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Thematische Bibliographien / Double tube / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Double tube“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 25. April 2022

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1

Yang, Lian, Yong Hong Huang, and Liu Zhang. "Study on Engineering Construction with Three-Dimensional Heat Transfer Modeling for Double U-Tube Heat Exchangers in Ground-Source Heat Pump Systems." Advanced Materials Research 700 (May 2013): 231–34. http://dx.doi.org/10.4028/www.scientific.net/amr.700.231.

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There are many ground source heat pumps in engineering construction application. However, Research on heat exchanger models of single-hole buried vertical ground source heat pump mostly focuses on single U-tube ground heat exchangers other than double U-tube ones in China currently. Compared with single U-tubes, double U-tubes have the heat transfer particularity of asymmetry. Therefore, the use of the traditional single tube models would have large error in the simulation of the actual double U-tube heat exchangers. This paper frames a three-dimensional heat transfer model for the vertical si

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Hartman, William R., Michael Brown, and James Hannon. "Iatrogenic Left Main Bronchus Injury following Atraumatic Double Lumen Endotracheal Tube Placement." Case Reports in Anesthesiology 2013 (2013): 1–3. http://dx.doi.org/10.1155/2013/524348.

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Tracheobronchial disruption is an uncommon but severe complication of double lumen endotracheal tube placement. The physical properties of a double lumen tube (large external diameter and length) make tracheobronchial injury more common than that associated with smaller single lumen endotracheal tubes. Here we present the case of an iatrogenic left main bronchus injury caused by placement of a double lumen tube in an otherwise unremarkable airway.

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Russell, W. J., and T. S. Strong. "Dimensions of Double-Lumen Tracheobronchial Tubes." Anaesthesia and Intensive Care 31, no. 1 (2003): 50–53. http://dx.doi.org/10.1177/0310057x0303100109.

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The diameter of the left main bronchus is the determining dimension when selecting the size of a left tracheobronchial (double-lumen) tube for lung separation. However, this information is not given by any manufacturer, either on the tube or in the package insert. This paper describes the lengths and diameters of the deflated bronchial cuff segment of left tracheobronchial tubes in common use. One hundred and seventy-one left tracheobronchial tubes ranging in size from 28 to 41 nominal French gauge from four manufacturers were measured. There was wide variation between tubes of the same nomina

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Hegland, Niels, Sebastian Schnitzler, Jan Ellensohn, Marc P. Steurer, Markus Weiss, and Alexander Dullenkopf. "Dimensional Variations of Left-Sided Double-Lumen Endobronchial Tubes." Anesthesiology Research and Practice 2019 (September 24, 2019): 1–9. http://dx.doi.org/10.1155/2019/3634202.

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Background. Tube size selection is critical in ventilating patients’ lungs using double-lumen endobronchial tubes (DLTs). Little information about relevant parameters is readily available from manufacturers. The aim of this study is to provide reference data for relevant dimensions of conventionally available DLTs. Methods. In this study in a benchmark in vitro setup, several dimensional parameters of four sizes of left-sided double-lumen endobronchial tubes from six different manufacturers were assessed, such as distances and diameters of tube shaft, cuff lengths, and diameters as well the an

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5

Zhang, Bing, Jun-Liang Zhao, Tao Huang, Ning-Yuan Zhang, Yi-Jie Zhang, and Xia-Min Hu. "Effect of fiber angles on hybrid fiber-reinforced polymer–concrete–steel double-skin tubular columns under monotonic axial compression." Advances in Structural Engineering 23, no. 7 (2020): 1487–504. http://dx.doi.org/10.1177/1369433219895916.

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Hybrid fiber-reinforced polymer–concrete–steel double-skin tubular columns are a novel form of hollow columns that combine two traditional construction materials (i.e. concrete and steel) with fiber-reinforced polymer composites. Hybrid fiber-reinforced polymer–concrete–steel double-skin tubular columns consist of an inner tube made of steel, an outer tube made of fiber-reinforced polymer, and a concrete layer between the two tubes. Existing studies, however, are focused on hybrid fiber-reinforced polymer–concrete–steel double-skin tubular columns with fibers of the fiber-reinforced polymer tu

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Zhong, T., W. Wang, J. Chen, L. Ran, and D. A. Story. "Sore Throat or Hoarse Voice with Bronchial Blockers or Double-Lumen Tubes for Lung Isolation: A Randomised, Prospective Trial." Anaesthesia and Intensive Care 36, no. 6 (2008): 441–46. http://dx.doi.org/10.1177/0310057x0803600601.

