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Journal articles on the topic 'Air bellows'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Chen, Jun-Jie, Zhi-Hong Yin, Subhash Rakheja, Jiang-Hua He, and Kong-Hui Guo. "Theoretical modelling and experimental analysis of the vertical stiffness of a convoluted air spring including the effect of the stiffness of the bellows." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 4 (2017): 547–61. http://dx.doi.org/10.1177/0954407017704589.

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A new refined model including a model of the bellows to describe the vertical stiffness of a convoluted air spring is developed. The new model of a convoluted air spring incorporates the structural parameters including the effective area, the rate of change in the effective area, the effective volume, the rate of change in the effective volume and the stiffness of the bellows. Analytical models of the structural parameters of a convoluted air spring are established using a geometrical analysis approach. Two convoluted air springs (type 1B5002 and type 2B5281) are designed and manufactured for

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2

Currier, Frederick A., and Carl C. Herb. "Sound insulated bellows‐type air terminal valve." Journal of the Acoustical Society of America 86, no. 4 (1989): 1631. http://dx.doi.org/10.1121/1.398659.

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3

GU, Taiping. "Equilibrium Performance Analysis for Bellows Type Air Spring." Journal of Mechanical Engineering 47, no. 03 (2011): 69. http://dx.doi.org/10.3901/jme.2011.03.069.

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4

Aoki, Takeshi, and Shigeo Hirose. "Development of Slime Robot Using Bridle Bellows." Journal of Robotics and Mechatronics 16, no. 3 (2004): 286–92. http://dx.doi.org/10.20965/jrm.2004.p0286.

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Slim Slime Robot (SSR) looked like the active cord mechanism (the snake like robot) and composed of units that can stretch, shrink and bend actively, is for several tasks in the narrow space such as moving under collapsed houses and inspection of pipelines at plants. In this paper, we propose new concept, it is named “Bridle Drive.” And we developed the prototype model of the units of the SSR-II. This unit has the Bridle Bellows composed of a large caliber bellows and wire lock system. Bridle Bellows is able to change shape by controlling wire length and air pressure and produces a large power

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5

Matsumoto, Yuta, Isao Kurashige, and Kan Yoneda. "Development of Concrete Inspection Robot with Dual Stage Suckers." Journal of Robotics and Mechatronics 31, no. 6 (2019): 816–26. http://dx.doi.org/10.20965/jrm.2019.p0816.

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To automate nondestructive inspections for concrete walls by measuring their air permeability, we developed a wall climbing robot with suckers. It is configured to move by alternately moving the central body and the four leg tip suckers forward. The central sucker is a triple ring type, making it useful for climbing and measuring as well as acquiring the air permeability data in the depth direction. The leg tip suckers use a sponge material to ensure good sealing with the concrete wall and are double suckers when incorporated with bellows to generate power that sticks them fast, by pressing th

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Li, Ruijun, Yongjun Wang, Pan Tao, et al. "Drift Reduction of a 4-DOF Measurement System Caused by Unstable Air Refractive Index." Sensors 20, no. 21 (2020): 6329. http://dx.doi.org/10.3390/s20216329.

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Laser beam drift greatly influences the accuracy of a four degrees of freedom (4-DOF) measurement system during the detection of machine tool errors, especially for long-distance measurement. A novel method was proposed using bellows to serve as a laser beam shield and air pumps to stabilize the refractive index of air. The inner diameter of the bellows and the control mode of the pumps were optimized through theoretical analysis and simulation. An experimental setup was established to verify the feasibility of the method under the temperature interference condition. The results indicated that

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7

Yamaguchi, Daisuke, Tatsuya Hanaki, Yuji Ishino, Masaya Takasaki, and Takeshi Mizuno. "Fabrication of a Polyimide Film Pneumatic Actuator by Molding and Welding Processes." Actuators 10, no. 8 (2021): 177. http://dx.doi.org/10.3390/act10080177.

