Results 261 to 270 of about 3,603,562 (358)

A Superlubricated Magnetically Steerable Microcatheter with Integrated Optical and Fluidic Channels

open access: yesAdvanced Robotics Research, EarlyView.
A magnetically steerable microcatheter with integrated optical and fluidic channels is developed for multifunctional navigation in tortuous anatomical environments. A surface‐grafted hydrogel coating enables low‐friction actuation. The device demonstrates stable light and fluid delivery during magnetic manipulation, offering a compact platform for ...
Yuntian Du   +5 more
wiley   +1 more source

Ultrathin Graphene Strain Sensor Arrays for High‐Sensitivity Multifunctional Sensing with Millimeter‐Scale Resolution

open access: yesAdvanced Sensor Research, EarlyView.
This study reports an ultrathin graphene‐based strain sensor array fabricated on a 5 µm polyimide substrate. The array achieves millimeter‐scale spatial resolution (≈70 devices cm−2), high sensitivity with a gauge factor of 144, and reliable durability over 5000 cycles.
Wenchao Luo   +10 more
wiley   +1 more source

The effects of progesterone supplementation in pregnancies assessed by doppler ultrasound: a systematic review of maternal and perinatal outcomes. [PDF]

open access: yesEur J Med Res
Khanjani S   +9 more
europepmc   +1 more source

Regulation of Human Umbilical Artery Contractility By Different Serotonin and Histamine Receptors

open access: green, 2009
António José Santos-Silva   +3 more
openalex   +2 more sources

Endarterectomy for asymptomatic carotid artery stenosis

open access: yesBritish medical journal, 1995
C. Irvine   +3 more
semanticscholar   +1 more source

Research Progress in Wearable Microneedle Sensors for Health Analysis

open access: yesAdvanced Sensor Research, EarlyView.
Wearable biosensors are transforming personal healthcare by enabling minimally invasive, molecular‐level monitoring. Emerging electrochemical microneedle sensors can detect analytes in interstitial fluid, enabling painless extraction and real‐time tracking.
Adnan Zameer   +3 more
wiley   +1 more source

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