Results 201 to 210 of about 112,781 (355)

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

Biomass‐Derived Hetero Atom‐Doped Porous Carbon for Enhanced CO2 Adsorption

open access: yesMetalMat, EarlyView.
This review discusses the synthesis and characterization of the heteroatom (N, S, P, O, B)‐doped porous carbon materials which are specifically designed for the CO2 capture and CO2 conversion to value‐added products. ABSTRACT The emission of carbon dioxide (CO2) and its impact on global warming have shown exponential growth in recent decades.
Aniruddha B. Patil   +2 more
wiley   +1 more source

Vibrational lifetimes and vibrational line positions in polyatomic supercritical fluids near the critical point [PDF]

open access: bronze, 1997
Randall Urdahl   +5 more
openalex   +1 more source

Influence of Velocity Feedback Time Delay on the Nonlinear Dynamic Characteristics of Maglev Trains Under Unsteady Aerodynamic Forces

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Time delays frequently arise in active control systems due to sensor sampling, signal transmission, and actuator response, making their effects on system dynamics non‐negligible. This paper investigates how velocity feedback time delay influences the nonlinear dynamic characteristics of a maglev train subjected to unsteady aerodynamic forces ...
Jia‐Xuan Li, Zhi‐Wei Liu, Xiang Liu
wiley   +1 more source

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