Ultrasonically Activated Diffusion Bonding for Fluidic Control Assembly

1979 ◽  
Author(s):  
Howard A. Scheetz ◽  
Paul L. Coppa ◽  
Janet Devine
Keyword(s):  
Diffusion Bonding ◽  
Control Assembly ◽  
Fluidic Control

Swallow Pattern Generator Reconfiguration of the Respiratory Neural Network

2009 ◽  
Vol 18 (1) ◽  
pp. 3-12
Author(s):  
Andrea Vovka ◽  
Paul W. Davenport ◽  
Karen Wheeler-Hegland ◽  
Kendall F. Morris ◽  
Christine M. Sapienza ◽  
...  
Keyword(s):  
Behavioral Control ◽  
Upper Airway ◽  
Pattern Generator ◽  
Breathing Patterns ◽  
Motor Patterns ◽  
Control Assembly ◽  
Pharyngeal Swallow ◽  
Laryngeal Vestibule ◽  
Lower Airways ◽  
Swallow Apnea

Abstract When the nasal and oral passages converge and a bolus enters the pharynx, it is critical that breathing and swallow motor patterns become integrated to allow safe passage of the bolus through the pharynx. Breathing patterns must be reconfigured to inhibit inspiration, and upper airway muscle activity must be recruited and reconfigured to close the glottis and laryngeal vestibule, invert the epiglottis, and ultimately protect the lower airways. Failure to close and protect the glottal opening to the lower airways, or loss of the integration and coordination of swallow and breathing, increases the risk of penetration or aspiration. A neural swallow central pattern generator (CPG) controls the pharyngeal swallow phase and is located in the medulla. We propose that this swallow CPG is functionally organized in a holarchical behavioral control assembly (BCA) and is recruited with pharyngeal swallow. The swallow BCA holon reconfigures the respiratory CPG to produce the stereotypical swallow breathing pattern, consisting of swallow apnea during swallowing followed by prolongation of expiration following swallow. The timing of swallow apnea and the duration of expiration is a function of the presence of the bolus in the pharynx, size of the bolus, bolus consistency, breath cycle, ventilatory state and disease.

Fluidic Control of Asymmetric Forces on a Body of Revolution

2008 ◽  
Author(s):  
Philip Abramson ◽  
Bojan Vukasinovic ◽  
Ari Glezer
Keyword(s):  
Body Of Revolution ◽  
Fluidic Control

Re-Programming Hydrogel Properties using a Fuel-driven Reaction Cycle

2019 ◽  
Author(s):  
Nishant Singh ◽  
Bruno Lainer ◽  
Georges Formon ◽  
Serena De Piccoli ◽  
Thomas Hermans
Keyword(s):  
Methionine Oxidation ◽  
Guanosine Triphosphate ◽  
Control Reaction ◽  
Reaction Cycle ◽  
Materials Properties ◽  
Assembly Kinetics ◽  
Control Assembly ◽  
Indispensable Tool ◽  
Reaction Cycles ◽  
Non Equilibrium

Nature uses catalysis as an indispensable tool to control assembly and reaction cycles in vital non-equilibrium supramolecular processes. For instance, enzymatic methionine oxidation regulates actin (dis)assembly, and catalytic guanosine triphosphate hydrolysis is found in tubulin (dis)assembly. Here we present a completely artificial reaction cycle which is driven by a chemical fuel that is catalytically obtained from a ‘pre-fuel’. The reaction cycle controls the disassembly and re-assembly of a hydrogel, where the rate of pre-fuel turnover dictates the morphology as well as the mechanical properties. By adding additional fresh aliquots of fuel and removing waste, the hydrogels can be re-programmed time after time. Overall, we show how catalysis can control fuel generation to control reaction / assembly kinetics and materials properties in life-like non-equilibrium systems.

316L Stainless Steel Diffusion Bonding Optimized Parameters

2017 ◽  
Author(s):  
Gustavo Nuernberg ◽  
Grégori Rosinski ◽  
Priscila Gonçalves ◽  
Marcus Mortean ◽  
Regis Henrique Goncalves e Silva ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Diffusion Bonding ◽  
316L Stainless Steel

Effect of Ni interlayer on diffusion bonding of a W alloy and a Ta alloy

2017 ◽  
Vol 59 (9) ◽  
pp. 744-748
Author(s):  
Jian Zhang ◽  
Ruxia Liu ◽  
Qinqin Wei ◽  
Guoqiang Luo ◽  
Qiang Shen ◽  
...  
Keyword(s):  
Diffusion Bonding ◽  
Ni Interlayer

ELEMENTS DIFFUSION LAW OF DD407/FGH95 DIFFU-SIGN BONDING UNDER HOT ISOSTATIC PRESSINGI. Building Diffusion Bonding Model

2013 ◽  
Vol 49 (9) ◽  
pp. 1041
Author(s):  
Yao YAO ◽  
Jianshui YE ◽  
Jianxin DONG ◽  
Zhihao YAO ◽  
Maicang ZHANG ◽  
...  
Keyword(s):  
Diffusion Bonding
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