021.
Find full textBook chapters on the topic "Fear of Vet"
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"MONEDAS Y EMISIONES POSTALES, CADA VEZ MÁS FEAS Y ESTRAFALARIAS." In Los símbolos políticos, el ceremonial y las distinciones oficiales del Reino de España, 215–18. Dykinson, 2019. http://dx.doi.org/10.2307/j.ctvr7f9c6.13.
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Worthy, Ben. "The Parliamentary passage: asymmetric warfare." In The Politics of Freedom of Information. Manchester University Press, 2017. http://dx.doi.org/10.7228/manchester/9780719097676.003.0006.
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This chapter examines the legislative process in Parliament. A wide but fragile alliance sought to strengthen the bill but was caught between the desire to move the policy in a more radical direction and the fear that the government would drop the bill that, after all, attracted little electoral support. The FOI bill reached Parliament following two highly regarded committee investigations in House of Commons and Lords. The government faced an increasingly assertive and expert alliance of Parliamentarians in both houses seeking a ‘stronger’ law, supported by campaigns by the national media. The government foresaw a difficult passage (Straw 2012). The government veto power was weakened and clauses made for better balancing tests when decisions to release were even. An ‘ultimate’ confrontation was foreseen for the final House of Lords stage when a cross-party grouping of Peers appeared set to hold out for a much stronger piece of legislation. However, amid rumours FOI would be dropped and behind-the-scenes deals, the alliance in the House of Lords was forced to choose between losing the bill and having a slightly improved Act on the statute books. The FOI bill was then finally subject to an abrupt, curtailed final debate in the Commons.
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Lenowitz, Jeffrey A. "Legitimation Device." In Constitutional Ratification without Reason, 256–304. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780198852346.003.0009.
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This chapter interrogates ratification’s capability of creating a legitimate constitution through the four pathways discussed in chapter 8. This involves testing the most plausible or popular arguments for each. Substantive moral legitimation and substantive sociological legitimation are treated together. Ratification might ensure that the contents of a constitution are or are perceived to be morally legitimate by, to follow Condorcet, filtering out illegitimate constitutions via rejection. Or the fear of a future veto might prevent framers form writing an illegitimate constitution in the first place. Procedural moral legitimation depictions of ratification either invoke constituent power—examined and rejected in previous chapters—or utilize consent, conceptualizing the procedure as the means through which citizens consent to a constitution and pick up obligations to obey. The chapter goes on to consider two examples of procedural sociological legitimation. The first posits that most citizens simply believe that ratification is necessary for a legitimate constitution, while the second casts ratification as a participatory moment in constitution-making and appeals to findings linking participation with beliefs in legitimate outcomes. As with previous attempts to justify ratification, these legitimacy justifications come up short. Among other things, they are theoretically implausible, assume the existence of norms that cannot be guaranteed, rely on empirical findings that are unknown or misinterpreted, and or involve morally problematic manipulation.
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Chí Bền, Nguyễn. "The role of community in behaviors towards water in the red river delta and the central highlands of Vietnam." In The Cultural Dynamics in Water Management from Ancient History to the Present Age, 197–210. IWA Publishing, 2021. http://dx.doi.org/10.2166/9781789062045_0197.
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Abstract In Vietnam, the region of Red River Delta is the primary living space of the Viet ethnic group; whereas, the Central Highlands region is currently the home of 11 ethnic minority groups. Water is a valuable natural resource essential to these communities’ existence, development and creation. Thus, throughout their long history, these communities have developed a specific attitude towards water: they need, treasure and fear water at the same time. Inhabitants of both the Red River Delta and the Central Highlands worship water gods and they consider these gods supreme beings in the pantheon. The development of the cult of water in the two regions has been attributed to the role of associated communities. However, due to the differences in geographical, geo-historical and geo-cultural positions and trajectories between the Red River Delta and the Central Highlands, the role of the community in the emergence and development of the cult of water in these two regions are also different. This chapter, therefore, will examine the role of the community in the cult of water, which is manifested through: the role of priests, the role of villages and other subjects and objects associated with the cult of water in the two regions. The result of this study provides an overview of culture–religion history developed in different cultural spaces of Vietnam.