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Double-lumen endotracheal tubes and bronchial blockers allow lung isolation for one-lung ventilation. Few studies, however, directly compare these devices. Further, a new endobronchial blocker (Coopdech) is available in some countries. Our primary hypothesis was that bronchial blockers would be associated with less sore throat or hoarse voice than double-lumen tubes. Secondary outcomes were successful one-lung ventilation and surgical access. In this prospective trial, 120 Chinese patients undergoing elective surgery were randomly assigned to one of four groups of 30 patients: Coopdech blocker

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7

Jeon, Y., H. G. Ryu, J. H. Bahk, C. W. Jung, and J. M. Goo. "A New Technique to Determine the Size of Double-lumen Endobronchial Tubes by the Two Perpendicularly Measured Bronchial Diameters." Anaesthesia and Intensive Care 33, no. 1 (2005): 59–63. http://dx.doi.org/10.1177/0310057x0503300109.

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The cross-section of the mainstem bronchi is not completely round. For preoperative selection of a double-lumen endobronchial tube size, it may be necessary to measure the mediolateral and the anteroposterior bronchial diameters, which can be measured respectively on chest radiograph and computed tomography. With Internal Review Board approval and patients’ informed consent, 105 elective thoracic surgical patients who needed left-sided double-lumen tubes were enrolled. Double-lumen tube size was selected depending on the arithmetic mean of the mediolateral and anteroposterior bronchial diamete

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8

Abdul Razzaq, Ali K., and Khudheyer S. Mushatet. "A Numerical Study for a Double Twisted Tube Heat Exchanger." International Journal of Heat and Technology 39, no. 5 (2021): 1583–89. http://dx.doi.org/10.18280/ijht.390521.

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The thermal and fluid physiognomies of a double twisted tube heat exchanger was examined numerically. Twisted engineering is a wide-use method to improve heat transfer in heat exchangers. A counter-flow mode utilizing hot water in the inner tube and cold air in the outer tube was considered. This study aims to progress the thermal performance of the double tube heat exchanger by using twisted tubes instead of plane tubes. The heat exchanger was (1m) length, outer diameter (0.05m) and inner diameter (0.025m), both with a thickness (0.004m). It was tested for different values of twist ratios (Tr

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Jaggar, Siân, Ali Mofeez, and Elizabeth Haxby. "Double-lumen tube audit." Journal of Cardiothoracic and Vascular Anesthesia 16, no. 6 (2002): 790–91. http://dx.doi.org/10.1016/s1053-0770(02)70004-9.

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10

Lohser, Jens, and Jay B. Brodsky. "Silbronco Double-Lumen Tube." Journal of Cardiothoracic and Vascular Anesthesia 20, no. 1 (2006): 129–31. http://dx.doi.org/10.1053/j.jvca.2005.03.035.

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11

Javed, Muhammmad Faisal, Haris Rafiq, Mohsin Ali Khan, Fahid Aslam, Muhammad Ali Musarat, and Nikolai Ivanovich Vatin. "Axial Behavior of Concrete-Filled Double-Skin Tubular Stub Columns Incorporating PVC Pipes." Crystals 11, no. 12 (2021): 1434. http://dx.doi.org/10.3390/cryst11121434.

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This experimental study presents concrete-filled double-skin tubular columns and demonstrates their expected advantages. These columns consist of an outer steel tube, an inner steel tube, and concrete sandwiched between two tubes. The influence of the outer-to-inner tube dimension ratio, outer tube to thickness ratio, and type of inner tube material (steel, PVC pipe) on the ultimate axial capacity of concrete-filled double-skin tubular columns is studied. It is found that the yield strength of the inner tube does not significantly affect the ultimate axial capacity of concrete-filled double-sk

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Park, H. P., J. H. Bahk, J. H. Park, and Y. S. Oh. "Use of a Fogarty Catheter as a Bronchial Blocker through a Single-lumen Endotracheal Tube in Patients with Subglottic Stenosis." Anaesthesia and Intensive Care 31, no. 2 (2003): 214–16. http://dx.doi.org/10.1177/0310057x0303100215.

