Compact Claude cycle refrigerator for laboratory use [PDF]
, 1983 A Claude cycle refrigerator with a three stage reciprocating expansion engine is described. Instead of a cam mechanism, valves are driven directly by magnetic solenoids operated by means of a micro processor control system.
Baba, Y. +5 more
core +1 more source
Time‐Dependent Debridement Quality of the SAF Infinitum System in Flat‐Shaped Root Canals
International Endodontic Journal, EarlyView.ABSTRACT Aim To evaluate the shaping ability, debris removal efficiency and morphological alterations induced by the SAF Infinitum system during progressive instrumentation of flat‐shaped root canals of mandibular incisors. Methodology Twelve extracted mandibular incisors with flat‐shaped canals were selected using micro‐CT and instrumented with 1.5‐mm
Marco A. Versiani +7 more
wiley +1 more source
Generative Adversarial Networks Selection Approach for Extremely Imbalanced Fault Diagnosis of Reciprocating Machinery [PDF]
, 2019 At present, countless approaches to fault diagnosis in reciprocating machines have been proposed, all considering that the available machinery dataset is in equal proportions for all conditions.
Cabrera, Diego +6 more
core
Journal of Esthetic and Restorative Dentistry, EarlyView.ABSTRACT Objective Polyethylene fiber (PF) and fiberglass (FG) posts have been recommended for intraradicular anchorage when there is a significant loss of coronal structure. However, few studies have evaluated their performance in anterior teeth combined with direct restorations as an alternative to single crowns.
Chiu Tzyy Haur +4 more
wiley +1 more source
Automated valve fault detection based on acoustic emission parameters and support vector machine
Alexandria Engineering Journal, 2018 Reciprocating compressors are one of the most used types of compressors with wide applications in industry. The most common failure in reciprocating compressors is always related to the valves.
Salah M. Ali +3 more
doaj +1 more source
Fault Diagnosis Method Based on AUPLMD and RTSMWPE for a Reciprocating Compressor Valve. [PDF]
Entropy (Basel), 2022 Song M, Wang J, Zhao H, Wang X.
europepmc +1 more source
New opportunities for future, small, General-Aviation Turbine Engines (GATE) [PDF]
, 1980 The results of four independent contracted studies to explore the opportunities for future small turbine engines are summarized in a composite overview.
Strack, W. C.
core +1 more source
Charge‐Induced Morphing Gels for Bioinspired Actuation
Advanced Functional Materials, Volume 36, Issue 19, 5 March 2026.This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu +4 more
wiley +1 more source
Advanced General Aviation Turbine Engine (GATE) study [PDF]
The small engine technology requirements suitable for general aviation service in the 1987 to 1988 time frame were defined. The market analysis showed potential United States engines sales of 31,500 per year providing that the turbine engine sales price ...
Benstein, E. H., Smith, R.
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Experimental Investigation and Numerical Modelling of Dynamic Behaviour of Screw Compressor Plant [PDF]
, 2013 An experimental and analytical study of screw compressor operation under unsteady conditions has been carried out. For this purpose a one dimensional model of the processes within a compressor was extended to include other plant components, including ...
Chukanova, E. +3 more
core +1 more source