scholarly journals A new stocking compression system with a low well-defined resting pressure and a high working pressure

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Andreas Nilsson ◽  
Torbjörn Lundh
Keyword(s):  
Working Pressure ◽  
Compression System ◽  
Resting Pressure ◽  
High Working Pressure

Not available

scholarly journals An innovative compression system providing low, sustained resting pressure and high, efficient working pressure

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Josefin Damm ◽  
Torbjörn Lundh ◽  
Hugo Partsch ◽  
Giovanni Mosti
Keyword(s):  
Working Pressure ◽  
Compression System ◽  
High Efficient ◽  
Resting Pressure

Not available

Compression therapy of leg ulcers with PAOD

2014 ◽  
Vol 29 (1_suppl) ◽  
pp. 7-12 ◽  
Author(s):  
Andrea Ladwig ◽  
Hermann Haase ◽  
Jens Bichel ◽  
Jan Schuren ◽  
Michael Jünger
Keyword(s):  
Compression Therapy ◽  
Tolerability Profile ◽  
Skin Damage ◽  
Working Pressure ◽  
Good Tolerability ◽  
Clinical Safety ◽  
Compression System ◽  
Resting Pressure ◽  
Safety Parameters ◽  
Peripheral Arterial

Objectives: To assess the clinical safety of a new short-stretch 2-layer compression system (3Mtm Cobantm 2 Lite) in patients with peripheral arterial occlusive disease (PAOD). This system combines a low resting pressure with a high working pressure. Methods: A pilot study was performed in 15 subjects with moderate PAOD, i.e. an ABPI of 0.5-0.8. Co-existing chronic venous insufficiency or leg ulcer was not mandatory. All subjects received the compression system which was reapplied at each study visit (days 1, 2, 3, 4, 7, 10, 14). The safety parameters were: sub-bandage pressure immediately after application, pressure-related skin damage, hypoxia-related pain, and adverse events. A product comfort questionnaire was completed at the last visit. Results: The average sub-bandage pressure of 30 mmHg defined by the protocol was achieved. No pressure-related skin damage or hypoxia-related pain was found. The reported adverse device effects were as expected for compression therapies, including dry skin and pruritus. The product comfort questionnaire completed by the subjects showed a good tolerability profile. Conclusion: The short-stretch 2-layer compression system (3Mtm Cobantm 2 Lite) was safe and well tolerated in subjects with moderate PAOD.

Experimental and theoretical studies on the pressure fluctuation of an internal gear pump with a high pressure

2018 ◽  
Vol 233 (3) ◽  
pp. 987-996 ◽  
Author(s):  
Ying-Yuan Liu ◽  
Yi-Ran Li ◽  
Le-Qin Wang
Keyword(s):  
Pressure Pulsation ◽  
Rotational Frequency ◽  
Gear Pump ◽  
Operating Pressure ◽  
Pressure Pulsations ◽  
Working Pressure ◽  
High Rotational Speed ◽  
Gear Ring ◽  
Internal Gear ◽  
High Working Pressure

In this paper, the flow ripple equation is derived to analyze the effect of working condition on pressure pulsations of an internal gear pump. Results indicate that working pressure has a significant effect on pressure fluctuation of the internal gear pump, while the rotating speed has a complex influence on the pressure pulsation behavior. Then, pressure pulsations of the internal gear pump under different working conditions are discussed by experimental investigations. Results show that the internal gear pump taken for analysis has a low-pressure pulsation at a high working pressure and a relatively high rotational speed. Regarding the frequency spectrum of the pressure pulsation, the dominant frequency is Z* fn, i.e. the product of the tooth number of the driving gear (gear shaft) and its rotational frequency for many working conditions, caused by the inevitable unsteady discharge process of gear pumps. It transforms to the rotational frequency of the gear shaft ( fn) for a high rotational speed or a high operating pressure, but to the rotating frequency of the internal gear ring (2/3 fn) only for a high operating pressure. The occurrence of the two frequencies (2/3 fn and fn) may result from the deformation of the gear ring and the gear shaft under the unbalanced radial forces caused by a high working pressure. Moreover, the frequency spectrum of the inlet pressure pulsation presents some differences from that of the outlet pressure pulsation. This is because the inlet pressure may be influenced by cavity generated at the suction side of the pump.

High-Working-Pressure Sputtering of ZnO for Stable and Efficient Perovskite Solar Cells

2019 ◽  
Vol 1 (3) ◽  
pp. 389-396 ◽  
Author(s):  
Abhishek Thote ◽  
Il Jeon ◽  
Hao-Sheng Lin ◽  
Sergei Manzhos ◽  
Takafumi Nakagawa ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Working Pressure ◽  
High Working Pressure

Stresses in Amorphous Gd-Fe Alloy Thin Films Deposited by Magnetron Sputtering

1990 ◽  
Vol 188 ◽  
Author(s):  
Zhi-Feng Zhou ◽  
Qi-Gang Zhou ◽  
Yu-Dian Fan
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Compressive Stress ◽  
Bias Voltage ◽  
Negative Bias ◽  
Negative Bias Voltage ◽  
Working Pressure ◽  
Planar Magnetron ◽  
Very High ◽  
High Working Pressure

ABSTRACTAmorphous Gd-Fe alloy thin films were made by D.C. planar magnetron sputtering under various deposition conditions (e.g., film thickness, composition, working pressure of Ar, negative bias voltage and deposition rate). The stress, the film composition and the content of entrapped Ar in the films were measured respectively. The experimental results showed that in this case the working pressure of Ar and the negative bias voltage did not change the composition of the films, and the stresses were all compressive except for the films deposited in a very high working pressure of Ar. The origin of the compressive stress can be attributed to the atomic peening effect produced by fast neutral working gas atoms rebounded from the sputtering target. The magnitude of the compressive stress depends not only on the amount of Ar atoms incorporated in the films but also on the film microstructure such as the packing density.

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