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Bibliografías temáticas / Closed tube

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Literatura académica sobre el tema "Closed tube"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 11 de febrero de 2022

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Artículos de revistas sobre el tema "Closed tube"

1

Sirianni, Nicky M., Huijun Yuan, John E. Rice, Ronit S. Kaufman, John Deng, Chandler Fulton y Lawrence J. Wangh. "Closed-Tube Barcoding". Genome 59, n.º 11 (noviembre de 2016): 1049–61. http://dx.doi.org/10.1139/gen-2016-0026.

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Here, we present a new approach for increasing the rate and lowering the cost of identifying, cataloging, and monitoring global biodiversity. These advances, which we call Closed-Tube Barcoding, are one application of a suite of proven PCR-based technologies invented in our laboratory. Closed-Tube Barcoding builds on and aims to enhance the profoundly important efforts of the International Barcode of Life initiative. Closed-Tube Barcoding promises to be particularly useful when large numbers of small or rare specimens need to be screened and characterized at an affordable price. This approach is also well suited for automation and for use in portable devices.

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2

Nasr, Mohamed M. "Closed-tube Thoracostomy". Surgical Laparoscopy, Endoscopy & Percutaneous Techniques 24, n.º 4 (agosto de 2014): 342–44. http://dx.doi.org/10.1097/sle.0000000000000028.

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Linley, F. H. "The Impact of Tube Plugging on Closed Feedwater Heater Operation and Maintenance". Journal of Pressure Vessel Technology 109, n.º 2 (1 de mayo de 1987): 212–18. http://dx.doi.org/10.1115/1.3264898.

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Failures of tubes in closed feedwater heaters are due to localized thermal, mechanical and chemical processes, in combination with the susceptibility of the tube material involved. Experience has demonstrated that changes in operating practice such as feedwater chemistry, frequency of exposure to atmosphere on shutdown and other factors often modify the environmental conditions and introduce unanticipated causes of tube failure. Good practice calls for immediate corrective action, whenever tubes fail, to arrest extension of the problem. Such corrective action is based on an accurate determination of the location of each failure with respect to the tube pass, position in the tube field and distance from the face of the tubesheet. Nondestructive examination and individual tube hydro test of adjacent and other suspect tubes for incipience of failure is required, including the examination of failure specimens, if they can be recovered. More than one failure mechanism may be in process in a heater and no problem potential should be treated casually. Analysis of tube plugging should consider the affect of each failure on heater performance and other equipment in the system, the probability of chronic, continuing failures and the ultimate number of tubes that can be plugged before plant capacity is curtailed. Once the tubes that should be plugged have been determined, plugging systems and installation techniques must also be addressed, with emphasis on preventing secondary damage from failed tubes and the avoidance of any failure caused by the plugs themselves.

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Rossing, Thomas. "Open and closed tube resonators". Physics Teacher 24, n.º 8 (noviembre de 1986): 459. http://dx.doi.org/10.1119/1.2342087.

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Kappert, Chuck. "Closed Tube with Varying Length". Physics Teacher 44, n.º 9 (diciembre de 2006): 566. http://dx.doi.org/10.1119/1.2396765.

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6

Hong, Yi-du, Bai-quan Lin y Chuan-jie Zhu. "Premixed methane/air gas deflagration simulations in closed-end and open-end tubes". International Journal of Spray and Combustion Dynamics 8, n.º 4 (22 de junio de 2016): 271–84. http://dx.doi.org/10.1177/1756827716648640.

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The overpressures, flame velocities and flow speeds were investigated in closed-end and open-end tubes via numerical simulations. Our results suggest that the tube geometry influences the evolution of these parameters. The peak overpressure initially decreased and eventually increased with the aspect ratio in both types of tubes. The flow speed initially increased and then decreased with the propagation distance in the closed-end tube, but it increased with increasing distance in the open-end tube. Empirical equations relating the peak overpressure and the peak flow speed are presented. The flame velocities in the open-end tubes were always greater than those in the closed-end tubes, especially the maximum flame velocity. The open end promoted flame acceleration, while the closed end resulted in near-wall deceleration. The results provide a reference for future limited-space gas explosion studies.

