Results 101 to 110 of about 35,267 (307)

High-frequency ultrasonic speckle velocimetry in sheared complex fluids

open access: yes, 2003
High-frequency ultrasonic pulses at 36 MHz are used to measure velocity profiles in a complex fluid sheared in the Couette geometry. Our technique is based on time-domain cross-correlation of ultrasonic speckle signals backscattered by the moving medium.
A. Colin   +47 more
core   +3 more sources

Spin Hall Nano‐Antenna

open access: yesAdvanced Science, EarlyView.
ABSTRACT The spin Hall effect is a well‐known phenomenon in spintronics that has found numerous applications in digital electronics (memory and logic), but relatively few in analog electronics. Practically the only analog application in widespread use is the spin Hall nano‐oscillator (SHNO) that delivers a high frequency alternating current or voltage ...
Raisa Fabiha   +6 more
wiley   +1 more source

Finger pad friction and tactile perception of laser treated, stamped and cold rolled micro-structured stainless steel sheet surfaces

open access: yesFriction, 2017
Tactile perception is a complex system, which depends on frictional interactions between skin and counter-body. The contact mechanics of tactile friction is governed by many factors such as the state and properties of skin and counter-body.
S. Zhang   +6 more
doaj   +1 more source

Rotary Electromechanical System Integrating Non‐Reciprocal Memory and Combinational Logic

open access: yesAdvanced Science, EarlyView.
Rotational bistability, interfaced through a conductive network with switchable contacts, unifies logic operations and mechanical memory within a rotary electromechanical system. The author demonstrates how serially coupled configurations of rotationally bistable modules enable reprogrammable sequential logic governed by mechanical state transition and
Shujia Chen, Don Straney, Damiano Pasini
wiley   +1 more source

The effects of two preseason periodizations on peak torque of knee extensors and flexors of a Polish first league soccer team

open access: yesScientific Reports
The study aimed to compare the effectiveness of two resistance training load progression methods—linear and step—on peak torque and power of knee extensors and flexors during the preseason of a Polish First League soccer team across two seasons ...
Miłosz Drozd   +6 more
doaj   +1 more source

Design, Development and Calibration of a Drive Wheel Torque Transducer for an Agricultural Tractor [PDF]

open access: yes, 2003
An appropriate transducer unit for measuring the drive wheel torque of a tractor was designed, developed and calibrated. The unit adopts a design having an extension shaft mounted in between the rear wheel axle flange and rear wheel rim of a tractor ...
Abdelmotalab Fadlelmola, Kheiralla   +3 more
core  

Repeated Disuse Atrophy Imprints a Molecular Memory in Skeletal Muscle: Transcriptional Resilience in Young Adults and Susceptibility in Aged Muscle

open access: yesAdvanced Science, EarlyView.
Repeated disuse imprints a molecular memory in skeletal muscle, conferring transcriptional resilience in young adults but exaggerated susceptibility in aged muscle, driven by epigenetic regulation of aerobic metabolism, mitochondrial and NAD+ pathways.
Daniel C. Turner   +14 more
wiley   +1 more source

Glucuronolactone Promotes Mucin Sulfation to Alleviate Deoxynivalenol‐Induced Intestinal Injury via Microbiota‐Dependent and ‐Independent AHR Activation

open access: yesAdvanced Science, EarlyView.
Glucuronolactone (GLU) as a natural metabolite of glucose, increases Lactobacillus amylovorus abundance and luminal IAA level to activate AHR signaling. In addition, GLU itself can directly elevate AHR signaling activity independently of microbiota and IAA.
Chenbin Cui   +8 more
wiley   +1 more source

Analytical Method of Malculation of the Current and Torque a Reluctance Stepper Motor via Fourier Series

open access: yesAdvances in Electrical and Electronic Engineering, 2008
Reluctance stepper motors are becoming to be very attractive transducer to conversion of electric signal to the mechanical position. Due to its simple construction is reluctance machine considered a very reliable machine which not requiring any ...
Pavel Zaskalicky, Maria Zaskalicka
doaj  

Experimental and Numerical Investigations of Mixing Performance of Mixing Agitators of Deep Cement Mixing Ships

open access: yesBuildings
Recent decades have witnessed the increasing usage of deep cement mixing (DCM) mixers in the field of marine infrastructure construction. The mixing performance, including the torque history, can be helpful for structural safety evaluation, design, and ...
Pingshan Chen   +6 more
doaj   +1 more source

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