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One-lung ventilation can be achieved with a double-lumen tube or a bronchial blocker. However, the larger outer diameters of double-lumen or Univent tubes may prevent their passage through an area of subglottic stenosiss. We present five cases of subglottic stenosis in which a Fogarty catheter was used as a bronchial blocker through a single-lumen endotracheal tube. The outer diameters of a double-lumen tube, Univent tube and single-lumen tube were compared. Despite special equipment designed for one-lung ventilation, the use of a bronchial blocker through a single-lumen tube, which has the th

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Dhiwakar, M., G. I. Nambi, T. V. Ramanikanth, S. M. Kale, and M. N. Sivakumar. "Single cannula versus double cannula tracheostomy tubes in major oral and oropharyngeal resections." Journal of Laryngology & Otology 130, no. 4 (2015): 388–92. http://dx.doi.org/10.1017/s0022215115003412.

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AbstractObjective:To compare the outcomes of two types of tracheostomy tubes used in major head and neck surgery.Methods:A retrospective study was conducted of prospectively collected data. The post-operative safety and adequacy of a single cannula tracheostomy tube was compared to a double cannula tracheostomy tube in patients undergoing tracheostomy during major oral and oropharyngeal resections.Results:Out of 46 patients with the single cannula tube, 7 (15 per cent) experienced significant obstruction warranting immediate tube removal, while another 9 (20 per cent) needed a change of tube o

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Eldawlatly, Abdelazeem A., Mohamed R. El Tahan, Naveed U. Kanchi, Ahmad Al Qatari, and Abdulaziz E. Ahmad. "Efficacy of height-based formula to predict insertion depth of left-sided double lumen tube: A prospective observational study." Anaesthesia and Intensive Care 48, no. 5 (2020): 354–57. http://dx.doi.org/10.1177/0310057x20946051.

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The insertion depth of the left-sided double-lumen tube needs careful positioning and bronchoscopic confirmation. Several formulae based on body height have been used for estimating the optimal insertion depth of a left-sided double-lumen tube. We conducted this prospective study to test the hypothesis that our earlier developed height-based formula (0.25 × body height0.916) could predict the accurate insertion depth of a left-sided double-lumen tube. After obtaining ethical approval, 66 patients who underwent thoracic surgery were included. A left-sided double-lumen tube was advanced blindly

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15

Brodsky, J. B., A. Macario, W. B. Cannon, and J. B. D. Mark. "“Blind” Placement of Plastic Left Double-Lumen Tubes." Anaesthesia and Intensive Care 23, no. 5 (1995): 583–86. http://dx.doi.org/10.1177/0310057x9502300509.

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A prospective analysis of placement of left-sided plastic double-lumen tubes in 100 patients is presented. Intubation of the left bronchus was successfully accomplished using only auscultation and clinical signs (“blind” placement) in 91 patients. Double-lumen tubes were positioned in less than five minutes in 84 patients. The most common problem encountered (30%) was initial intubation of the right main bronchus. Seven of these patients required bronchoscopic assistance to guide the tube into the left bronchus. There were four minor intraoperative complications due to DLT malposition that wer

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AHMED, SHAFAQ, M. Tariq, SARFRAZ JANJUA, Hasan Raza, and M. ISHAQ. "DOUBLE LUMEN INTUBATION." Professional Medical Journal 16, no. 01 (2009): 105–8. http://dx.doi.org/10.29309/tpmj/2009.16.01.2991.

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Introduction: Auscultation is well established and most commonly used method for checking of correct placement ofDouble Lumen Tube(DLT). Now with widespread availability of fibre optic bronchoscope, confirmation of DLT placement by fibre opticbronchoscope is recommended by many and considered mandatory by some anaesthetist. Objective: To discuss method of insertion andreliability of auscultatory method to confirm correct placement of double lumen tubes. S t u d y d e s i g n : Observational. Place a n d d u r a t i o n:Combined Military Hospital Rawalpindi from 16th Nov 2003 to 13th July 2007.

