Results 31 to 40 of about 6,564 (167)

Optical communications system Patent [PDF]

open access: yes, 1969
Specifications and drawings for semipassive optical communication ...
Thomas, N. E.
core   +1 more source

Artificial Cilia for 360° Direction‐Sensitive Acoustic Sensing Through Additive Micromanufacturing

open access: yesAdvanced Electronic Materials, EarlyView.
An artificial cilium using additive micro‐manufacturing technologies for direction‐sensitive acoustic sensing is prepared, including electrospray and 3D micro‐direct ink writing. Two resonances are achieved on a cilium by printing two independent electrode‐to‐electrode interconnect bridges.
Yikang Li   +14 more
wiley   +1 more source

Low frequency acoustics in solid $^4$He at low temperature

open access: yes, 2009
The elastic properties of hcp $^4$He samples have been investigated using low frequency (20 Hz to 20 kHz) high sensitivity sound transducers. In agreement with the findings of other workers, most samples studied grew very significantly stiffer at low ...
A. Penzev   +4 more
core   +1 more source

Shape Morphing Programmable Systems for Enhanced Control in Low‐Velocity Flow Applications

open access: yesAdvanced Intelligent Systems, EarlyView.
A soft, Lorentz‐force‐driven programmable surface enables rapid, reversible shape morphing for active flow control. Integrating experimental, numerical, and modeling approaches, the system demonstrates effective modulation of near‐wall flow and momentum at low velocities, offering pathways for bio‐inspired aerodynamics and natural locomotion emulation.
Jin‐Tae Kim   +16 more
wiley   +1 more source

Revisiting paravertebral muscles in European rabbits (Oryctolagus cuniculus) and European brown hares (Lepus europaeus) (Leporidae; Lagomorpha)

open access: yesThe Anatomical Record, EarlyView.
Abstract Domesticated European rabbits (Oryctolagus cuniculus) have long been chosen as laboratory model organisms. Despite this, there has been no definitive study of the vertebral musculature of wild rabbits. Relevant descriptions of well‐studied veterinary model mammals (such as dogs) are generally applicable, but not appropriate for a species ...
Nuttakorn Taewcharoen   +3 more
wiley   +1 more source

The stethoscope [PDF]

open access: yes, 2007
Stetho·scope. Function: noun : an instrument used to detect and study sounds produced in the body that are conveyed to the ears of the listener through rubber tubing connected with a usually cupshaped piece placed upon the area to be examined.peer ...
Mangion, Kenneth
core  

Harvesting AAV by tangential flow filtration using reverse asymmetric membranes

open access: yesBiotechnology Progress, EarlyView.
Abstract Efficient bioreactor clarification for harvesting virus particles is often challenging. Tangential flow filtration is attractive as it can be easily adapted for batch and perfusion operations. Here the feasibility of using reverse asymmetric hollow fiber membranes, where the more open support structure faces the feed stream, has been ...
Xiaolei Hao   +5 more
wiley   +1 more source

Operando Acoustic Spectroscopy for Optimizing Gas Evolution In Hydrogen Evolution Reaction and the Oxygen Evolution Reaction Processes

open access: yesChemElectroChem, EarlyView.
The graphic enables the visualization of the changes in audible frequency within the cell when the potential is applied at 30 s. The change in frequency is related to the gas volume produced during electrolysis. The gas changes the compressibility of the electrolyte slowing down the speed of sound.
Christopher Kent   +4 more
wiley   +1 more source

The role of intra‐abdominal pressure and point of care ultrasound to guide decongestive therapies in acute heart failure

open access: yesESC Heart Failure, EarlyView.
The ABDOPOCUS‐HF trial is a randomized, single‐blind, low‐intervention clinical trial (n = 168) investigating the utility of intra‐abdominal pressure (IAP) and point of care ultrasound to guide decongestive therapies during the first 72 hours after admission for acute heart failure.
C. Josa‐Laorden   +20 more
wiley   +1 more source

Visual Patterns of Diaphragmatic Motion in Acute Respiratory Failure: A Prospective Pilot Study

open access: yesJournal of Clinical Ultrasound, Volume 53, Issue 3, Page 421-428, March/April 2025.
In this prospective bicentric study, we studied the relationship between the appearance of diaphragmatic motion and the etiological diagnosis of patients admitted to the emergency department with ARF. We observed a different visual pattern in patients with pneumonia. This is an interesting result as it allows the diagnosis of pneumonia without the need
Thibaut Markarian   +7 more
wiley   +1 more source

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