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Paranaiba, Simone Cássia Felisbino, Frederico Fonseca da Silva, and Paulinho Rene Stefanello. "Gestão nas empresas do agronegócio utilizando a governança corporativa no mercado atual." In Coletânea Universitária, 143–68. 2nd ed. Editora FaCiencia, 2023. http://dx.doi.org/10.29327/567563.2-5.
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A utilização das práticas de governança corporativa vem fazendo parte das empresas, tornando-se uma importante fer- ramenta para gestão empresarial. Deste modo, o objetivo principal do estudo foi analisar a importância da aplicabilidade da Governan- ça Corporativa na gestão de empresas rurais, ou seja, no agrone- gócio, no contexto da economia atual. A pesquisa foi realizada atra- vés de revisão bibliográfica. Ao final, conclui-se que a Governança Corporativa contribui para a boa gestão do agronegócio, porém, é necessário que o empresário esteja flexível as mudanças, pois com a aplicação da governança corporativa, percebeu-se os benefícios da adoção das boas práticas, contribuindo com a perenidade do ne- gócio. Ressalta-se o sobre a necessidade de se adaptar diante da velocidade das inovações no mercado atual, globalizado, utilizando da tecnologia e diminuindo as distâncias, deixando de existir então o perfil conservador na gestão do agronegócio.
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Guilhamon, Elizabeth. "Entre les lignes : le franchissement du rideau de fer dans Ma vraie famille (2002), Vent d’Ouest (2011) et Rendez-vous l’an prochain (2013)." In La RDA et la société postsocialiste dans le cinéma allemand après 1989, 135–48. Presses universitaires du Septentrion, 2018. http://dx.doi.org/10.4000/books.septentrion.32542.
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Pinchevski, Amit. "Virtual Therapy and the Digital Future of Traumatic Past." In Transmitted Wounds. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190625580.003.0008.
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Post-traumatic stress disorder (PTSD) presents a puzzling pathology of memory. An event, usually experienced with great fear and distress, is remembered not through typical recollections of past occurrences, upsetting as they may be, but instead as repeated and intrusive re-experiencing of the event as if happening once again. This is more or less the description of a disorder officially recognized by the American Psychiatric Association in 1980, but whose history can be traced back to the middle of the nineteenth century. As critical accounts by Ian Hacking, Ruth Leys, and Allan Young have shown, the very notion of traumatic memory is a distinctively modern development, which introduced new dimensions to the understanding of human memory more generally. In the spirit of modern progress, pathology of memory calls for therapy of memory, and the question of how to treat post-trauma inevitably involves the question of how to penetrate traumatic memory. That this memory is such that resists normal memorization renders any therapy a form of intermediating between past and present. In fact, it might be possible to run through the history of trauma therapies as a story of the challenge of accessing and retrieving traumatic memory. This chapter ventures no such enterprise. But its subject matter might be considered as a most recent episode in that story, in which access and retrieval of traumatic memory are performed by means of digital media technology. Virtual Reality Exposure Therapy (VRET) is a clinical therapy project that employs digital virtual reality platform for treating war-related PTSD. Developed chiefly by psychologist Albert “Skip” Rizzo at the Institute for Creative Technology of the University of South California, the project draws on principles of exposure therapy, a cognitive-behavioral method whereby the patient is exposed to stimuli associated with the fearful event in order to achieve habituation. Its most recent configuration is Virtual Iraq- Afghanistan: an Xbox videogame- based platform currently in use at more than sixty locations, including hospitals, military bases, and university centers.