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7

Goldshtein, A., P. Vainshtein, M. Fichman y C. Gutfinger. "Resonance gas oscillations in closed tubes". Journal of Fluid Mechanics 322 (10 de septiembre de 1996): 147–63. http://dx.doi.org/10.1017/s0022112096002741.

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The problem of gas motion in a tube closed at one end and driven at the other by an oscillating poston is studied theoretically. When the piston vibrates with a finite amplitude at the first acoustic resonance frequency, periodic shock waves are generated, travelling back and forth in the tube. A perturbation method, based on a small Mach number. M and a global mass conservation condition, is employed to formulate a solution of the problem in the form of two standing waves separated by a jump (shock front). By expanding the equations of motion in a series of a small parameter ε = M½, all hydrodynamic properties are predicted with an accuracy to second-order terms, i.e. to ε2. It is found that the first-order solution coincides with the previous theories of Betchov (1958) and Chester (1964), while additional terms predict a non-homogeneous time-averaged pressure along the tube. This prediction compares favourably with experimental results from the literature. The importance of the phenomenon is discussed in relation to different transport processes in resonance tubes.

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8

Greschik, G. y K. C. Park. "The Deployment of Curved Closed Tubes". Journal of Mechanical Design 118, n.º 3 (1 de septiembre de 1996): 337–39. http://dx.doi.org/10.1115/1.2826889.

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A critical review of previous work on the unfurling of helically curved tubes (Greschik et al, 1994, 1996) is conducted, which leads to the proposition of a continuous and smooth deployment concept akin to the Collapsible Tube Mast (Aguirre, 1985) for curved tubes. This involves the collapse of the cross section and the subsequent roll-up of its halves one upon the other onto a storage drum. The concept’s applicability to closed tubes is investigated and a method for the alleviation of the deleterious membrane strains in the stowed state is proposed.

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9

Amano, R. S. "A Numerical Study of Turbulent Axisymmetric Jets Flowing Into Closed Tubes". Journal of Energy Resources Technology 108, n.º 4 (1 de diciembre de 1986): 286–91. http://dx.doi.org/10.1115/1.3231278.

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A numerical study is reported on the turbulent jet flowing into closed tubes. In the computation the finite volume method is employed to solve the continuity and momentum equations with the use of the second-order closure model of turbulence. The computations were made for tube depths and tube widths ranging from 2 to 30 jet diameters and from 2 to 8 jet diameters, respectively. The computed decay of the jet centerline velocity agrees reasonably well with the experimental data (within 10 percent). With the use of the second-order closure model, it became clear that an isotropic assumption is still valid in the main mixing region in the tube. Moreover, the wall shear stress distributions were obtained along the side wall of a tube. Finally, it was found that the terminal stagnation pressure at the tube bottom depends strongly on the diameter of the tube for DT/DN of less than 5.

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10

Gross, Roxann Diez, Jeanne Mahlmann y Judith P. Grayhack. "Physiologic Effects of Open and Closed Tracheostomy Tubes on the Pharyngeal Swallow". Annals of Otology, Rhinology & Laryngology 112, n.º 2 (febrero de 2003): 143–52. http://dx.doi.org/10.1177/000348940311200207.

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Studies linking aspiration and dysphagia to an open tracheostomy tube exemplify the possibility that the larynx may have an influence on oropharyngeal swallow function. Experiments addressing the effects of tracheostomy tube occlusion during the swallow have looked at the presence and severity of aspiration, but few have included measurements that capture the changes in swallowing physiology. Also, hypotheses for the importance of near-normal subglottic air pressure during the swallow have not been offered to date. As such, the aim of this study was to compare the depth of laryngeal penetration, bolus speed, and duration of pharyngeal muscle contraction during the swallow in individuals with tracheostomy tubes while their tubes were open and closed. The results of this series of experiments indicate that within the same tracheostomized patient, pharyngeal swallowing physiology is measurably different in the absence of subglottic air pressure (open tube) as compared to the closed tube condition.

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Tesis sobre el tema "Closed tube"

1

Garg, Rachit. "Experimental Investigation of a Closed Loop Impedance Pump with an Asymmetric Wall". University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron153325523527243.

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Rich, Bryan C. "An Experimental and Numerical Investigation of Closed-loop Impedance Pumping in Compliant, Elastic Tube Millistructures". University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460380059.