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The bellows pneumatic actuator, which is made by folding a non-stretch film, has been proposed for various applications because it is easy to fabricate and is extremely thin and light. However, it has subpar durability performance, especially in the folded part of the film. In this study, we propose an actuator with a pod structure that possesses high design flexibility and is free from folding. A method of molding a pod structure on a polyimide film was established and a pneumatic actuator was successfully fabricated by using PI films. Two types of PI film pneumatic actuators with the same cu

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8

Enhorning, Goran, Sandrijn van Schaik, Claes Lundgren, and Ida Vargas. "Whole-body plethysmography, does it measure tidal volume of small animals?" Canadian Journal of Physiology and Pharmacology 76, no. 10-11 (1998): 945–51. http://dx.doi.org/10.1139/y99-002.

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A whole-body plethysmograph was used for mice. The increase in pressure caused by each inhalation was equivalent to the increase that could be calculated to result from heating and humidification of the inhaled air. However, comprehending that a drop in temperature and humidity would cause an abrupt pressure decline during exhalation was difficult. Pressure changes in the plethysmograph were also studied with an artificial chest, modeling the respiratory mechanics, but without the "inhaled" air being heated or humidified. The "chest" consisted of a metal bellows oscillated by a stepper motor 2

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9

Imai, Tatsunori, Daisuke Watanabe, and Toshiaki Yachi. "Analysis of Air Supply in Bellows-Type DMFC by Three-Dimensional Simulation." ECS Transactions 17, no. 1 (2019): 491–97. http://dx.doi.org/10.1149/1.3142779.

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10

Li, Hongguang, Konghui Guo, Shuqi Chen, Wei Wang, and Fuzhong Cong. "Design of Stiffness for Air Spring Based on ABAQUS." Mathematical Problems in Engineering 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/528218.

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In this paper, an axisymmetric finite element (FE) model of an air spring was carried out with the software ABAQUS to design its target vertical stiffness. The bellows was simulated by the reinforced surface element. The compressed gas in the cavity of the air spring was represented by the hydrostatic fluid element. The target stiffness is obtained by modifying the valid area of the cross section. At last, the results of experiment coincided well with the simulation data. The study shows that the static stiffness of air spring is sensitive to the effective area of the cross section. The conclu

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11

Shibuya, Koji, and Sho Yoshii. "New Volume Change Mechanism Using Metal Bellows for Buoyancy Control Device of Underwater Robots." ISRN Robotics 2013 (January 21, 2013): 1–7. http://dx.doi.org/10.5402/2013/541643.

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We propose a new volume change mechanism using a metal bellows for a buoyancy control device of underwater robots and vehicles. Our proposed buoyancy control method utilizes the volume change caused by the phase-change of materials. We chose paraffin wax as a phase-change material because its volume change exceeds other candidates. Our proposed device consists of a metal bellows and an aluminum housing that contains paraffin wax and water. The paraffin wax is heated and cooled by a nichrome wire and a peltier device. We conducted two experiments and confirmed that the heat sink in the aluminum

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12

Du, Jianming, Suzhen Shi, Shizhou Luo, Tao Cheng, Xiaobo Peng, and Ping Feng. "Studies on modeling a single-bellows air spring and simulating its inherent characteristics." JOURNAL OF SHENZHEN UNIVERSITY SCIENCE AND ENGINEERING 30, no. 2 (2013): 167–72. http://dx.doi.org/10.3724/sp.j.1249.2013.02167.

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13

Alekseichyk, Olga Mykolaivna, and Serhii Ivanovych Trubachev. "Numerical simulation of bellows compensators stress-strain state in air in-take system." Information systems, mechanics and control, no. 21 (October 15, 2019): 80–85. http://dx.doi.org/10.20535/2219-3804212019194279.

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14

Chervach, Yu B., V. A. Mezentsev, N. E. Galin, and A. B. Kim. "Analysis of Force Dependences of Diamond Burnishing with Different Types of Burnishing Tools." Applied Mechanics and Materials 756 (April 2015): 8–14. http://dx.doi.org/10.4028/www.scientific.net/amm.756.8.

