Results 71 to 80 of about 1,078,130 (243)

Quantifying Solar-Powered Removal of Aqueous and Gaseous Sulfide in a Mine Water Passive Treatment System [PDF]

open access: yes, 2018
Passive treatment systems can improve water quality for mine water discharges. However, some process units, like vertical flow bioreactors (VFBRs), may produce excess sulfide, which can be a source of nuisance odors and toxicity.
Wall, Taylor
core  

Occupational exposure to hydrogen sulfide [PDF]

open access: yes
"The recommended standard is given limiting employee exposure to less than 15 milligrams of hydrogen-sulfide (7783064) per cubic meter of air (10ppm) during a 10 minute sampling period for up to a 10-hour work shift in a 40-hour workweek with evacuation ...

core   +1 more source

Recent Advances in Light‐Addressable Electrochemistry for Spatially Resolved Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This comprehensive review highlights light‐addressable electrochemistry as a powerful tool that uses light to control localized chemical reactions on unstructured semiconductor surfaces. The work evaluates advanced strategies to optimize electrode materials for enhanced spatial resolution and stability. Furthermore, it showcases diverse applications in
Nhi Trang Vo   +2 more
wiley   +1 more source

EFFICIENCY OF THE ENERGY-TECHNOLOGICAL PLANT ON THE EXTRACTION OF HYDROGEN FROM THE BLACK SEA DEPTH

open access: yesАвіаційно-космічна техніка та технологія, 2019
The article discusses a promising energy-technology unit for the extraction of hydrogen sulfide from the deep waters of the Black Sea, which provides for raising the gas-liquid mixture from the depths by the gas-lift method using wave pulses to separate ...
Михайло Романович Ткач   +3 more
doaj   +1 more source

Chitin‐Chitosan Cryogels for the Reversible Sequestration and Recovery of Heavy Metals From Wastewater

open access: yesAdvanced Materials Technologies, EarlyView.
Chitin‐chitosan cryogels with degrees of N‐acetylation from 12.2% to 71.4% are fabricated by dissolution, coagulation and lyophilization for the sequestration of heavy metals from water. Colorimetry and differential pulse voltammetry showed controlled adsorption and desorption capacities for As5+, Co2+ and Cu2+, making this material attractive for ...
Marta García‐Castrillo   +4 more
wiley   +1 more source

H2S-Induced Sulfhydration: Biological Function and Detection Methodology

open access: yesFrontiers in Pharmacology, 2017
At appropriate concentrations, hydrogen sulfide, a well-known gasotransmitter, plays important roles in both physiology and pathophysiology. Increasing evidence suggests that modifying thiol groups of specific cysteines in target proteins via ...
Da Zhang   +6 more
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

open access: yesAdvanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi   +4 more
wiley   +1 more source

Signal Molecule Hydrogen Sulfide (H2S) in Plants

open access: yesTürkiye Tarımsal Araştırmalar Dergisi, 2018
Hydrogen sulfide (H2S) is a gas known as toxic for years with the colorless formation and rotten egg odor. Hydrogen sulfide becomes phytotoxic for the plant when combined with other environmental stress conditions due to the high concentration of the ...
İlkay YAVAŞ, Aydın ÜNAY
doaj   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

How Flexible Is the Hydrogen Sulfide Molecule Structure? Influence of Hydrogen Sulfide Molecule Geometry on Its Hydrogen Bonds.

open access: yes
The geometry of hydrogen sulfide was studied by calculating potential energy surface (PES) with over 1800 configurations. The calculations were performed at very accurate CCSD(T)/aug-cc-pvz5 level.
Zarić, Snežana D.   +1 more
core   +1 more source

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