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3

Athenodorou, Andreas Apostolou. "Closed SU(N)Flux Tubes as Bosonic Strings". Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.534006.

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Rodrigues, Tiago Alexandre Morais. "Tubes reinforced with foams with density gradients". Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17994.

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Mestrado em Engenharia Mecânica
Estudos na área dos materiais têm desempenhado um importante papel na indústria automóvel. Com o tempo, a utilização de materiais pesados tem vindo a ser substítuido por materiais mais leves como ligas de aço avançados, ligas de alumínio e compósitos. Quanto mais leves forem as estruturas, melhor o seu desempenho em termos de consumo de combustível e emissão de gases. No entanto, as estruturas necessitam de manter a sua integridade, assegurando a segurança activa e passiva dos ocupantes. Sendo assim, este estudo concentra-se em estudar o comportamento mecânico à compressão de tubos de alumínio preenchidos com espumas de alumínio. As espumas fechadas são produzidas através do método de pulverotecnologia ao passo que as espumas abertas são fabricadas com recurso à técnica de fundição de precisão. Este estudo passa também pela análise de espumas abertas preenchidas com polímeros, neste caso silicone e epóxido, comummente chamadas espumas híbridas. Os testes de compressão foram realizados em condições quasi-estáticas e dinâmicas, sendo analisados com recurso a uma técnica não destrutiva (Termografia Infravermelha), na qual se obtêm imagens térmicas (termogramas), utilizados no estudo dos modos de deformação. A análise dos resultados passa não só pelo estudo dos modos de deformação mas também da sua influência na capacidade de absorção de energia, mas também na ocurrência de fendas e fracturas. Os resultados demonstram que os tubos preenchidos com espumas de alumínio de porosidade fechada durante a etapa de formação da própria espuma, designados in-situ, são aqueles que garantem melhor resposta mecânica, tendo um comportamento mais estável e prevísivel.
Research in materials has been playing and important role in automotive industry. With time, the use of heavier material is being replaced by lighter materials such as advanced steel alloys, aluminium alloys and composites. The lighter the structures the better in terms of fuel consumptions and gas emission’s reduction. However, these structures have to maintain their reliability, ensuring active and passive security to vehicles passengers. Therefore, this study concentrates on studying the mechanical behaviour of aluminium tubes filled with aluminium foams under compression. The closed foams are produced through a powder metallurgical method, while the open-cell foams are produced through investment casting. This study also focuses on the study of open-cell foams embedded with polymers, silicone and epoxy, commonly called ’Hybrid Foams’. Compression tests are made under quasi-static and dynamic conditions, and analysed with non-destructive technique (Infrared Thermography), which allows to obtain thermal images (thermogrames), used to study the deformation modes. The analyses of the results passes not only through the study of the deformation modes but also focuses on its influence in energy absorption capability, as well as in the occurrence of cracks and fractures. The results show that foam filled tubes with closed-cell, expanded inside the tube itself ( designated as in-situ), ensures a better mechanical response, due to its more stable and predictable behaviour.

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5

Chauvin, Alice. "Etude expérimentale de l'atténuation d'une onde de choc par un nuage de gouttes et validation numérique". Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4732/document.