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The article presents the results of studies on measuring components of force of diamond burnishing of surfaces with variable radius of curvature. The impact of structural elements of burnishing tools of different types on components of burnishing force was analyzed. The impact of different actuators of burnishing tools on components of burnishing force was analyzed. The design of the burnishing tool with an air receiver (bellows with compressed air as an actuator) with a parallelogram-type mounting of the indenter on the four flat posts, which ensures burnishing of profiled and other types of

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15

Weiser, Stephan, Thomas Lehmann, Ralf Landgraf, Niels Goldberg, Hendrik Donner, and Jörn Ihlemann. "Experimental and numerical analysis of cord–elastomer composites." Journal of Rubber Research 24, no. 2 (2021): 211–25. http://dx.doi.org/10.1007/s42464-021-00091-x.

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AbstractIn this paper, experimental and numerical investigations on cord–elastomer composites are presented. A finite-element model is introduced, which was developed within the framework of an industrial project. The model is able to simulate an elastomer matrix with inserted cords as load bearing elements and to predict the strains and stresses in cord and elastomer sections. The inelastic material behavior of the elastomer matrix and the yarns is described by corresponding material models suitable for large deformation processes. With the help of a specially developed demonstrator bellows,

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16

AZECHI, Toshio, Masanori HANSAKA, Naoto MIFUNE, and Riichiro OHARA. "Study on Cbanges in Material Properties of Air Spring Rubber Bellows for Railway Vehicles." KOBUNSHI RONBUNSHU 58, no. 2 (2001): 92–98. http://dx.doi.org/10.1295/koron.58.92.

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17

MURAKI, Yuuhi, Toshinori FUJITA, Kazutoshi SAKAKI, Kenji KAWASHIMA, and Toshiharu KAGAWA. "J113031 Ultra Precise Positioning of Air Guide Slight Movement Stage Driven by Pneumatic Bellows." Proceedings of Mechanical Engineering Congress, Japan 2012 (2012): _J113031–1—_J113031–5. http://dx.doi.org/10.1299/jsmemecj.2012._j113031-1.

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18

Imai, Tatsunori, and Toshiaki Yachi. "Analysis of Air Supply in Multi-Cells Connecting Bellows Type DMFC by Three-Dimensional Simulation." ECS Transactions 26, no. 1 (2019): 299–302. http://dx.doi.org/10.1149/1.3429001.

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19

Pelz, Peter F., Thomas Bedarff, and Johannes Mathias. "Uncertainties with Respect to Active Vibration Control." Applied Mechanics and Materials 104 (September 2011): 161–75. http://dx.doi.org/10.4028/www.scientific.net/amm.104.161.

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The content of this work is the presentation of the prototype of a new active suspension system with an active air spring. As being part of the Collaborative Research Unit SFB805 “Control of Uncertainties in Load-Carrying Structures in Mechanical Engineering”, founded by the Deutsche Forschungsgemeinschaft DFG, the presented active air suspension strut is the first result of the attempt to implement the following requirements to an active suspension system: Harshness and wear: Reduced coulomb friction, i.e. no dynamic seal. Plug and drive solution: Connected to the electrical power infrastruct

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20

Kim, Dong Soo, Sang Kyu Bae, and Kyung Hyun Choi. "Characteristic Analysis and Experimental Evaluation of Fluidic Muscle Cylinder." Key Engineering Materials 326-328 (December 2006): 119–22. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.119.

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The fluidic muscle cylinder consists of an air bellows tube, flanges and lock nuts. Its features are softness of material and motion, simplicity of structure, low production cost and high power efficiency. Recently, unlike the pneumatic cylinder, the fluidic muscle cylinder without air leakage, stick slip, friction or seals was developed as a new concept actuator. It has characteristics such as light weight, low price, high response, durable design, long life, high power and high contraction. In this study, we carried out finite element modeling and analysis on the main design variables such a

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21

Kawashima, Kenji, Takeshi Arai, Kotaro Tadano, Toshinori Fujita, and Toshiharu Kagawa. "Development of coarse/fine dual stage using pneumatically driven bellows actuator and cylinder with air bearings." Precision Engineering 34, no. 3 (2010): 526–33. http://dx.doi.org/10.1016/j.precisioneng.2010.02.005.