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"Fig. 23 Baffle plate above surface. (From Ref. 29.) portant to avoid air incorporation or foaming), the baffle plate can be lowered to pre-vent splashing. This allows the mixer to be emulsifying at highest speed and, hence, highest shearing rates while avoiding aeration. All mixers or mixing systems must provide flow to all areas of the process ves-sel if they are to be deemed successful. In the case of these axial-flow rotor/stator mixers, the flow emanates from the mixing head and flows in a single direction. In order for the flow to reach every area of the vessel, it must deflect off the baffle plate and then the sidewall. If the mixer cannot produce enough flow to reach the sidewall, then a dead spot exists. The amount of flow required and the amount of flow produced by a given size mixer depends on the viscosity and the design of the specific mixer. The manufacturer should know the pumping capabilities of their mixers at different viscosities in order to select equipment for different size mixing vessels. Table 4 shows the abil-ity of a typical axial-flow rotor/stator mixer. The batch size that can be handled on a macroscale basis can be determined from Table 4 for the axial-flow rotor/stator mixer if the diameter of the process vessel and the diameter of the rotor are known. This is a trial-and-error problem. By choosing a batch size, vessel diameters can be obtained by use of standard-size vessels. If a fea-sible mixer can be installed in a standard-size vessel, the total system capital cost can probably be lowered. The rotor diameters that are available for trial-and-error solution are usually set by the manufacturer. That is, various sizes are available but not an in-finite variety. As an example, take a 1000 gal. process tank with a 72 in. diameter. If a6.5 in. diameter rotor unit is used, a viscosity of up to about 9000 centipoise can be pumped." In Pharmaceutical Dosage Forms, 350. CRC Press, 1998. http://dx.doi.org/10.1201/9781420000955-46.
Full textConference papers on the topic "Fear of Vet"
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Jelínková, Jaroslava. "Obava z komunikace v cizím jazyce ve výuce: Česká adaptace škály Foreing Langue Classroom Anxiety Scale." In Učení a vyučování cizím jazykům ve výzkumu. Brno: Masaryk University Press, 2020. http://dx.doi.org/10.5817/cz.muni.p210-9822-2020-1.
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Quality communication between a teacher and a student or students contributes to the process of learning not only a foreign language. Contrarily, fear of communication can significantly harm communication. The present study provides information on the process and results of scale adaptation, which measures foreign language anxiety (Horwitz, Horwitz & Cope, 1986). The process of adaptation to Czech conditions included the verification of content validity, construct validity, and the identification of a factor structure of the instrument. Based on the results of the exploratory factor analysis in the STATISTICA 13.3 program, a reduction from thirty-three to thirteen items was proposed. The internal consistency of the adapted Foreign Language Classroom Anxiety Scale showed a sufficient Cronbach's alpha coefficient of 0.82.
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Kachlík, Petr. "Risk of Mobile Phone Addiction in Secondary School Pupils." In Život ve zdraví 2021. Brno: Masaryk University Press, 2021. http://dx.doi.org/10.5817/cz.muni.p280-0076-2021-2.
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Background: the urge to use mobile devices constantly and anxiety that might come in case of impossibility to use them, represent one of the forms of behavioral addictions, the so-called nomophobia. Nomophobia negatively affects all attributes of human health, seriously affects its mental, physical and social components. Objectives: the main objective of the research was to determine the degree of nomophobia in a sample of secondary school students, the partial objective was to map potentially risky areas with the use of modern information and communication technologies. Methods: a quantitative method was chosen to carry out the survey, and an anonymous questionnaire containing a standardized core was used as a research tool. It consisted of 20 items focused on respondents' reactions in situations where communication links are not available or cannot be used. The survey was conducted in the eighth and ninth grades of 11 randomly selected primary schools in the Hradec Králové region. Data were obtained from 373 respondents with a balanced representation of boys and girls. 3 working hypotheses were established to compare the opinions, behavior and degree of nomophobia between boys and girls. The answers were evaluated by methods of descriptive statistics, Student's t-test was used to analyze the hypotheses. Results: 0.5% of respondents did not show symptoms of nomophobia, a very mild and moderate form was recorded in 70% of respondents, mild form in 18% of the group, moderate in 8% and severe in 2% of respondents. Almost three-fourths of the students were not directly at risk of dependence on a mobile, but a tenth of the sample showed serious problems of a behavioral addiction nature. Respondents used an average of 4 applications, mainly communication programs, social networks and music players. Conclusions: girls in the sample showed a higher rate of nomophobia than boys. The biggest differences in responses were mainly for fears of not being able to communicate immediately with family or friends.
