Simulation analysis of P-type water seal considering viscoelasticity of material

The low viscosity of water makes the film of water in water hydraulic axial piston pump slipper friction pairs very thin, and which can be broken easily. By simulation, analysis, experiment, and comparison, the lubrication characteristics of the new-type water slipper friction pairs, especially its anti-turnover ability, which directly affects the working reliability of the water film, are examined by a study of water's flow pattern. On the basis of the idea of multi-groups of damping and supporting cavity, the independent stiffness adjustment is used to improve the anti-turnover ability of the water slipper friction pairs. Furthermore, on the basis of the N-S equations, the fluid lubrication characteristics of water hydraulic clearance friction pairs are examined more thoroughly and accurately, taking into account the inertia, the surface roughness etc, so as to revise the calculation and analysis results of water hydraulic slipper lubrication characteristics put forth by classical theory.

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Research on frog-inspired swimming robot driven by pneumatic muscles

Robotica ◽

10.1017/s0263574721001247 ◽

2021 ◽

pp. 1-11

Author(s):

Jizhuang Fan ◽

Shuqi Wang ◽

Yi Wang ◽

Ge Li ◽

Jie Zhao ◽

...

Keyword(s):

Control System ◽

Optimization Design ◽

Simulation Analysis ◽

Structural Characteristics ◽

Structure Design ◽

The Body ◽

Turning Angle ◽

Pneumatic Muscles ◽

Turning Radius ◽

Water Seal

Abstract This article designs a frog-inspired swimming robot based on pneumatic muscles. The musculoskeletal characteristics of the frog are refined and used as the basis for the design of the robot joint structure and movement mode. The posture adjustment module, joint water seal, and power system are designed to meet the robot’s motion requirements, and the structure optimization design of the robot is completed by combining simulation analysis. The body length of the robot is about 710 mm, and the overall mass is 10 kg. Combining the structural characteristics of the robot, the control system is built to realize the frog-like motion. The robot’s propulsion speed is about 0.6 m/s, the propulsion distance reaches 2.4 m, the turning angle is 30°, and the turning radius is 0.6 m. The prototype experiment verifies the rationality of the frog-inspired swimming robot structure design and the reliability of the control system and water seal.

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tilted out (type) water seal(ing)

Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik ◽

10.1007/978-3-642-41714-6_201345 ◽

2014 ◽

pp. 1400-1400

Keyword(s):

Type Water ◽

Water Seal

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Interface morphology of thermal oxide grown on polycrystalline silicon by different processes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100131619 ◽

1992 ◽

Vol 50 (2) ◽

pp. 1396-1397

Author(s):

H. Yen ◽

E. P. Kvam ◽

R. Bashir ◽

S. Venkatesan ◽

G. W. Neudeck

Keyword(s):

Integrated Circuits ◽

Polycrystalline Silicon ◽

Silicon Films ◽

Interface Morphology ◽

Oxide Interface ◽

Poly Silicon ◽

Thermal Oxide ◽

Grain Orientations ◽

Polycrystalline Silicon Films ◽

P Type

Polycrystalline silicon, when highly doped, is commonly used in microelectronics applications such as gates and interconnects. The packing density of integrated circuits can be enhanced by fabricating multilevel polycrystalline silicon films separated by insulating SiO2 layers. It has been found that device performance and electrical properties are strongly affected by the interface morphology between polycrystalline silicon and SiO2. As a thermal oxide layer is grown, the poly silicon is consumed, and there is a volume expansion of the oxide relative to the atomic silicon. Roughness at the poly silicon/thermal oxide interface can be severely deleterious due to stresses induced by the volume change during oxidation. Further, grain orientations and grain boundaries may alter oxidation kinetics, which will also affect roughness, and thus stress.Three groups of polycrystalline silicon films were deposited by LPCVD after growing thermal oxide on p-type wafers. The films were doped with phosphorus or arsenic by three different methods.

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Determination of arsenic atom distribution arsenic doped silicon using HOLZ-line analysis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100167342 ◽

1996 ◽

Vol 54 ◽

pp. 976-977

Author(s):

Y. Kikuchi ◽

N. Hashikawa ◽

F. Uesugi ◽

E. Wakai ◽

K. Watanabe ◽

...