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22

Imai, Tataunori, and Yoshiaki Yachi. "Design of the Air Flow Path in Bellows-Type DMFC Based on the Three-Dimensional Simulations." ECS Transactions 30, no. 1 (2019): 353–56. http://dx.doi.org/10.1149/1.3562491.

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23

FUJITA, Tomomasa, and Masaru ZAKO. "Evaluation Method for Mechanical Property of Bellows Type Air Spring Made of Woven Fabric Reinforced Rubber." Transactions of the Japan Society of Mechanical Engineers Series A 68, no. 673 (2002): 1298–303. http://dx.doi.org/10.1299/kikaia.68.1298.

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24

MATSUDA, Shinichi, and Shigeo KATO. "608 Operation Control of a Metal Bellows type Gas-liquid Phase-change Actuator in the Air." Proceedings of Conference of Tohoku Branch 2001 (2001): 181–82. http://dx.doi.org/10.1299/jsmeth.2001.181.

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25

Zheng, Yiqian, Wen-Bin Shangguan, and Subhash Rakheja. "Modeling and performance analysis of convoluted air springs as a function of the number of bellows." Mechanical Systems and Signal Processing 159 (October 2021): 107858. http://dx.doi.org/10.1016/j.ymssp.2021.107858.

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26

Liang, Shu Lin, Ren Luo, and Ping Bo Wu. "Safety Analysis for High Speed Bogie Technologies of CRH3 EMU." Advanced Materials Research 479-481 (February 2012): 797–802. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.797.

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The bogie technology of the 350km/h EMU train is one of the key parts for China high speed railways. Through analysis of the high speed bogy for CRH3 EMU train, the design conceptions and methodologies of the bogy structure and suspension systems are better understood. Technical procedures for the bogie design are carefully investigated, which includes the wheel/rail interaction, helical spring and high property rubber pad used in primary suspension, high flexible and large convolution bellows type air spring, anti-roll bar and two point control of air springs used in secondary suspension, and

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27

Jeng, U.-Ser, Chiu Hun Su, Chun-Jen Su, et al. "A small/wide-angle X-ray scattering instrument for structural characterization of air–liquid interfaces, thin films and bulk specimens." Journal of Applied Crystallography 43, no. 1 (2009): 110–21. http://dx.doi.org/10.1107/s0021889809043271.

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At the National Synchrotron Radiation Research Center, a small/wide-angle X-ray scattering (SAXS/WAXS) instrument has been installed at the BL23A beamline with a superconducting wiggler insertion device. This beamline is equipped with double Si(111) crystal and double Mo/B4C multilayer monochromators, and an Si-based plane mirror that can selectively deflect the beam downwards for grazing-incidence SAXS (GISAXS) studies of air–liquid or liquid–liquid interfaces. The SAXS/WAXS instrument, situated in an experimental hutch, comprises collimation, sample and post-sample stages. Pinholes and slits

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28

Figura, Konstantin Nikolaevich, Igor Mikhailovich Yefremov, and Dmitry Viktorovich Lobanov. "Research into Fatigue Crack Life Characteristics of Bellows Operated under High-Frequency Load." Advanced Materials Research 1025-1026 (September 2014): 162–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.162.

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The article considers the analysis of the bellows fatigue strength carried out using the Ansys software package. The results of the research into the fatigue crack life and fatigue safety factor of a bellow valve are given.The reliability evaluation of the bellow valve working under the high-frequency load has been given by the authors.

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Liu, Jing, Yang Liu, Lan Yun Li, et al. "Springback Analysis of Thin-Walled Stainless Steel Bellow in Hydroforming." Advanced Materials Research 1095 (March 2015): 855–58. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.855.

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Springback has an important influence on the forming quality of thin-walled stainless bellows hydroforming. By developing a FE model, the stress distribution is investigated and springback characteristics of two specification bellows are addressed. The results show that: (1) For tube Φ26×0.5, the maximum circumferential tensile/compressive stresses decrease by 32% and 29.1% after springback, respectively. The maximum longitudinal tensile/compressive stresses decrease by 51.8% and 39.6%, respectively. (2) Three indices are proposed to describe the bellow profile change after springback, namely,

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30

Odenbach, Robert, Axel Boese, and Michael Friebe. "Interactive monitoring system for visual respiratory biofeedback." Current Directions in Biomedical Engineering 2, no. 1 (2016): 723–26. http://dx.doi.org/10.1515/cdbme-2016-0157.