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Ceyhan, I., S. Vasantharajan, P. V. Suryanarayana, U. B. Sathuvalli, A. Helou, and P. Barde. "Novel Experimental Method to Determine the Performance of Vacuum Insulated Tubing VIT for Deepwater Applications." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31260-ms.
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Abstract Vacuum insulated tubing (VIT) is a specialized tubular designed to minimize heat loss from production or injection fluids to the environment in oil, gas and geothermal wells. VIT strings are used in deepwater wells for flow assurance or to mitigate annular pressure buildup. VIT use requires accurate knowledge of its insulating performance. Although VIT performance can be estimated from analytical tools, such as finite element analysis (FEA), an experimental approach provides a more direct measurement and can be used to validate analytical tools. We have developed a new experimental method to address this need. In this method, one or two VIT joints are placed in an ice-water bath. A precisely measured flow of heated air flows inside the VIT. The temperature change of the flowing air is measured between the inlet and outlet of the VIT test specimen. The insulating performance of the VIT is then calculated from this temperature difference using heat exchanger theory with effectiveness-number of transfer units (&#ξ03B5;-NTU) approach. A proportional-integral-derivative (PID) controller is used to control the air temperature at the VIT inlet by regulating power to the heater. This paper illustrates the data reduction method and uncertainty analysis using sample test data. The method allows for rapid measurement of VIT performance at many different temperatures, with the air flow rate being used to optimize the test sensitivity and to reduce experimental uncertainty. As currently designed, the apparatus is able to test single- and double-joint VITs with effective body conductivities between 0.002-0.1 W/m/°C (0.001-0.06 Btu/hr/ft/°F) and temperatures up to 400°C (750°F); however, the design allows the apparatus to be modified easily for higher or lower conductivities. Although designed for VIT, this method may be applied to other types of tubulars. Currently, there is no widely accepted standard method for experimental testing of VIT performance, and it is hoped that this new method may evolve to an industry standard.
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Cao, Zhenning, Zhishang Yang, and Yuping Yang. "Comprehensive Thermal Solution Procedures for Laser Forming." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2644.
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Comprehensive thermal solution procedures (CTSP) are developed to predict temperature history during laser forming process. The CTSP can provide not only fast and accurate results, but also many useful features, such as convection boundary conditions and distributed water cooling schemes. By means of interface through the virtual fabrication technology (VFT®) software, the CTSP gives direct temperature results for FEA stress/distortion analysis.
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Liu, Cheng-Li, and Shiaw-Tsyr Uang. "Effects of Depth Perception Cues and Display Types on Presence in the Elderly within a 3D Virtual Store." In Applied Human Factors and Ergonomics Conference. AHFE International, 2019. http://dx.doi.org/10.54941/ahfe100221.
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Many of the increasing elderly population have problems performing daily tasks due to restricted mobility, inconvenience, and/or fear of crime. Computers at home with an Internet connection can provide this relatively immobile population with a new channel to access information and services, including the ability to shop. Virtual environments (VEs) technology applied in web shops is its ability to provide a 3D perspective to customers for more real sense on goods and shopping environment. A sense of presence is one of the critical components required by any effective VE. In contrast, when the quality of depth perception cues is poor, whether the cybersickness for the elderly will be easily caused to influence the feeling of presence and performance of goods-searching or not? An experiment addressed associations between presence and cybersickness, and performance of 3D virtual store in the elderly participation with autostereoscopic, stereoscopic and monocular display in good/poor depth perception cues. Results showed that the virtual store via autostereoscopic display with high quality depth perception cues will produce good sense and realism in stereopsis. However, if the depth perception cues are poor, don’t use 3D displays especially stereoscopic display; otherwise the elderly may lose the interest in 3D virtual store because of cybersickness being serious even more than monocular display.
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Diwakar, Philip, and Jonathan Berkoe. "Safety and Reliability Studies Using Analysis Tools." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37338.
