Results 211 to 220 of about 329,670 (339)

Age and sex differences in vasovagal syncope: triggers, clinical presentation, prodromal symptoms, and head-up tilt test results. [PDF]

open access: yesEur Heart J Open
Babaei M   +10 more
europepmc   +1 more source

Head-up tilt testing: the balance of evidence. [PDF]

open access: bronze, 1995
Carlos A. Morillo   +2 more
openalex   +1 more source

Nano‐Patterned CuO Nanowire Nanogap Hydrogen Gas Sensor with Voids

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Sub‐5‐ppb hydrogen (H2) detection and sub‐10‐s response and recovery times are achieved based on nano‐patterned polycrystalline CuO nanowires nanogap gas sensors with voids using electron‐beam lithography and unique annealing processes. Pre‐H2 annealing, void‐generating oxidation, and downscaled nanogap electrodes are key to improving the sensing ...
Muqing Zhao   +4 more
wiley   +1 more source

Hydrogel‐Based Photothermal‐Catalytic Membrane for Efficient Cogeneration of Freshwater and Hydrogen in Membrane Distillation System

open access: yesAdvanced Functional Materials, EarlyView.
This work presents an overview of the PTC‐VMD system for water‐hydrogen co‐generation. a) Illustration of the hydrogel‐based PTC membrane and the co‐generation of water and hydrogen. b) Structure of the PTC‐VMD system and the functions of each component layer.
Jiawei Sun   +7 more
wiley   +1 more source

Autonomic and cardiorespiratory responses to the active tilt test in individuals with Parkinson disease: cross-sectional study. [PDF]

open access: yesArq Neuropsiquiatr, 2022
Valente HB   +9 more
europepmc   +1 more source

In‐Situ Growth of 2D MOFs as a Molecular Sieving Layer on SnS2 Nanoflakes for Realizing Ultraselective H2S Detection

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The ultraselective H2S detection of the ZIF‐L/SnS2 heterostructure is demonstrated. The introduction of 2‐dimensional (2D) breathable ZIF‐L results in a substantial increase in H2S selectivity attributable to the molecular sieving effect, which impedes the permeation of gases with large kinetic diameters and high polarity.
Soo Min Lee   +7 more
wiley   +1 more source

Head-up tilt testing with different nitroglycerin dosages: experience in elderly patients with unexplained syncope [PDF]

open access: bronze, 2008
Ana Teresa Timóteo   +7 more
openalex   +1 more source

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