Keyword(s):

Inelastic Scattering ◽

Zone Axis ◽

Experimental Result ◽

Background Intensity ◽

Crystal Thickness ◽

Arsenic Atom ◽

Doped Silicon ◽

P Type ◽

Line Analysis

In order to measure the concentration of arsenic atoms in nanometer regions of arsenic doped silicon, the HOLZ analysis is carried out underthe exact [011] zone axis observation. In previous papers, it is revealed that the position of two bright lines in the outer SOLZ structures on the[011] zone axis is little influenced by the crystal thickness and the background intensity caused by inelastic scattering electrons, but is sensitive to the concentration of As atoms substitutbnal for Siatomic site.As the result, it becomes possible to determine the concentration of electrically activated As atoms in silicon within an observed area by means of the simple fitting between experimental result and dynamical simulatioan. In the present work, in order to investigate the distribution of electrically activated As in silicon, the outer HOLZ analysis is applied using a nanometer sized probe of TEM equipped with a FEG.Czodiralsld-gown<100>orientated p-type Si wafers with a resistivity of 10 Ώ cm are used for the experiments.TheAs+ implantation is performed at a dose of 5.0X1015cm-2at 25keV.

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Investigating the functional link between TMEM165 and SPCA1

Biochemical Journal ◽

10.1042/bcj20190488 ◽

2019 ◽

Vol 476 (21) ◽

pp. 3281-3293 ◽

Cited By ~ 2

Author(s):

Elodie Lebredonchel ◽

Marine Houdou ◽

Hans-Heinrich Hoffmann ◽

Kateryna Kondratska ◽

Marie-Ange Krzewinski ◽

...

Keyword(s):

Subcellular Localization ◽

Complete Loss ◽

Protein Family ◽

Uncharacterized Protein ◽

Functional Link ◽

P Type

TMEM165 was highlighted in 2012 as the first member of the Uncharacterized Protein Family 0016 (UPF0016) related to human glycosylation diseases. Defects in TMEM165 are associated with strong Golgi glycosylation abnormalities. Our previous work has shown that TMEM165 rapidly degrades with supraphysiological manganese supplementation. In this paper, we establish a functional link between TMEM165 and SPCA1, the Golgi Ca2+/Mn2+ P-type ATPase pump. A nearly complete loss of TMEM165 was observed in SPCA1-deficient Hap1 cells. We demonstrate that TMEM165 was constitutively degraded in lysosomes in the absence of SPCA1. Complementation studies showed that TMEM165 abundance was directly dependent on SPCA1's function and more specifically its capacity to pump Mn2+ from the cytosol into the Golgi lumen. Among SPCA1 mutants that differentially impair Mn2+ and Ca2+ transport, only the Q747A mutant that favors Mn2+ pumping rescues the abundance and Golgi subcellular localization of TMEM165. Interestingly, the overexpression of SERCA2b also rescues the expression of TMEM165. Finally, this paper highlights that TMEM165 expression is linked to the function of SPCA1.

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Structural dynamics of P-type ATPase ion pumps

Biochemical Society Transactions ◽

10.1042/bst20190124 ◽

2019 ◽

Vol 47 (5) ◽

pp. 1247-1257 ◽

Cited By ~ 17

Author(s):

Mateusz Dyla ◽

Sara Basse Hansen ◽

Poul Nissen ◽

Magnus Kjaergaard

Keyword(s):

Structural Dynamics ◽

Single Molecule ◽

New Technologies ◽

Atp Hydrolysis ◽

Resonance Energy Transfer ◽

Resonance Energy ◽

Time Resolved ◽

Dynamics Simulations ◽

Types Of Information ◽

P Type

Abstract P-type ATPases transport ions across biological membranes against concentration gradients and are essential for all cells. They use the energy from ATP hydrolysis to propel large intramolecular movements, which drive vectorial transport of ions. Tight coordination of the motions of the pump is required to couple the two spatially distant processes of ion binding and ATP hydrolysis. Here, we review our current understanding of the structural dynamics of P-type ATPases, focusing primarily on Ca2+ pumps. We integrate different types of information that report on structural dynamics, primarily time-resolved fluorescence experiments including single-molecule Förster resonance energy transfer and molecular dynamics simulations, and interpret them in the framework provided by the numerous crystal structures of sarco/endoplasmic reticulum Ca2+-ATPase. We discuss the challenges in characterizing the dynamics of membrane pumps, and the likely impact of new technologies on the field.

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