Results 71 to 80 of about 177,345 (263)

Cisternal puncture and cervical puncture: current uses and historical review

open access: yesRevista Mexicana de Neurociencia
A 61-year-old female diagnosed with neurocysticercosis was evaluated in the interventional neuroradiology department. Cerebrospinal fluid by cervical puncture was requested by the attending physician, and informed consent was obtained.
Pablo Martínez-Arellano   +3 more
doaj  

Precision enhancement of epidural force-sensing needle with machine learning

open access: yesInternational Journal of Optomechatronics
Epidural injection is used in pain intervention, requiring precise needle placement within the epidural space. Traditional techniques, such as loss of resistance and fluoroscopy-guided procedures, have limitations, including reliance on subjective ...
Gichan Cho   +4 more
doaj   +1 more source

Ratiometric Mycotoxin Detection in Living Plants With Dual‐Emissive Nanosensors

open access: yesAdvanced Materials, EarlyView.
A minimally invasive microneedle patch integrates carbon dot‐embedded metal–organic frameworks as nanosensors to detect a key fungal toxin in living plants. The nanosensor produces a ratiometric fluorescence signal that enables early, non‐destructive diagnosis of fungal infection before visible symptoms, offering a new biomaterials‐based strategy for ...
Yuliang Li   +9 more
wiley   +1 more source

Super‐Resolution Ultrasound Based Cell Tracking With Polymeric Nanobubbles

open access: yesAdvanced Materials, EarlyView.
This study presents a super‐resolution ultrasound platform for tracking cells in vivo. Biocompatible polymeric nanobubbles are used as highly echogenic intracellular labels. Following the injection of cells and microbubbles, ultrasound localization microscopy (ULM) can dynamically match the microvascular architecture and individual cell trajectories ...
Junlin Chen   +19 more
wiley   +1 more source

Development of a robotic test stand for testing vibroacoustic sensor units in needle insertion experiments

open access: yesCurrent Directions in Biomedical Engineering
To ensure the quality of newly developed medical devices, rigorous testing is essential. Conventional manual testing is a time-consuming, costly, and non-standardized process. Therefore, automation and robotics play an important role.
Huang Yeqingqing   +6 more
doaj   +1 more source

C6 plate puncture testing report.

open access: yes, 2013
There are numerous scenarios where critical systems could be subject to penetration by projectiles or fixed objects (e.g., collision, natural disaster, act of terrorism, etc.). It is desired to use computational models to examine these scenarios and make risk-informed decisions; however, modeling of material failure is an active area of research, and ...
Douglas Vangoethem   +2 more
openaire   +2 more sources

A Unified Polymer Hydrogel Electrolyte Integrating Robust Adhesion, Self‐Healing, and Oxygen Permeability in Flexible Neutral Zn‐Air Batteries

open access: yesAdvanced Materials, EarlyView.
Flexible neutral Zn‐air batteries achieving a remarkable 3000‐cycle lifespan and withstanding 1000 bending cycles are reported. This performance is realized by employing a 3D physically cross‐linked neutral hydrogel electrolyte that integrates high adhesion, self‐healing, O2 permeability, and CO2 tolerance to resolve critical stability challenges ...
Zhenyu Sun   +3 more
wiley   +1 more source

Investigation of bending angle algorithm and path planning for puncture needles in transjugular intrahepatic portosystemic shunt

open access: yesBioMedical Engineering OnLine
Purpose Design an algorithm to calculate the bending angle of the puncture needle for transjugular intrahepatic portosystemic shunt (TIPS) procedures and achieve three-dimensional visualized path planning.
Qinmei Liao   +6 more
doaj   +1 more source

Graphene‐Interfaced Stretchable Sweat Patch for Multiplexed Electrochemical Monitoring of IL‐6, Glucose, and Calcium Ions

open access: yesAdvanced Materials Technologies, EarlyView.
Flexible sweat sensor patch integrating graphene‑interfaced gold microelectrodes functionalized with bio‑receptors and ion‑selective membrane, coupled with a capillary‑driven microfluidic layer and portable potentiostat electronics for multiplexed monitoring of inflammatory, metabolic, and electrolyte biomarkers in microliter sweat volumes.
Roomia Memon   +4 more
wiley   +1 more source

Compression characteristics and damage mechanism of rose orange

open access: yesShipin yu jixie
Objective: Reduced the damage of rose orange in the process of packaging and transportation, and provided a theoretical basis for postharvest storage and spectral quality testing.
LU Siyu   +3 more
doaj   +1 more source

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