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Pfeiffer, R., F. Simon, H. Kuzmany, V. N. Popov, V. Zólyomi, and J. Kürti. "Tube–tube interaction in double-wall carbon nanotubes." physica status solidi (b) 243, no. 13 (2006): 3268–72. http://dx.doi.org/10.1002/pssb.200669176.

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18

Chen, Tsung Chia, and Jiun Ming Ye. "Finite-Element Analysis of the Double Lateral Compression of Clad Tube into a Symmetric Square-Tube." Advanced Materials Research 337 (September 2011): 332–35. http://dx.doi.org/10.4028/www.scientific.net/amr.337.332.

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The squaring process to shape a circular tube into a symmetric square clad tube is examined by a three-dimensional incremental elastic-plastic finite-element method based on an updated Lagrangian formulation. The effects of various parameters, such as geometric ratio R/t, strain hardening exponent n, friction coefficient μ, and the length of tube L, on the occurrence of collapse in the squaring process are discussed and interpreted in a theoretical manner. The findings show that geometric ratio is the major factor in the process of squaring circular tubes. When R/t=25, serious collapse is like

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Navickaitė, Kristina, Michael Penzel, Christian R. H. Bahl, and Kurt Engelbrecht. "Performance Assessment of Double Corrugated Tubes in a Tube-In-Shell Heat Exchanger." Energies 14, no. 5 (2021): 1343. http://dx.doi.org/10.3390/en14051343.

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In this article, the performance of double corrugated tubes applied in a tube-in-shell heat exchanger is analysed and compared to the performance of a heat exchanger equipped with straight tubes. The CFD (computational fluid dynamics) analysis was performed considering a turbulent flow regime at several mass flow rates. It is observed that the double corrugated geometry does not have a significant impact on the pressure drop inside the analysed heat exchanger, while it has the potential to increase its thermal performance by up to 25%. The ε–NTU (effectiveness–number of transfer units) relatio

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RANJBARTOREH, ALI REZA, and GUOXIU WANG. "BENDING STABILITY OF INNER AND OUTER TUBES OF DOUBLE-WALLED CARBON NANOTUBE." International Journal of Nanoscience 08, no. 01n02 (2009): 9–13. http://dx.doi.org/10.1142/s0219581x0900558x.

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This paper considers the effects of bending moment on the structure of double-walled carbon nanotube (DWCNT). Two types of DWCNTs with almost the same aspect ratio (length/radius) are selected; also continuum modeling is utilized to study the bending stability of inner and outer tubes. As a result of the van der Waals interaction between adjacent tubes the critical bending moment of inner tube is higher than this moment of outer tube which is indicated from the obtained results of this research; thus, achieving higher reliability in nanostructures, the critical bending moment of outer tube sho

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Zhang, Bing, Gui-Sen Feng, Yan-Lei Wang, Cong-Cong Lai, Chen-Chen Wang, and Xia-Min Hu. "Elliptical FRP-Concrete-Steel Double-Skin Tubular Columns under Monotonic Axial Compression." Advances in Polymer Technology 2020 (January 24, 2020): 1–16. http://dx.doi.org/10.1155/2020/7573848.

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Hybrid FRP-concrete-steel double-skin tubular columns (hybrid DSTCs) are a novel form of hollow columns consisting of an outer FRP tube, an inner steel tube, and an annular layer of concrete between the two tubes. Due to the effective confinement of the two tubes, the concrete in hybrid DSTCs is well confined, leading to excellent ductility and strength enhancement. Hybrid DSTCs also have excellent corrosion resistence due to the effective protection of the outer FRP tube. However, existing studies mainly focused on hybrid DSTCs with a circular cross-section. When subjecting to different loads

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Wang, Jian, Hong Tu Sun, and Jing Huang. "Improved Design of Thin-Walled Square Tube for Energy Absorption." Advanced Materials Research 460 (February 2012): 389–92. http://dx.doi.org/10.4028/www.scientific.net/amr.460.389.