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Computational Fluid Dynamics and Computational Structural Mechanics (also called Finite Element Analysis of FEA) and a combination of the two — Fluid Solid Interaction (FSI) — have long been used for safety of Personnel in Industry. This paper gives four examples of using these tools for designing equipment and mitigations to provide a safe and amenable working environment for personnel. The first example deals with the use of CFD to resize or relocate exhaust stacks — to prevent personnel working on an adjacent elevated platform being exposed to hot gasses or low oxygen levels — under high wind conditions or the presence of an inversion layer in the atmosphere. The second example is on construction of a retractable protective screen — for personal working on an elevated platform — in the event of a leak of combustive gas from an adjoining unit. CFD is used to determine the length and temperature of the flame while FEA is used to determine the impinging forces half way between the combustion source and the workers to select a suitable flexible retractable screen for protection. A third example is on cooling methane and ethane vapors heated during initial ship loading to prevent flaring caused by pressure build up. Flaring causes several environmental issues such as degradation of vegetation and trees, temperature effects on nearby occupied building, large luminescence, atmospheric disturbances and turbulence on passing aircraft, as well as loss of production. The stresses on the piping network, flanges, valves, pads and shoes — which may lift by Joule-Thompson effect caused temperature differentials — are studied using FEA to ensure the safe operation. A final example is on the use of CFD and FEA to determine the sources of flow-induced and cavitation-induced acoustic noise and vibration and water hammer produced by flow restrictions and flashing of liquid to vapor behind a vee-ball control valve and a ball control valve. The frequencies are extracted from CFD and checked against the natural frequencies from modal analysis and experimental bump test for typical resonant frequencies in the system. Mitigations are proposed to ensure lower noise levels and reduce vibrations in the system for the comfort of personnel working in the vicinity.
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Apps, Chris, Istemi Ozkan, Tania Rizwan, Marzie Derakhshesh, and Scott Medynski. "Large Scale Test Apparatus to Test External Leak Detection Technologies." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33579.
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When it comes to evaluating traditional computational leak detection technologies pipeline operators have a suite of simulated testing methods available. In the last several years however External Leak Detection Technologies have become more mature and potentially could provide operators with another layer of leak detection with more sensitivity than seen in traditional methods. The challenge with these technologies is in the evaluation of their sensitivity, reliability, and robustness. ENBRIDGE INC (Enbridge) and C-FER Technologies 1999 Inc. (C-FER) begun a comprehensive study to assess the state-of-the-art external, continuously distributed sensors for leak detection in early 2012. Initially, a technology review was undertaken to identify commercial, off-the-shelf technologies with the potential to detect small leaks of oil from buried pipelines. From this literature review, four technologies were identified; Distributed Temperature Sensing (DTS), Distributed Acoustic Sensing (DAS), Vapor Sensing Tubes (VST), and Hydrocarbon Sensing Cables (HSC). All four methods require proprietary materials and technology, which have had limited independent testing efforts to date. To evaluate these four leak detection methods and their vendors in an objective way, Enbridge and C-FER initiated the design and construction of a large-scale External Leak Detection Experimental Research apparatus (ELDER) that can accommodate a full-size segment of pipeline within a trench, at the same scale used in pipeline construction in North America. An instrumented pipe segment is buried in the trench with sensing cables laid alongside. The apparatus generates leaks with controlled variables including rate, pressure and temperature, and at various locations to accurately represent pipeline leaks. This paper summarizes the literature review on the four selected leak detection technologies that were identified as candidates for large-scale evaluation. The discussion will also include features of the ELDER apparatus, and re-engineered pipeline construction techniques that were required to accurately represent a full-scale pipeline trench within a laboratory environment.
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Natarajan, Valliyappan David, and Arif Ashraf Ayob. "Effect of Ovality on the Collapse Pressure of a Subsea Pipeline at High Outer Diameter-to-Wall Thickness Ratios." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50945.