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AbstractIn almost any medical procedure respiratory motion is an issue and may result in image degradation. Most currently available devices and systems, which are intended to reduce respiratory influences do not come into operation however in clinics due to their high cost and complex operation. In our paper we evaluated an interactive breath hold control system that helps flat breathing to subsequently reduce respiratory motion during signal acquisitions or procedure treatments. With that the human subjects are enabled to regulate their own breath by following visual feedback via a specially

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31

Ohno, Hidetaka, and Shigeru Hirose. "A Study of Active Cord Mechanisms -Basic Design of Pneumatically Driven Active Cord Mechanism-." Journal of Robotics and Mechatronics 15, no. 4 (2003): 416–23. http://dx.doi.org/10.20965/jrm.2003.p0416.

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This paper describes mobile robotic systems known as Active Cord Mechanisms (ACMs). The systems have articulated bodies composed of serially connected units that can actively bend and stretch. One such example of a mobile ACM is the Slim Slime-I. It is composed of a series of interconnected pneumatic 3D modules. The 3D module is thus termed because of its three degrees of freedom: pitch, yaw and stretch. Furthermore, each module contains a variety of features: an air pressure distribution mechanism to reduce the amount of tubes contained, a pneumatic drive system with a pair of solenoid valves

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32

Kaššay, Peter, Jaroslav Homišin, Matej Urbanský, and Robert Grega. "Transient Torsional Analysis of a Belt Conveyor Drive with Pneumatic Flexible Shaft Coupling." Acta Mechanica et Automatica 11, no. 1 (2017): 69–72. http://dx.doi.org/10.1515/ama-2017-0011.

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Abstract Development and application of pneumatic flexible shaft couplings have been in the center of our department research activities for a long time. These couplings are able to change torsional stiffness by changing pressure in their flexible elements – air bellows. Until now we have dealt with the use of pneumatic flexible shaft couplings for tuning mechanical systems working with periodically alternating load torque at steady state. Some mechanical systems, however, operate with a static load torque at constant speed (e.g. hoists, elevators, etc.), where it is necessary to consider the

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33

Ono, Manabu, Toshiaki Hamano, and Shigeo Kato. "Modeling and Fabrication of a Mobile Inspection Microrobot Driven by a Pneumatic Bellows Actuator for Long Pipes." Journal of Robotics and Mechatronics 18, no. 1 (2006): 11–17. http://dx.doi.org/10.20965/jrm.2006.p0011.

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This paper details the modeling and fabrication of an in-pipe mobile inspection microrobot able to move long distances on small diameter pipes using pneumatic and vacuum pressure switched by an electromagnetic valve for driving the microrobot. We propose that the electromagnetic valve be used near the pneumatic actuator to move the distance. A pneumatic pressure of +300kPa and vacuum pressure of -80kPa are supplied to the electromagnetic valve by two air tubes 140m long. The microrobot with four friction rings at both ends of the actuator moves 20m in 15 minutes on vinyl chloride pipe with an

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34

Satsumoto, Yayoi, Haihua Wang, Yae Hasebe, Kinzo Ishikawa, and Masaaki Takeuchi. "The Effect of Bellows Action on Heat Transfer in Clothing System. Part 1. The Effect of Size of Air Space and Air Permeability of Clothing." FIBER 56, no. 11 (2000): 524–36. http://dx.doi.org/10.2115/fiber.56.524.

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35

Chen, Jun-Jie, Zhi-Hong Yin, Xian-Ju Yuan, Guang-Qi Qiu, Kong-Hui Guo, and Xiao-Li Wang. "A refined stiffness model of rolling lobe air spring with structural parameters and the stiffness characteristics of rubber bellows." Measurement 169 (February 2021): 108355. http://dx.doi.org/10.1016/j.measurement.2020.108355.