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L'interaction entre une onde de choc plane et un nuage de gouttes d'eau homogène, monodisperse est étudiée dans un tube à choc. Les influences de la fraction volumique d'eau, αd(1 %, 0.3 % et 0.1%), rapport du volume d'eau sur le volume du nuage, de la hauteur du nuage Hd (70 cm, 40 cm et 15 cm), du diamètre des gouttes φd (250 µm et 500 µm ) et du nombre de Mach M (1.3 et 1.5) sont étudiées pour des fractions volumiques inférieures au pour cent. Lors de cette interaction, la pression en paroi du tube à choc est mesurée et la visualisation du nuage est obtenue par une méthode ombroscopique directe. Une évolution temporelle caractéristique de la pression induite par la propagation d'une onde de choc dans un tel milieu, est mise en évidence. Cette allure, diffère significativement de celle obtenue avec un nuage constitué de particules solides: la fragmentation des gouttes en est responsable. Une zone où la pression diminue directement après le pic de pression est alors observée aux stations de mesure localisées dans le nuage. L'atténuation de la surpression est mise en évidence: elle peut atteindre 80% du pic de pression mesuré sans nuage. Dans la partie numérique de ce travail, deux modèles de fragmentation sont implémentés, comparés et validés dans un code de calcul monodimensionel, instationnaire, Eulérien appliqué aux écoulements dilués (αd<1 %). On montre que la formulation du taux de production des gouttes selon le taux d'accroissement soit de leur nombre, soit de leur diamètre doit être utilisée respectivement soit avec, soit sans la prise en compte l'étape de déformation de la fragmentation
The interaction between a planar shock wave and an both homogeneous and monodispersed droplet water cloud is studied in a shock tube. The effects of the water volume fraction αd (1% %, 0.3 % et 0.1%), ratio between the volume of water and the volume of the cloud, the height of the two-phase medium Hd (70 cm, 40 cm et 15 cm), the droplets diameters φd (250 µm et 500 µm ) and the Mach number M (1.3 et 1.5) are studied for a volume fraction smaller than one per cent. During this interaction, the pressure is measured and the visualization of the cloud is obtained by direct shadowgraphy. A characteristic temporal evolution of the pressure induced by the propagation of the shock wave in such a mixture is highlighted. This behavior differs significatively from the one obtained with a solid particles cloud : the droplet atomization is responsible of this change. A zone where the pressure decreases directly after the pressure peak is observed at different stations located into the water cloud. The mitiagtion of the overpressure is shown: it can reach 80%of the pressure peak measured without cloud. In the numerical part, two fragmentation models are added, compared and validated in a comptutational, one dimensional, instationnary, Eulerien code in the case of dilute flows (αd<1 %). We show that the formulation of the production rate of droplets defined by the number of droplets growth, or the diameter droplet growth, must be used, respectively, with and without taking into account the deformation stage of the droplet breakup. Thus, the numerical results are in good agrement with those obtained experimentally

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6

Nejedlý, Petr. "Lineární jednotka s elektrickým pohonem pro robot s paralelní kinematickou strukturou". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229904.

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Design of linear actuator for parallel kinematic structure is described in this master´s thesis. The parallel kinematic structure is described in the first part. Open kinematics structure and close kinematics structure are compared. Their benefits and disadvantages are also mentioned. Construction of some parallel robots is illustrated. Linear actuators of different company are described. Mechanical parameters and construction of linear actuator are compared. Design of linear actuator is described in practical part of master´s thesis. A few variation of linear actuator are introduced. Individual variants are evaluated by Multicriteria Decisional Analysis and a final conception is selected. Final conception of linear actuator is elaborated. Reasons for selection of every part of linear actuator are given and basic mechanical calculation design part is made. FEA analysis of the structural part of linear actuator is made. Design of linear actuator is evaluated in the final part.

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7

Tunková, Martina. "Městské lázně". Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2010. http://www.nusl.cz/ntk/nusl-215713.

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LIN, WEN-XING y 林文幸. "Heat transfer in a two-phase closed tube thermophon". Thesis, 1991. http://ndltd.ncl.edu.tw/handle/73532997675551906995.

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WEN, Min-Chieh y 溫敏捷. "The Research of Premixed Flame Propagation In a Closed Tube". Thesis, 1997. http://ndltd.ncl.edu.tw/handle/43471215967994827732.

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碩士
國立臺灣大學
機械工程學系
85
In this study, we employ the numerical method to study the propagationbehavior of a premixed laminar flame in a closed circular tube. Anaxisymmetric flow is considered, and a one-step overall reaction with reactionrate governed by Arrhenius law is used to study the effects on the flamepropagation of the thickness of the initial hot spot, the gravity, and theboundary conditions. The numerical results show that a tulip-shaped flame, a mushroom-shapedflame or a flame with a shape between them will exist in the small closedcircular tube, depending on the given conditions. The results indicate that one of the factors controlling the flame shapeis the flow field of the mixture induced by the flame.

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10

Jou, Luo Feng y 羅豊州. "Effects of Flow Stretch on Premixed-Flame Propagation in Closed Tube". Thesis, 1995. http://ndltd.ncl.edu.tw/handle/30504991709454040912.