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Thin-walled tubes are the main structures to absorb the energy in front impact at the desired controlled collision. A thin-walled square tube is designed by use of a double deck square tube with clapboards which has a stable structure with less Euler deformation in front impact. More deformations of extensional collapse in the double deck square tube with clapboards improve the performance of structures for energy absorption. Induced slots are employed in the square tube to decrease the peak acceleration in front impact. Collision process can be controlled by the slots for the stable deformati

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He, Shiquan, Linhao Wei, Jianfeng Lu, and Weilong Wang. "Heat transfer characteristics of molten salt flowing in steam generator." Thermal Science, no. 00 (2021): 225. http://dx.doi.org/10.2298/tsci210103225h.

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The paper respectively investigated the heat transfer characteristics of molten salt flowed in shell-and-tube and double-pipe steam generator. The shell-and-tube steam generator had seven tubes and molten salt flowed outside the tubes, while the double-pipe steam generator had two concentric tubes and molten salt flowed in the annular duct formed by two tubes. Inlet temperature of molten salt ranged from 270?C to 420?C. The experimental results showed the effect of temperature on heat transfer coefficient was more significant in the double-pipe steam generator compared to the shell-and-tube st

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Hatamachi, Tsuyoshi, Tatsuya Kodama, Yuki Isobe, Daisuke Nakano, and Nobuyuki Gokon. "Double-Walled Reactor Tube with Molten Salt Thermal Storage for Solar Tubular Reformers." Journal of Solar Energy Engineering 128, no. 2 (2005): 134–38. http://dx.doi.org/10.1115/1.2183803.

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This paper proposes a novel-type of “double-walled” reactor tube with molten-salt thermal storage at high temperatures for use in solar tubular reformers. The prototype reactor tube is demonstrated on the heat-discharge and chemical reaction performances during cooling mode of the reactor tube at laboratory scale. The Na2CO3 composite material with MgO ceramics was filled into the outer annulus of the double-walled reactor tube while the Ru-based catalyst particles were filled into the inner tube. The heat discharge form the molten Na2CO3 circumvented the rapid temperature change of the cataly

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Brodsky, Jay B., and Alex Macario. "Modified bronchocath double-lumen tube." Journal of Cardiothoracic and Vascular Anesthesia 9, no. 6 (1995): 784–85. http://dx.doi.org/10.1016/s1053-0770(05)80265-4.

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Desai, F. M., and D. A. Rocke. "Double-lumen Tube Design Fault." Anesthesiology 73, no. 3 (1990): 575. http://dx.doi.org/10.1097/00000542-199009000-00042.

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Fortier, G., D. Coté, J. Soucy, R. Lelièvre, and J. Bussières. "Left double lumen tube malposition." British Journal of Anaesthesia 93, no. 3 (2004): 475–76. http://dx.doi.org/10.1093/bja/aeh599.

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Komatsu, K., T. Arai, and Y. Hatano. "A modified double-lumen tube." Anaesthesia 43, no. 12 (2007): 1064. http://dx.doi.org/10.1111/j.1365-2044.1988.tb05730.x.

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Fikkers, B. G., and D. F. Zandstra. "Incorrectly labelled double-lumen tube." Journal of Cardiothoracic and Vascular Anesthesia 8, no. 5 (1994): 605. http://dx.doi.org/10.1016/1053-0770(94)90184-8.

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Saito, Toshiyuki, Tsuguo Naruke, Edward Carney, Yoko Yokokawa, Kazuaki Hiraga, and Christer Carlsson. "New Double Intrabronchial Tube (Naruke Tube) for Tracheostomized Patients." Anesthesiology 89, no. 4 (1998): 1038–39. http://dx.doi.org/10.1097/00000542-199810000-00037.

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31

Koca, Tarkan, and Aydın Citlak. "Design and analysis of double-pipe heat exchanger using both helical and rotating inner pipe." Thermal Science 25, no. 2 Part B (2021): 1545–59. http://dx.doi.org/10.2298/tsci201010066k.

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In this study, the effects of rotating straight and helical inner tubes is experimentally discussed to determine heat transfer and pressure losses in rotating tubes and improve heat transfer. The outer tube remains stationary and the inner tube is rotated at different speeds in the work. In the experiments for straight and helical tubes, the flow regime is turbulent. According to the results, Nusselt number, pressure loss, and efficiency of heat exchanger were gauged. In addition, empirical formulas were obtained for each pipe type. It is observed that as the rotation speed of the pipe increas

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Luo, Cheng, Xingyuan Huang, Tongke Liu, and Hesheng Liu. "Research on Inner Gas Inflation Improvements in Double-layer Gas-assisted Extrusion of Micro-tubes." Polymers 12, no. 4 (2020): 899. http://dx.doi.org/10.3390/polym12040899.

