Results 261 to 270 of about 527,015 (300)

Molecular Springs: Integration of Complex Dynamic Architectures into Functional Devices

Angewandte Chemie International Edition, 2020
AbstractMolecular/supramolecular springs are artificial nanoscale objects possessing well‐defined structures and tunable physicochemical properties. Like a macroscopic spring, supramolecular springs are capable of switching their nanoscale conformation as a response to external stimuli by undergoing mechanical spring‐like motions.
Chang‐Bo Huang, Artur Ciesielski, Paolo Samorì   +2 more
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Spring over muscle (SOM) actuator for rehabilitation devices

The 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2005
For people affected by stroke, frequent physical therapy has been shown to be an effective form of rehabilitation. To this goal, several home therapy devices have been developed. Many of these devices may benefit from the use of a bidirectional pneumatic muscle actuator.
Kevin W. Hollander, Kartik Bharadwaj, Thomas G. Sugar, C.A. Mathis   +3 more
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Certain problems in the theory of spring weighing devices [PDF]

Measurement Techniques, 1967
1. In order to raise the operating speed of spring weighing devices and reduce their dynamic errors it is necessary to raise the angular frequency of their natural oscillations and produce a moving system with a minimum weight and its natural oscillations damping factor equal to the angular frequency of these oscillations (λ=ω0). 2.
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Spring Suction Device for Pulmonary Needle Aspiration Biopsy

Radiology, 1971
A simple spring attachment to provide automatic suction during percutaneous needle lung aspiration biopsy is described. The spring device provides continuous suction while the needle and syringe are rotated to core the lesion. Its use is suggested to facilitate manipulation of the needle, particularly for those who may have difficulty in maintaining ...
Birnbaum W, Jay Gordonson, Sargent En
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A Spring-Loaded Constant Force Exercise Device

Advances in Bioengineering, 2001
Abstract Bone mineral density loss has been observed in astronauts who have spent a significant amount of time in a micro-gravity environment [1]. The lack of mechanical stress placed on the bones while in this environment is a major factor in the decrease in bone mineral density.
Audrey S. House, Joey K. Parker, Beth A. Todd, Matthew J. Chatham, Jenny L. Taylor   +4 more
openaire   +2 more sources

Insertion Devices for Spring-8 Upgrade Project

2016
In the upcoming major upgrade project of SPring-8 (SPring-8-II) planned in the early 2020's, the electron energy will be reduced from 8 GeV to 6 GeV and the straight sections will be shortened by nearly 2 m to accommodate more magnets, for the purpose of reducing the emittance down to around 100 pm.rad.
T. Bizen, Ryota Kinjo, Haruhiko Ohashi, Teruaki Hasegawa, Hikaru Kishimoto, Akihiro Kagamihata, T. Seike, Takashi Tanaka, Shigeru Yamamoto   +8 more
openaire   +2 more sources

Device for the determination of spring constants of atomic force microscope cantilevers and micromachined springs

Review of Scientific Instruments, 2002
We describe a simple device for the calibration of atomic force microscope cantilevers and micromachined springs. The device measures the deflection of the cantilevers in response to known forces that are derived from calibrated macroscopic cantilever springs. We have used the device to determine spring constants from several N/m to tenths of μN/m.
S. K. Jericho, M. H. Jericho
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A suture-retaining spring device to assist in microvascular procedures [PDF]

European Journal of Plastic Surgery, 2008
Microvascular anastomosis needs a skilled assistant. A simple spring device subtracts this need. This device is an “add-on” to the conventional vascular clamp. It helps the surgeon to perform the anastomosis alone by lifting up the anterior wall away from the posterior wall.
Vipul Kumar, Prashantha Kesari, Mukund Jagannathan   +2 more
openaire   +1 more source

Research of Design Synthesis for MEMS Device of Serpentine Spring

Advanced Materials Research, 2014
The design synthesis of MEMS device is an inverse problem of the MEMS analysis. The performance analysis equations are transformed to the performance design equations according to the predetermined performance. The Direct Solution Algorithm derived by the Newton iterative method is used to solve the nonlinear performance design equations, and then the ...
Hu Qi Wang, Yang Lu, Hai Zhao He
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Spring loaded pressure device?essential for auricular keloid

European Journal of Plastic Surgery, 2003
A pressure clip is a commonly used method for treating keloid scar but none seems to produce sustainable pressure. We have constructed a pressure clip with an adjustable spring mechanism that allows the pressure load to be varied. The design of the clip also maintained its position while compressing the keloid scar.
M. Ho-Asjoe, R. Chooneea, P. E. M. Butler   +2 more
openaire   +2 more sources