Full textAbstract:
Subsea pipelines are primarily used in the transportation of oil and gas from the excavation site to the oil refinery. These pipelines are usually put under immense internal and external ambient pressures during their operation. The pipelines are therefore designed to account for the supported pressure and to ensure lower in-service failure probability. However, manufacturing issues arising from precision of machine tools and residual stresses in raw materials tend to cause the physical pipes to be geometrically imperfect. Imperfections including ovality (out-of-roundness), uneven wall thickness and longitudinal eccentricity (conical sections) may render the original design unsafe during the operation of the pipes. Experimental observations indicate that the collapse of pipeline pressure can be potentially overestimated if the geometrical imperfections are not considered in the design. Finite element analysis (FEA) that includes the geometrical imperfections in the pipeline model gives a better estimation of the collapse pressure. This study is aimed at modeling the ovality of a selected subsea pipeline and investigating its effect on the circumferential pressure distribution on the internal and external walls of the pipes using FEA. The collapse pressures of the pipeline are determined as a function of its outer diameter-to-thickness (D/t) ratios as well as the ovality. The type of ovality considered is full ring with 3%, 5% and 7% ovality. The FEA is performed using the Abaqus™ (ver. 6.12) software package and the collapse pressure for six D/t ratios between 30 and 80 (at a stepwise increase of 10) are determined based on the von Mises yield criterion of AISI 1009 carbon steel. Simulation results indicate that the collapse pressure reduces with the D/t ratio for all percentages of ovality. It is also observed that greater ovality gives smaller values of collapse pressure. For example, the collapse pressures of the pipe with D/t = 30 are 9.08 MPa, 8.64 MPa and 7.91 MPa for 3%, 5% and 7% ovality of the full ring type, respectively. The simulation results are compared against analytical results obtained using relevant formulas from two standards, i.e. BS 8010-3 and API 1111. The discrepancies between the simulation and API 1111 analytical results reduces for pipes with D/t = 60 and higher. The lowering of the collapse pressure would lead to unpredicted failure of pipelines if the effect of initial ovality in the pipe is not considered in the geometrical model for FEA. It is therefore imperative that ovality of pipes be kept to a minimum. Buckle arrestors may be placed on the pipe to limit the effect of ovality on the collapse pressure of the pipe.
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Liu, Yuqing, Philip Diwakar, Ismat El Jaouhari, and Dan Lin. "Evaluating and Mitigating Fatigue Risk of Choked Flow." In ASME 2022 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/pvp2022-84074.
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Abstract Uncontrolled manual operation of high energy vent lines could cause immediate fatigue failure at branch connections. Past failures have been attributed to high kinetic energy created due to choked flow at unprotected small-bore branch connections. In this paper, a risk-assessment method has been developed for choked flow in high energy systems. Computational Fluid Dynamics (CFD) tools were used to simulate formation and propagation of shock wave. A state-of-art method Fluid Structure Interaction (FSI) was used to investigate the dynamic pressure fluctuation in the piping system. Finite Element Analysis (FEA) was used to evaluate stresses and vibration responses at the toe of welds. This study found the fatigue risk of choked flow is caused by high-frequency shell-mode vibration. However, unlike the other high-frequency shell-mode vibration phenomenon (the acoustic-induced-vibration) which propagates in the piping system, the risks of choked flow are found to be only in the immediate vicinity of the choking point and decays exponentially with distance. A vibration velocity index defined in recent publications is used and modified to predict the vibration stress in various pipe sizes and branch fittings. Mitigation options are also discussed in this paper.
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Vorster, Willem J. J., Jonathan Roy, Daniel G. Gilroy, Jack A. Pollock, David M. Clarkson, Andrew J. Beveridge, and Alistair Strong. "Assessment of Safety Valve Escape Pipework." In ASME 2022 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/pvp2022-84858.
