Results 61 to 70 of about 27,319 (229)

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt   +4 more
wiley   +1 more source

Recent Advances (2023–2025) of Capillary Electrophoresis‐Mass Spectrometry (CE‐MS) for Top‐Down Proteomics

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Top‐down proteomics (TDP) characterizes proteoforms in cells, tissues, and biofluids, in discovery mode and on a global scale, requiring analytical tools with high peak capacity for proteoform separation and high sensitivity for proteoform detection, given the extremely high proteoform complexity and wide proteoform concentration dynamic range.
Guijie Zhu   +5 more
wiley   +1 more source

Electrodes for solid state devices [PDF]

open access: yes, 1983
The invention relates to coated metal powders and to dispersions of such powders in liquid vehicles forming screenable, sinterable pastes for use in forming electrodes on photovoltaic devices.
Bickler, D. B.
core   +1 more source

Water Drops Sliding Over Arrays of Janus Micropillars With Hydrophilic Tops: A New Mechanism of Drop Charging

open access: yesSmall, EarlyView.
A water drop slides over a distance of a few centimeters across arrays whose top surfaces exhibit a contact angle below 10°. The arrays are fabricated with hydrophilic tops and hydrophobic sidewalls and substrate, forming Janus structures. As the drop moves, it generates a spontaneous electric charge and leaves behind tiny satellite droplets that ...
Fahimeh Darvish   +4 more
wiley   +1 more source

Reductive defluorination of aqueous perfluorinated alkyl surfactants : effects of ionic headgroup and chain length [PDF]

open access: yes, 2009
Perfluorinated chemicals (PFCs) are distributed throughout the environment. In the case of perfluorinated alkyl carboxylates and sulfonates, they can be classified as persistent organic pollutants since they are resistant to environmentally relevant ...
Cheng, Jie   +5 more
core   +1 more source

Radiation‐Based 3D Dual‐Mode Thermal Management Devices: Advances in Active/Passive Switching for Energy‐Saving Applications

open access: yesSmall, EarlyView.
Heating and cooling energy demand account for nearly half of the global energy consumption. SH and RC offer sustainable, zero‐energy strategies, but single‐mode devices lack adaptability. 3D dual‐mode devices, exploiting axial, flipping, and bending deformations, provide reversible switching with dynamic or passive control, representing a promising ...
Su Eon Lee   +5 more
wiley   +1 more source

The tympanic covering layer contributes to basilar membrane elasticity potentially influencing human frequency resolution and speech perception

open access: yesJournal of Anatomy, EarlyView.
In this study we show for the first time that the human basilar membrane contains elastin produced by the so‐called tympanic covering layer. It is believed to play an important functional role in human cochlear tuning, particularly low frequencies linked to our remarkable speech and music perception.
Wei Liu   +9 more
wiley   +1 more source

Development of a special purpose spacecraft coating, phase 4 [PDF]

open access: yes
Coating formulations based on a fluorocarbon resin were evaluated for use on spacecraft exteriors. Formulations modified with an acrylic resin were found to have excellent offgassing properties.
Gillman, H. D.
core   +1 more source

Silicon Nitride Etch via Oxidation Reaction in Fluorocarbon/Oxygen Plasma: A First-Principle Study

open access: yesJournal of Microelectronic Manufacturing, 2018
Conducting all-in-one etch process for 3D-NAND fabrication requires close etch rate (E/R) for SiO2 and Si3N4; however, to attain comparable and high etch rate for both materials is challenging.
Yu-Hao Tsai, Du Zhang, Mingmei Wang
doaj   +1 more source

Jet‐Printing Microfluidic Devices on Demand

open access: yesAdvanced Science, 2020
There is an unmet demand for microfluidics in biomedicine. This paper describes contactless fabrication of microfluidic circuits on standard Petri dishes using just a dispensing needle, syringe pump, three‐way traverse, cell‐culture media, and an ...
Cristian Soitu   +5 more
doaj   +1 more source

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