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碩士
大葉大學
機械工程研究所
83
Here a hydrodynamic model was proposed for flame propagation in close tube effected by flow stretch. The flame is treated as a surface of discontinuity like in previous work. For the structure governing flame burning rate, large activation energy and large heat release assumptions are used in the model. It is well known that for laminar premixed flames with Lewis number smaller then one propagating in open space, the burning rate will increase when it is subjected to positive flow stretch and the reverse is true for negative flow stretch. And for flame with Lewis number bigger then one the trend is just the opposite. For flames propagating in open space the pressure is constant , while in present study the overall pressure is rising with the flame propagation . Present theoretical results suggest for flames propagating in closed tube the effect of flow stretch to the flame is the same as that in open space. That is for flame in closed tube positive flow stretch will increase the mass burning rate for flames with Lewis number smaller then one, and for flames with Lewis number bigger then one the mass burning rate will decrease. The trend will reverse for flames experiencing negative flow stretch.

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Libros sobre el tema "Closed tube"

1

Understanding close-up photography: Creative close encounters with or without a macro Lens. New York: Amphoto Books, 2009.

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2

Tibbitts, T. W. Space experiment on tuber development & starch accumulation for CELSS: Final report, NAGW-4022. [Washington, DC: National Aeronautics and Space Administration, 1997.

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3

Indian Institute of Management, Ahmedabad., ed. Performance of greehouse coupled to earth-tube-heath [i.e. heat]-exchanger in closed-loop mode. Ahmedabad: Indian Institute of Management, 2004.

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4

Parker, Philip M. The 2007-2012 World Outlook for Fabricated Bare Tube Industrial Closed Heat Exchangers Excluding for Nuclear Applications. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Fabricated Fin Tube Industrial Closed Heat Exchangers Excluding for Nuclear Applications. Icon Group International, Inc., 2005.

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6

The 2006-2011 World Outlook for Fabricated Bare Tube Industrial Closed Heat Exchangers Excluding for Nuclear Applications. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for Fabricated Fin Tube Industrial Closed Heat Exchangers Excluding for Nuclear Applications. ICON Group International, Inc., 2006.

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8

Kinsman, Stephen L. Spina Bifida and Related Conditions. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199937837.003.0077.

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The term “spinal dysraphism” encompasses the broadest array of the conditions known as the neural tube defects. The open neural tube defects (spina bifida aperta and cystica) include both disorders of primary and/or secondary neuralation and are best defined as myelomeningocele complex (MMC) due to their protean nervous system manifestations beyond the spinal lesion. Closed spinal dysraphisms (so-called spina bifida occulta) include lipomatous lesions, forms of tethered spinal cord, sinus tracts, and forms of split spinal cord (diastematomyelia). Both genetic and environmental etiologies have been identified. Gene-environment and gene-gene interactions are also important in the pathobiology of these conditions.

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Hoang, Jimmy y Samuel David Yanofsky. Neural Tube Defects. Editado por Kirk Lalwani, Ira Todd Cohen, Ellen Y. Choi y Vidya T. Raman. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190685157.003.0025.

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Neural tube defects (NTDs) are congenital abnormalities that arise from the neural tube failing to close. These defects can affect the brain, spine, or spinal cord and generally happen within the first month of pregnancy. Cranial dysraphism is failure of cranial neural tube closure and includes anencephaly and encephalocele. Spinal dysraphism is failure of caudal neuropore closure and includes spina bifida cystica and occulta. Myelomeningocele is a type of spina bifida cystica where the membranous sac containing neural tissue protrudes through an opening in the back. It is the most common NTD and considered a surgical emergency due to the increased risk for infection, further neurologic damage, and dehydration. Advancements in medicine have allowed for the possibility of early diagnosis and even in utero surgical intervention. This chapter focuses more exclusively on the approach and management of myelomeningocele.

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Mason, Peggy. Developmental Overview of Central Neuroanatomy. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190237493.003.0003.

