Results 41 to 50 of about 448,899 (312)

Design and fabrication of chemically robust three-dimensional microfluidic valves [PDF]

open access: yes, 2007
A current problem in microfluidics is that poly(dimethylsiloxane) (PDMS), used to fabricate many microfluidic devices, is not compatible with most organic solvents. Fluorinated compounds are more chemically robust than PDMS but, historically, it has been
Chen, Yan   +7 more
core   +2 more sources

Valve-in-Valve Transcatheter Aortic Valve Implantation for Degenerated Bioprosthetic Heart Valves

open access: yesJACC: Cardiovascular Interventions, 2011
We sought to analyze outcomes of patients with degenerated surgically implanted bioprosthetic heart valves undergoing valve-in-valve (viv) transcatheter aortic valve implantation (TAVI).Redo cardiac surgery for degenerated bioprosthetic heart valves is associated with increased risks, particular in elderly patients with comorbidities.
Eggebrecht, Holger   +15 more
openaire   +3 more sources

Research on nonlinear optical materials: an assessment. IV. Photorefractive and liquid crystal materials [PDF]

open access: yes, 1987
This panel considered two separate subject areas: photorefractive materials used for nonlinear optics and liquid crystal materials used in light valves.
Brody, P. S.   +8 more
core  

A convolutional neural network aided physical model improvement for AC solenoid valves diagnosis [PDF]

open access: yes, 2019
This paper focuses on the development of a physics-based diagnostic tool for alternating current (AC) solenoid valves which are categorized as critical components of many machines used in the process industry. Signal processing and machine learning based
Eryilmaz, Kerem   +5 more
core   +1 more source

Increased Risk of Sarcomas in Children With Congenital Anomalies: Findings From the Genetic Overlap Between Anomalies and Cancer in Kids (GOBACK) Registry Linkage Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters   +17 more
wiley   +1 more source

Sediment deposition model of grading electrode in water cooling circuit of HVDC converter valve

open access: yesThe Journal of Engineering, 2019
The converter valve is one of the core equipment in high-voltage direct current (HVDC) system, and the cooling system is often used for heat dissipation.
Xiaoning Song   +5 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Extended temperature range rocket injector [PDF]

open access: yes, 1991
A rocket injector is provided with multiple sets of manifolds for supplying propellants to injector elements. Sensors transmit the temperatures of the propellants to a suitable controller which is operably connnected to valves between these manifolds and
Schneider, Steven J.
core   +1 more source

Impact of Asymptomatic Intracranial Hemorrhage on Outcome After Endovascular Stroke Treatment

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Endovascular treatment (EVT) achieves high rates of recanalization in acute large‐vessel occlusion (LVO) stroke, but functional recovery remains heterogeneous. While symptomatic intracranial hemorrhage (sICH) has been well studied, the prognostic impact of asymptomatic intracranial hemorrhage (aICH) after EVT is less certain ...
Shihai Yang   +22 more
wiley   +1 more source

Design and control of load simulator for throttling system of large hydraulic press

open access: yesThe Journal of Engineering, 2018
In order to improve the precision of the extrusion speed control of the large hydraulic press and improve the quality of the extruding work piece, an experimental system was designed to simulate the throttle system of the hydraulic press.
Le Zeng   +3 more
doaj   +1 more source

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