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Micro-tubes have small diameters and thin wall thicknesses. When using double-layer gas-assisted extrusion (DGAE) technology to process micro-tubes, due to the influence of flow resistance, airflow from the inner gas-assisted layer cannot flow into the atmosphere through the lumen. Over time, it will inflate or even fracture the micro-tubes intermittently and periodically. To solve this problem, a new double-layer micro-tube gas-assisted extrusion die was designed in this study. Its mandrel has an independent airway leading to the lumen of the extrudate, with which the gas flow into the lumen

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Zhang, Bing, Yu-Jun Qi, Tao Huang, Qian-Biao Zhang, Yu Hu, and Xia-Min Hu. "Effect of Fiber Angles on Hybrid Double-Tube Concrete Columns under Monotonic Axial Compression." Advances in Civil Engineering 2019 (December 20, 2019): 1–19. http://dx.doi.org/10.1155/2019/2363185.

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Hybrid double-tube concrete columns (hybrid DTCCs) are a novel form of hybrid columns that combine fiber-reinforced polymer (FRP) composites with two traditional construction materials (i.e., concrete and steel). Hybrid DTCCs consist of an outer FRP tube and an inner steel tube aligned concentrically, with the space between the two tubes and inside of the steel tube filled with concrete. The three materials (i.e., FRP, concrete, and steel) in hybrid DTCCs are combined optimally to deliver excellent performances, such as excellent ductility and remarkable corrosion resistance. Recently, hybrid

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Gao, J. Y., W. Q. Teng, J. F. Wang, and J. Xie. "Boiling simulation and PEC evaluation of helically corrugated tubes in vertical grooves with different pipe diameters." Journal of Physics: Conference Series 2047, no. 1 (2021): 012013. http://dx.doi.org/10.1088/1742-6596/2047/1/012013.

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Abstract The double tube structure is simulated, R32 in the inner helical corrugated tubes with vertical grooves is heated by the water flowing in the outer tube to make it boil. The influence of pipe diameter and number of vertical grooves on the performance of double tube is analyzed. The evaporation temperature of the refrigerant is 283K. The temperatures of inlet refrigerant and inlet water are 280K and 320K, respectively. The flow velocity of inlet refrigerant and inlet water are 1m/s and 5m/s, respectively. The simulation results show that, compared with the smooth pipe, when the inner p

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Wang, Bing, Lu Ma, and Xiao Liu. "Analysis on the Status of Concrete Filled Double Skin Steel Tubes Mechanical Properties." Applied Mechanics and Materials 488-489 (January 2014): 374–76. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.374.

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Concrete filled double skin steel tubes which is developed on the basis of concrete filled steel tube, it is a new member. Combination of Chinese and foreign literature, this paper comprehensively discusses the research results about concrete filled double skin steel tubes member, then put forward the further research work, for concrete filled double skin steel tubes structure in deeply study to play a guiding role.

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Krishnan, Annur Srinivasan, and Palanivelu Gowtham. "Computational study of Staggered and Double Cross Flow Heat Exchanger." Defence Science Journal 67, no. 4 (2017): 396. http://dx.doi.org/10.14429/dsj.67.11427.

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The preliminary findings of a comparative study of heat transfer rate and pressure drop between conventional staggered flow and double cross flow heat exchanger is reported. Excepting for the tube arrangements, the shell and tube dimensions, materials and inlet conditions are retained the same for the two configurations. While in the conventional arrangement, adjacent rows of tubes are normal only to the fluid flow in the shell, in the double cross-flow arrangement, they are normal to both fluid flow direction in the shell as well as to each other. Shell dimensions are 100 cm × 20 cm × 20 cm a

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Tarrad, Ali H. "3D Numerical Modeling to Evaluate the Thermal Performance of Single and Double U-tube Ground-coupled Heat Pump." HighTech and Innovation Journal 3, no. 2 (2022): 115–29. http://dx.doi.org/10.28991/hij-2022-03-02-01.