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The central nervous system develops from a proliferating tube of cells and retains a tubular organization in the adult spinal cord and brain, including the forebrain. Failure of the neural tube to close at the front is lethal, whereas failure to close the tube at the back end produces spina bifida, a serious neural tube defect. Swellings in the neural tube develop into the hindbrain, midbrain, diencephalon, and telencephalon. The diencephalon sends an outpouching out of the cranium to form the retina, providing an accessible window onto the brain. The dorsal telencephalon forms the cerebral cortex, which in humans is enormously expanded by growth in every direction. Running through the embryonic neural tube is an internal lumen that becomes the cerebrospinal fluid–containing ventricular system. The effects of damage to the spinal cord and forebrain are compared with respect to impact on self and potential for improvement.

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Capítulos de libros sobre el tema "Closed tube"

1

Clermont, Jean-Robert y Amine Ammar. "Stream-Tube Method Domain Decomposition Closed Streamlines". En Stream-Tube Method, 173–200. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65470-2_6.

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Gupta, Sachin, James M. LeBlanc y Arun Shukla. "Implosion of a Tube Within a Closed Tube: Experiments and Computational Simulations". En Dynamic Behavior of Materials, Volume 1, 327–31. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00771-7_40.

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Olmos, Antonio, Olga Esteban, Edson Bertolini y Mariano Cambra. "Nested RT-PCR in a Single Closed Tube". En PCR Protocols, 151–59. Totowa, NJ: Humana Press, 2003. http://dx.doi.org/10.1007/978-1-4612-0055-0_26.

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Candiloro, Ida L. M., Thomas Mikeska y Alexander Dobrovic. "Closed-Tube PCR Methods for Locus-Specific DNA Methylation Analysis". En Methods in Molecular Biology, 55–71. Totowa, NJ: Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-316-5_5.

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Gammoh, Nour Zahi y Lothar Rink. "Closed-Tube Multiplex Real-Time PCR for the Detection of Group A Streptococcal Superantigens". En Methods in Molecular Biology, 17–23. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0467-0_2.

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Webster, Robet J., John P. Swensen, Joseph M. Romano y Noah J. Cowan. "Closed-Form Differential Kinematics for Concentric-Tube Continuum Robots with Application to Visual Servoing". En Experimental Robotics, 485–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00196-3_56.

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Bulteel, O., P. Dupuis, S. Jeumont, L. M. Irenge, J. Ambroise, B. Macq, J. L. Gala y D. Flandre. "Low-cost miniaturized UV photosensor for direct measurement of DNA concentration within a closed tube container". En IFMBE Proceedings, 1057–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89208-3_252.

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Trangoni, Marcos D., Andrea K. Gioffré y Silvio L. Cravero. "A Closed-tube Loop-Mediated Isothermal Amplification Assay for the Visual Endpoint Detection of Brucella spp. and Mycobacterium avium subsp. paratuberculosis". En Methods in Molecular Biology, 221–29. New York, NY: Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-7037-7_14.

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Buxmann, J. "Pressure Losses in Tube Bundles of Close Spacings". En Design and Operation of Heat Exchangers, 174–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84450-8_16.

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Chen, S. T., D. P. Hu, Z. Z. Chen, C. Zhu, R. J. Liu y Y. Q. Dai. "Propagation and Reflection of Gas Waves in a Close Tube". En New Trends in Fluid Mechanics Research, 280. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75995-9_82.

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Actas de conferencias sobre el tema "Closed tube"

1

Lueck, Dale E. "Closed end launch tube (CELT)". En Space technology and applications international forum - 2001. AIP, 2001. http://dx.doi.org/10.1063/1.1357990.

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Lueck, Dale E. "Closed End Launch Tube (CELT)". En SPACE TECHNOLOGY AND APPLICATIONS INTERNAT.FORUM-STAIF 2004: Conf.on Thermophys.in Microgravity; Commercial/Civil Next Gen.Space Transp.; 21st Symp.Space Nuclear Power & Propulsion; Human Space Explor.; Space Colonization; New Frontiers & Future Concepts. AIP, 2004. http://dx.doi.org/10.1063/1.1649574.

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Tennankore, K. N. y J. F. Lafortune. "FLAME PROPAGATION IN A CLOSED TUBE". En International Heat Transfer Conference 8. Connecticut: Begellhouse, 1986. http://dx.doi.org/10.1615/ihtc8.4320.