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Abstract This paper discusses fitness for purpose (FfP) structural integrity assessments of Safety Relief valve (SRV) vent pipes that were inadequately designed and maintained. The FfP assessments identified several latent errors with the pipework design. The absence of a fault schedule in combination with the latent errors led to a discernable anomaly in the safety case which was finally address but resulted in long outage delays and spiraling costs due to the large number of assessments, inspections and modifications required to achieve and demonstrate integrity. The FfP assessments discussed here consider all failure mechanisms which were identified as being relevant during steam discharge. These include plastic collapse, ratchetting, creep rupture and creep-fatigue and required a series of complex assessments to sentence the SRV pipes for return to service. The Computational Fluid Dynamics (CFD), pipe stress analysis and Finite Element Modeling (FEM) required to demonstrate integrity are discussed. The plant modification and repair solutions required to achieve integrity before the pipes could be returned to service are presented. The method used to apply CFD loads to pipe stress models without double accounting for static pressure stresses in the Finite Element Analyses (FEA), is describe here. Novel analysis techniques used to speed up assessments and the historic plant data reviews that were required to substantiate the claims on historic damage are reviewed.
Reports on the topic "Fear of Vet"
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Knapp, Carolyn. HIV and partner violence: What are the implications for voluntary counseling and testing? Population Council, 2001. http://dx.doi.org/10.31899/hiv2001.1011.
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Millions of women around the world face two great threats to their health and well-being: HIV/AIDS and violence by an intimate partner. One of the strongest associations between the two is the role that violence and the threat of violence play in limiting a woman’s ability to negotiate safer sex with a partner. A similar fear of violence also discourages women who receive HIV voluntary counseling and testing (VCT) from telling partners about test results. This study explored the links between HIV infection, serostatus disclosure, and partner violence among women attending a VCT clinic in Dar es Salaam, Tanzania. Researchers began with a qualitative research phase with VCT clients at the Muhimbili Health Information Center. In the second phase, researchers interviewed women who had been tested and counseled three months earlier. The details in this brief show that while there is considerable fear of a partner’s reaction, there is little evidence from HIV-positive or HIV-negative women surveyed that serostatus disclosure frequently leads to physical violence.
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Mascagni, Giulia, Roel Dom, and Fabrizio Santoro. The VAT in Practice: Equity, Enforcement and Complexity. Institute of Development Studies (IDS), January 2021. http://dx.doi.org/10.19088/ictd.2021.002.
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The value added tax (VAT) is supposed to be a tax on consumption that achieves greater economic efficiency than alternative indirect taxes. It is also meant to facilitate enforcement through the ‘self-enforcing mechanism’ – based on opposed incentives for buyers and sellers, and because of the paper trail it creates. Being a rather sophisticated tax, however, the VAT is complex to administer and costly to comply with, especially in lower-income countries. This paper takes a closer look at how the VAT system functions in practice in Rwanda. Using a mixed-methods approach, which combines qualitative information from focus group discussions with the analysis of administrative and survey data, we document and explain a number of surprising inconsistencies in the filing behaviour of VAT-remitting firms, which lead to suboptimal usage of electronic billing machines, as well as failure to claim legitimate VAT credits. The consequence of these inconsistencies is twofold. It makes it difficult for the Rwanda Revenue Authority to exploit its VAT data to the fullest, and leads to firms, particularly smaller ones, bearing a higher VAT burden than larger ones. There are several explanations for these inconsistencies. They appear to lie in a combination of taxpayer confusion, fear of audit, and constraints in administrative capacity.
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HIV and partner violence: Implications for HIV voluntary counseling and testing. Population Council, 2001. http://dx.doi.org/10.31899/hiv2001.1006.
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An important component of HIV voluntary counseling and testing (VCT) programs is encouraging clients to inform partners of their serostatus, yet many clients do not do so. Studies have found that a serious barrier to disclosure for women is fear of a violent reaction by male partners and that HIV-infected women are at increased risk for partner violence. Building on previous research, this study explored the links between HIV infection, serostatus disclosure, and partner violence among women attending the Muhimbili Health Information Center (MHIC), a VCT clinic in Dar es Salaam, Tanzania. As noted in this summary, the study first collected qualitative data from women, men, and couples (n=67) who were MHIC clients. In the second phase, researchers enrolled 340 women after pre-test counseling and prior to collection of test results, and 245 women were interviewed three months after enrollment and testing. Nearly a third of the sample were HIV-positive, almost half were married, and 50 percent were between the ages of 18 and 29 and had less than seven years of education. The study followed WHO ethical and safety protocols for conducting research on violence against women.