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The heat transfer rate and borehole design represent great challenges to the thermal equipment designer of the ground-coupled heat pump. The present model represents a mathematical and numerical technique implemented to tackle such a problem. A thermal assessment was established to estimate the total energy dissipated to the ground zone for a heat pump utilized for cooling purposes in the summer season. Comsol Multiphysics 5.4 software was used to build a 3-dimensional model to assess the thermal performance of single and double U-tube boreholes that circulate water as a thermal transfer mediu

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Damude, Samantha, Anneke C. Muller Kobold, Esther Bastiaannet, Schelto Kruijff, Harald J. Hoekstra, and Kevin P. Wevers. "Double venipuncture is not required for adequate S-100B determination in melanoma patients." BioTechniques 69, no. 5 (2020): 371–78. http://dx.doi.org/10.2144/btn-2019-0147.

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S-100B is used in melanoma follow-up. This serum biomarker is also present in adipocytes; therefore, subcutaneous adipocytes trapped in the needle before performing a venipuncture could contaminate the serum. The aim was to study the influence of adipocyte contamination on blood samples used for S-100B analysis, possibly resulting in falsely elevated S-100B values. A total of 294 serum samples were collected from 147 American Joint Committee on Cancer staging stage III melanoma patients. The mean difference between the first (dummy) and second tubes was 0.003 μg/l (p = 0.077), with a decrease

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Djamaluddin, F., Shahrum Abdullah, A. K. Arrifin, and Z. M. Nopiah. "Multi-Objective Optimization of Aluminum Foam Double Tube Subjected to Oblique Impact Loading for Automobile Bumper Beam." Applied Mechanics and Materials 663 (October 2014): 93–97. http://dx.doi.org/10.4028/www.scientific.net/amm.663.93.

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This paper presents the multi-objective optimization of aluminum foam double circular tube under oblique load for various load angle and geometry parameters. Thin-walled metallic tubes are used in vehicle structures to absorb impact energy, such as in bumper beams. In this research, aluminum alloy AA6063 T6 foam filled tube which both end were clamped, at bottom as boundary condition and at the top of tube applied quasi-static force of load angle of 0o to 30o with respect to longitudinal direction of tubes. The finite element analysis using ABAQUS code was validated according to the relevant e

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Manoj, M. Murali, and Mu Raajaram. "Endotracheal Tube Cuff Pressure Monitoring Prospective Double Blind Randomised Control Study." Indian Journal of Anesthesia and Analgesia 5, no. 7 (2018): 1146–50. http://dx.doi.org/10.21088/ijaa.2349.8471.5718.10.

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WEI, Xinyu, Chunhui DAI, Suxia HOU, yun TAI, and Fuyu ZHAO. "ICONE19-43034 Thermal Optimization of Primary Side in Double-Tube OTSG." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2011.19 (2011): _ICONE1943. http://dx.doi.org/10.1299/jsmeicone.2011.19._icone1943_11.

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Ke, Zhang, Zhang Huijie, and Tang Zhiping. "Experimental study of thin-walled TiNi tubes under radial quasi-static compression." Journal of Intelligent Material Systems and Structures 22, no. 18 (2011): 2113–26. http://dx.doi.org/10.1177/1045389x11426344.

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TiNi tubes with various sizes and boundary constraints subjected to radial quasi-static compression were systematically studied. The contour curves of the tubes were extracted from the real-time charge-coupled device (CCD) images, and the circumferential strain, bending moment, and phase composition distribution were calculated based on the contour curves and some assumptions. It was found that the load–displacement curves had hysteretic loops, and all specimens could recover to their initial shape after unloading, which was attributed to the effects of austenite–martensite phase transformatio

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Wei, Xinyu, Chunhui Dai, Li Wang, and Fuyu Zhao. "Inner tube optimization of double-tube once-through steam generator." International Journal of Heat and Mass Transfer 59 (April 2013): 93–102. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.11.058.

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Shakouchi, Toshihiko, Kazuma Yamamura, Koichi Tsujimoto, and Toshitake Ando. "Heat Transfer Enhancement of Circular- and Petal- Shaped Double-Tube-Type Heat Exchangers by Triple Ones." Energies 13, no. 24 (2020): 6590. http://dx.doi.org/10.3390/en13246590.

