Results 201 to 210 of about 4,103,456 (328)

Regio‐, Stereoselective, Aerobic and Metal‐Free Synthesis of Z‐Vinyl Sulfides: One‐Pot Hydroiodination of Internal Alkynes and in situ Sulfenylations

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Abstract A novel, metal‐free, air‐ and moisture‐compatible one‐pot tandem protocol for the regio‐ and stereoselective synthesis of Z‐vinyl sulfides (achieving yields up to 99%), is reported. This straightforward and efficient process combines the selective hydroiodination of internal alkynes, promoted by the eutectic mixture choline iodide (ChI)/p‐TsOH
Gloria Morís‐Menéndez   +5 more
wiley   +1 more source

Ammonia Dynamics in the Human Body: Insights in Biomedical Sensing Technologies

open access: yesAdvanced Sensor Research, EarlyView.
Ammonia (NH3) is a significant biomarker in diagnostics, affecting the respiratory system, stomach, liver, kidneys, bladder, and gastrointestinal tract. NH3 detection, using sensors, has the potential to improve medical diagnosis. This review examines recent advancements in NH3 sensing technologies and explores future research directions, including ...
Annelot Nijkoops   +8 more
wiley   +1 more source

Optimized Pt Loaded Cerium Tungstate Electrochemical Sensor for Rapid Response and Recovery NO2 Detection

open access: yesAdvanced Sensor Research, EarlyView.
Pt/Ce2(WO4)3, synthesized via simple calcination and hydrothermal methods, serves as a promising electrochemical gas sensor for detecting nitrogen dioxide (NO2). This study investigates the structural characteristics of the sensor. The sensor with 0.5 wt.% Pt loading exhibits the optimal sensing performance, demonstrating high sensitivity and ...
Jiaxin Li   +3 more
wiley   +1 more source

A 3D‐Printed Microfluidic Sensor Platform for Online Bioprocess Monitoring

open access: yesAdvanced Sensor Research, EarlyView.
A 3D‐printed microfluidic lab‐on‐a‐chip sensor platform is presented, compatible with various cultivation setups, that integrates sensors for pH, pO₂, pCO₂, glucose, lactate, and additionally features a sampling unit for small‐volume abstraction. With this platform, continuous real‐time monitoring of critical bioprocess parameters is enabled and ...
Christopher Heuer   +5 more
wiley   +1 more source

Non‐Invasive Diagnosis of Hypertrophic Cardiomyopathy by Breath

open access: yesAdvanced Sensor Research, EarlyView.
The use of sensor technologies for the diagnosis of hypertrophic cardiomyopathy (HCM) by identification of volatile organic compounds (VOCs) in breath samples. By combining gas chromatography‐mass spectrometry (GC‐MS) and electronic nose (eNose) platforms, specific VOC patterns associated with HCM are detected and analyzed.
Yael Hershkovitz‐Pollak   +5 more
wiley   +1 more source

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