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36

Garbin, Nicolò, Alexander P. Mamunes, Dennis Sohn, Ryan W. Hawkins, Pietro Valdastri, and Keith L. Obstein. "Evaluation of a novel low-cost disposable endoscope for visual assessment of the esophagus and stomach in an ex-vivo phantom model." Endoscopy International Open 07, no. 09 (2019): E1175—E1183. http://dx.doi.org/10.1055/a-0914-2749.

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Abstract Background and study aims Our academic lab has developed a novel, low-cost, disposable endoscope for assessment of the esophagus and stomach without need for large equipment or complex electronics. Usability and intuitiveness of the platform are unknown. Methods The novel endoscope (NE) consists of a high-definition camera, LED module, and three bellows. Compressed air actuates the bellows, producing camera/LED articulation. Insufflation and lens cleaning ports are present. Video can be displayed on any monitor. Total material costs less than $ 35 US. Five novices, five fellows, and f

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Lerner, Brian M., Jessica B. Gilman, Kenneth C. Aikin, et al. "An improved, automated whole air sampler and gas chromatography mass spectrometry analysis system for volatile organic compounds in the atmosphere." Atmospheric Measurement Techniques 10, no. 1 (2017): 291–313. http://dx.doi.org/10.5194/amt-10-291-2017.

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Abstract. Volatile organic compounds were quantified during two aircraft-based field campaigns using highly automated, whole air samplers with expedited post-flight analysis via a new custom-built, field-deployable gas chromatography–mass spectrometry instrument. During flight, air samples were pressurized with a stainless steel bellows compressor into electropolished stainless steel canisters. The air samples were analyzed using a novel gas chromatograph system designed specifically for field use which eliminates the need for liquid nitrogen. Instead, a Stirling cooler is used for cryogenic s

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Takashima, Kazuto, Toshiro Noritsugu, Jonathan Rossiter, Shijie Guo, and Toshiharu Mukai. "Curved Type Pneumatic Artificial Rubber Muscle Using Shape-Memory Polymer." Journal of Robotics and Mechatronics 24, no. 3 (2012): 472–79. http://dx.doi.org/10.20965/jrm.2012.p0472.

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A novel pneumatic artificial muscle actuator is presented which is based on the design of a conventional curved type pneumatic bellows actuator. By inhibiting the extension of one side with fiber reinforcement, bending motion can be induced when air is supplied to the internal bladder. In this study, we developed a new actuator by replacing the fiber reinforcement with a Shape-Memory Polymer (SMP). The SMP can be deformed above its glass transition temperature (Tg) and maintains a rigid shape after it is cooled below Tg. When next heated above Tg, it returns to its initial shape. When only par

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Zhang, X. Z. "Preliminary Experimental Study on Multi-Parameter Measurement of Fluid Flow by Vibrating Tube." Applied Mechanics and Materials 241-244 (December 2012): 70–74. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.70.

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A tube conveying flow under vibration can induce a number of interesting phenomena, which can be used to measure certain fluid and flow parameters. For example, Coriolis flow meter which uses vibrating tube is now acting as a key mass flow rate instrument in industry. However, the complexity of flow often requires several parameters to be measured in one time. We studied the vibration behavior of a single rigid straight tube connected with elastic bellows at each end in a flow pipe line. Electrical exciters were used to force the tube to vibrate. Displacement transducers were used to measure t

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Schuck, Tanja J., Ann-Katrin Blank, Elisa Rittmeier, et al. "Stability of halocarbons in air samples stored in stainless- steel canisters." Atmospheric Measurement Techniques 13, no. 1 (2020): 73–84. http://dx.doi.org/10.5194/amt-13-73-2020.

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Abstract. Measurements of halogenated trace gases in ambient air frequently rely on canister sampling followed by offline laboratory analysis. This allows for a large number of compounds to be analysed under stable conditions, maximizing measurement precision. However, individual compounds might be affected during the sampling and storage of canister samples. In order to assess halocarbon stability in whole-air samples from the upper troposphere and lowermost stratosphere, we performed stability tests using the high-resolution sampler (HIRES) air sampling unit, which is part of the Civil Aircr

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Machida, T., H. Matsueda, Y. Sawa, et al. "Worldwide Measurements of Atmospheric CO2 and Other Trace Gas Species Using Commercial Airlines." Journal of Atmospheric and Oceanic Technology 25, no. 10 (2008): 1744–54. http://dx.doi.org/10.1175/2008jtecha1082.1.