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Conventional circular double or triple tube type heat exchanger, DHE or THE, is one of the compact heat exchangers; a large number of studies have been performed to improve their heat transfer performance. The authors demonstrated that a petal-shaped special DHE with a large wet perimeter yields a high heat transfer efficiency, η. In this study, the DHE with six or five petals-, five shallow petals-, and circular-inner tubes were used. To further improve the η of the DHE, a THE with a petal-shaped inner tube along with the middle and outer circular tubes were used. Hot water flowed through the

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Chen, Qi Wei, and Xin Ping Ouyang. "Experimental Study on Condensation of R134a inside Horizontal Inner-Micro-Fin Tubes." Advanced Materials Research 354-355 (October 2011): 753–58. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.753.

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An experimental study of condensation heat transfer of R134a on horizontal inner enhanced tubes was conducted. The tested tubes were inner-micro-fin tubes, named tube A and tube B, respectively. The tested pieces were double-pipe condensers. The glycol solution flowed in the space between outer surface of the enhanced tube and inner surface of outer tube. In the experiment, condensing temperature inside the enhanced tube was 51°C, and the flow velocity of glycol solution was 3.35m/s. The inlet temperature of glycol solution changed according to mass velocity of refrigerant, to maintain certain

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Potocnik, Iztok, Andreas Kupsch, and Vesna Jankovic. "Iatrogenic rupture of the trachea caused by double Lumen tube intubation." Open Medicine 5, no. 6 (2010): 737–41. http://dx.doi.org/10.2478/s11536-010-0046-1.

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AbstractAcute injuries of the tracheobronchial system are rare and life-threatening situations. Tracheal rupture most commonly occurs after blunt trauma to the chest. It is a rare but most concerning immediate complication of intubation. One-lung ventilation is required in lung surgery. Video assisted thoracoscopic procedures are an absolute indication for one-lung intubation. The double-lumen tube is the mainstay of one lung ventilation. Due to their larger size and rigidity, double lumen tubes are more difficult to insert, and complications are more common than with single lumen tubes. Opini

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Hong, Feng, Bin Wei, and Lin Chen. "Preliminary Study on Biosynthesis of Bacterial Nanocellulose Tubes in a Novel Double-Silicone-Tube Bioreactor for Potential Vascular Prosthesis." BioMed Research International 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/560365.

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Bacterial nanocellulose (BNC) has demonstrated a tempting prospect for applications in substitute of small blood vessels. However, present technology is inefficient in production and BNC tubes have a layered structure that may bring danger after implanting. Double oxygen-permeable silicone tubes in different diameters were therefore used as a tube-shape mold and also as oxygenated supports to construct a novel bioreactor for production of the tubular BNC materials. Double cannula technology was used to produce tubular BNC via cultivations withAcetobacter xylinum, and Kombucha, a symbiosis of a

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Cui, Xiao-Lei, Xiao-Song Wang, and SJ Yuan. "Further assessment of the plastic instability of thin-walled tubes in double-sided hydro-bulging process with verification experiments." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 233, no. 3 (2017): 776–86. http://dx.doi.org/10.1177/0954405417738285.

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An interesting process of double-sided tube hydro-bulging was proposed to provide a beneficial three-dimensional stress state in the deformation zone of the tube, so as to delay the occurrence of bursting on the tube. Previously proposed forming limit theory models with consideration of through-thickness normal stress found that the external pressure could lead to a deferred occurrence of plastic instability, but it has not been confirmed experimentally. In this article, the tensile plastic instability of tubes under double-sided pressures is further assessed based on the classical plastic ins

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Zheng, Yongqian, Cunhua Wang, and Manying Chen. "Flexural strength and stiffness of circular double-skin and double-tube concrete-filled steel tubes." Marine Structures 81 (January 2022): 103126. http://dx.doi.org/10.1016/j.marstruc.2021.103126.

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NAKAYAMA, Yoshito. "Essentials of Double Lumen Tube Extubation." JOURNAL OF JAPAN SOCIETY FOR CLINICAL ANESTHESIA 38, no. 2 (2018): 196–202. http://dx.doi.org/10.2199/jjsca.38.196.

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