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Mead, B., S. Ruiz y W. Yim. "Closed-loop control of a tube-type cylindrical IPMC". En SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, editado por Yoseph Bar-Cohen. SPIE, 2013. http://dx.doi.org/10.1117/12.2009395.

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Zhu, Shijia, Zhongxian Hao, Quanbin Wang y Lixin Zhang. "Closed Loop Speed Control System of ESPCP with Capillary Tube". En SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. Society of Petroleum Engineers, 2017. http://dx.doi.org/10.2118/186261-ms.

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Kuzuu, Kazuto, Katsuya Ishii y Kunio Kuwahara. "Numerical simulation of premixed flame propagation in a closed tube". En 30th Thermophysics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-2012.

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Kerampran, S., D. Desbordes, B. Veyssiere y Lux Bauwens. "Flame propagation in a tube from closed to open end". En 39th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-1082.

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Neugebauer, Reimund, Frank Schieck y Markus Werner. "Tube Press Hardening for Lightweight Design". En ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50151.

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Resumen

Press hardening is an innovative technology being applied to meet the growing demands for both lightweight and crash performance qualities. To further increase the lightweight potential, closed profiles are being used. As a result, a method has been developed at the Fraunhofer Institute for Machine Tools and Forming Technology IWU which allows the integration of press hardening of tubes and closed profiles into the media-based forming process. Using this press hardening technology, the original material strength of 500 MPa can be increased to between 1200 and 1900 MPa, depending on the chosen material. The engineering of tube press hardening is more complex than other forming processes, specifically the time dependence in combination with heat management makes it difficult. Therefore the use of FEA is indispensible when dealing with aspects such as heat treatment, the forming process itself, the cooling caused by the gaseous forming media and the general heat management of the tooling. To control and improve the process and therefore the part quality and process reliability, all these factors and their dependencies have to be taken into account. In addition to 22MnB5, other manganese-boron alloyed steels and different heating strategies have been tested. Based on these experiments the process capability was successfully proven and technological limits were obtained. Current investigations are focused on realizing tailored properties thus creating areas with varied strength and ductility in a single part.

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Jacob, Eric, Gary Flandro y Daniel Banuti. "Forced Resonant Shock Waves and Mean Pressure Shift in a Closed Tube". En 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2007. http://dx.doi.org/10.2514/6.2007-5806.

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Muldoon, Thomas J. y Joseph A. Bruno. "Closed Cooling Water Heat Exchanger Design for Higher Tube Inlet Water Temperature". En ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98284.

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When the maximum temperature of cooling water slowly increases with temperature changes and shifting climate patterns, smaller LMTD’s (log mean temperature differences) for the CCW’s to meet the same performance heat rejection. Making the issue more critical is that the peak cooling water temperatures will usually occur at the same time as peak summer load demand. A smaller LMTD means a larger heat exchanger and more effective tubing surface area. More surface, means more tubing or smaller diameter tubing. If the original LMTD was 12 °F, a 1 degree change may mean an increase of 9%. To maintain the same nozzle locations on a replacement exchanger means a smaller tube outside diameter and/or a larger shell. Such increases are necessary for the high summer load conditions with the highest inlet water temperatures. At lower water temperatures, the amount of excess thermal capability can become a performance and corrosion issue as the water flows are modulated to meet temperatures. To help reduce these problems, a design which allows operation with reduced surface at low temperatures is appropriate. The temperature approach (Cooling Water Out – Service Water In) based on the higher inlet cooling water temperature can be significantly smaller than when the CCW was originally designed. This paper will address a design configuration that will work with both higher summer temperature cooling water with the flexibility of using less water for cooler winter operation. The overall affect is less pumping power during colder months, more consistent tube velocities which will help with heat transfer, and minimization of sediment settling in the tubes due to lower velocities.

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Informes sobre el tema "Closed tube"

1

Ohnuma, S. Tune shifts caused by horizontal closed orbit deviations in sextupoles. Office of Scientific and Technical Information (OSTI), febrero de 1988. http://dx.doi.org/10.2172/377696.

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Heifets, Samuel A. Study of Coherent Tune Shift Caused by Electron Cloud in Positron Storage Rings. Office of Scientific and Technical Information (OSTI), diciembre de 2001. http://dx.doi.org/10.2172/798936.

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