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Abstract New automated observation systems for use in passenger aircraft to measure atmospheric carbon dioxide (CO2) and other trace species have been developed and are described in this paper. The Continuous CO2 Measuring Equipment (CME) is composed mainly of a nondispersive infrared analyzer, a datalogger, and two calibration cylinders for in situ CO2 measurements. The Automatic Air Sampling Equipment (ASE), on the other hand, is designed for flask sampling; the instrument, connected to a metal bellows pump, is made up of a specially designed control board and can accommodate 12 flasks. The

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POGORELOV, Dmitry, and Alexander RODIKOV. "THE TRAPEZOIDAL FINITE ELEMENT IN ABSOLUTE COORDINATES FOR DYNAMIC MODELING OF AUTOMOTIVE TIRE AND AIR SPRING BELLOWS. PART I: EQUATIONS OF MOTION." Transport Problems 16, no. 2 (2021): 141–52. http://dx.doi.org/10.21307/tp-2021-030.

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43

Delgado, Carlos A., Víctor M. Sánchez, Pablo M. Velásquez, Roberto L. Shimabuku, and Luis Huicho. "Non-clinical performance and acceptability of a small portable respiratory stimulator device for basic neonatal resuscitation." Anales de la Facultad de Medicina 80, no. 3 (2019): 298–304. http://dx.doi.org/10.15381/anales.803.15994.

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Introduction: Neonatal resuscitation demands equipment for respiratory support not always available in rural areas. Innovative devices are required, and rapid prototyping allows to generate them using three-dimensional (3D) designs and printers. Objective: To evaluate the non-clinical performance and the acceptability by health personnel of a neonatal respiratory device produced by rapid prototyping. Methods: Observational study, descriptive, of proof of concept developed in two steps. Step 1: Manufacture of the device with rapid prototyping in three-dimensional (3D) scanners and printers. Ste

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Schmalstig, Judy G., and Heather J. McAuslane. "Developmental Anatomy of Zucchini Leaves with Squash Silverleaf Disorder caused by the Silverleaf Whitefly." Journal of the American Society for Horticultural Science 126, no. 5 (2001): 544–54. http://dx.doi.org/10.21273/jashs.126.5.544.

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Squash silverleaf (SSL) is a physiological disorder of vegetables in the genus Cucurbita L. caused by feeding of nymphs of the silverleaf whitefly (SLW) (Bemisia argentifolii Bellows & Perring). SSL causes a silvering of the leaves and a blanching of fruit. Leaf silvering is caused by developmental separation of the upper epidermis and the palisade mesophyll layer resulting in additional air space and altered light reflection. The anatomical development of SSL was analyzed in young leaves of zucchini squash (Cucurbita pepo L.) using two susceptible genotypes (`Elite' and YSN347-PMR) and tw

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Ali, Md Anas, M. Abdul Kadir, and K. Siddique e. Rabbani. "Development of an electrical impedance based spirometer." Bangladesh Journal of Medical Physics 9, no. 1 (2018): 17–27. http://dx.doi.org/10.3329/bjmp.v9i1.37304.

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Spirometry, or measurement of respiration conventionally involves measurement of the time variation of volume or flow of air breathed in or out through the mouth using an air-flow sensor. Electrical impedance of thorax changes during breathing and conceptually this modality should be applicable in spirometry, but no attempts have been made so far. This paper describes the development of an electrical impedance based spirometer placing electrodes on four limbs so that the whole lung volume may contribute to the measurement. An impedance based measurement system (IBS) consisting of a constant cu

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Ikeda, Kazunori, Toshio Hirano, Tatsuo Yamashita, Makoto Mikami, and Hitoshi Sakakida. "An Experimental Study of Static and Dynamic Characteristics of a 580mm(22.8in.) Diameter Direct Lubrication Tilting Pad Journal Bearing." Journal of Tribology 128, no. 1 (2005): 146–54. http://dx.doi.org/10.1115/1.2114929.

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Direct lubrication tilting pad journal bearings (DLTPJ bearings) have rarely been applied to large-scale rotating machinery, such as turbines or generators, whose journal diameters are more than 500mm. In this paper, static and dynamic characteristics of a 580mm(22.8in.) diameter DLTPJ bearing were studied experimentally using a full-scale bearing test rig. In the static test, distribution of metal temperature, oil film pressure, and bearing loss were measured in changing oil flow rate, with mean bearing pressure ranging up to 2.9MPa. The maximum metal temperature of the DLTPJ bearing was comp

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Lu, Sen Kai, Jian Huan Su, Shu De Liao, et al. "FEM Analysis on a Rear Axle Housing Oil-Leakage Prediction of Four-Wheel Farm Transporters Based on COSMOS." Applied Mechanics and Materials 120 (October 2011): 70–73. http://dx.doi.org/10.4028/www.scientific.net/amm.120.70.

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A finite element method (FEM) analysis based on COSMOS study with the aim to find the causes and effects of deformations in the interface between the rear axle housing and the central gear house of the four-wheel farm transporters during operation has been performed. The present design is analyzed with the aid of a mixed-fidelity, or mixed-grain, FE-model. Boundary conditions are defined on the bushings in front of the rear axle and on the air bellows behind the rear axle. The different load scenarios are represented by forces either on the wheels, the central gear or on the rear axle housing.

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Azimee, Asfar, and Dinesh Singh Thounaojam. "Damage to endotracheal cuff inflation tube by harmonic scalpel in tonsillectomy leading to compromised airway." Journal of Society of Anesthesiologists of Nepal 3, no. 1 (2016): 41–43. http://dx.doi.org/10.3126/jsan.v3i1.14596.

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Use of harmonic scalpel has increased in the recent past for different surgical procedures. We report a case of damage to an endotracheal tube inflation line in a 47 year old female patient who underwent elective tonsillectomy due to harmonic scalpel. Pre-anaesthetic evaluation of the patient revealed no abnormalities. The patient’s trachea was intubated via nasal route with a cuffed north facing Ring, Adair and Elwyn tube of 7.0 mm internal diameter. The cuff was inflated after confirmation of tracheal placement of tube and pharyngeal packing was done. After 30 minutes of surgery, the bellows

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Kadir, M. Abdul, Tanvir Noor Baig, and K. Siddique-e. Rabbani. "FOCUSED IMPEDANCE METHOD TO DETECT LOCALIZED LUNG VENTILATION DISORDERS IN COMBINATION WITH CONVENTIONAL SPIROMETRY." Biomedical Engineering: Applications, Basis and Communications 27, no. 03 (2015): 1550029. http://dx.doi.org/10.4015/s1016237215500295.

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Conventional spirometry gives information on the overall ventilation of a person's lung; it cannot detect localized disorders in ventilation as occurring in pulmonary edema, pneumonia, tumor, TB, etc. Here we propose a new technique involving the recently developed focused impedance method (FIM) in combination with conventional spirometry to detect localized lung ventilation disorders. Electrical impedance of lung tissue changes as a function of air content and FIM provides a measurement of localized electrical impedance with sensitivity down to reasonable depths inside the body using a few su

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Vasyliv, S. S., V. S. Zhdanov, and M. V. Yevseyenko. "Determination of receiver consumption characteristics using computer simulation." Computer Modeling: Analysis, Control, Optimization 8, no. 2 (2020): 10–14. http://dx.doi.org/10.32434/2521-6406-2020-8-2-10-14.

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The problem of implementing the detonation mode of fuel combustion in thermal propulsion systems has been widely studied last decade. There are many works on fundamental and applied research on pulsating detonation. Solid propellant detonation engines can develop significant forces for a short time at low structural masses, and therefore they are ideal for auxiliary systems for the removal of separated rocket parts. In addition, detonation processes can be used to create control forces for correcting the trajectory of aircraft. All these facts determine the relevance of the area of work. For s

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