Results 161 to 170 of about 5,630 (192)

Signal deformation at high ion concentration in atmospheric pressure laser ionization ion mobility spectrometry (APLI-IMS)

Sensors and Actuators B: Chemical, 2017
Abstract When using laser radiation for ionization in ion mobility spectrometry, a large increase in the number of produced ions compared to e.g. standard radioactive sources can be achieved. This number can be so large that Coulomb broadening of the measured mobility signal can be observed.
Marvin Ihlenborg, Jürgen Grotemeyer, Frank Gunzer   +2 more
openaire   +1 more source

Multicapillary ion mobility spectrometry (MCC-IMS) for early identification of bacteria in vitro

Respiratory Infections, 2017
Introduction: Early differentiation of bacterial species is crucial especially in the scope of emerging multiresistant strains. Conventional diagnosis takes about 3 working days even Maldi-TOF requires a preculture and is normally not available in less than 12 – 24 hours. During growth bacteria produce specific volatile compounds (VOC).
Claus Steppert, Tanja Dick, Isabel Steppert, Sven Schimanski, Thomas Bollinger, Roman Purkart, Gunther Becher   +6 more
openaire   +1 more source

Ion mobility spectrometry (IMS)-a chemical separation technique using an electrostatic field

Conference Record of the IEEE Industry Applications Society Annual Meeting, 2003
The author describes a chemical sensing and discrimination technique called ion mobility spectrometry (IMS), which separates ionic species in a chemical vapor by their mobility in an electrostatic field. An advantage of IMS over other techniques is speed of response.
openaire   +1 more source

[Photoionization ion mobility spectrometry (UV-IMS) for the isomeric volatile organic compounds].

Guang pu xue yu guang pu fen xi = Guang pu, 2015
The construction and performance study is reported for a newly developed ultraviolet photoionization ion mobility spectrometry (UV-IMS). In the present paper, an UV-IMS technique was firstly developed to detect eleven isomeric volatile organic compounds including the differences in the structure of carbon chain, the style of function group and the ...
Hu, Li, Wen-qi, Niu, Hong-mei, Wang, Chao-qun, Huang, Hai-he, Jiang, Yan-nan, Chu   +5 more
openaire   +1 more source

Laser Ionization Detection (LID) and Photoemissive (PE) Ion Mobility Spectrometry (IMS) Development

2001
Abstract : Significant advances are reported in the detection of trace analytes in ambient air by laser ionization detection and photoemissive ion mobility spectrometry. A numerical model was developed that describes the behavior of laser-produced ions in an applied electric field and the subsequent induced current flow in an external detection circuit
openaire   +1 more source

Ion Mobility Mass Spectrometry (IM-MS) for Structural Biology: Insights Gained by Measuring Mass, Charge, and Collision Cross Section

Chemical Reviews, 2023
Perdita E Barran
exaly  

Social capital I: measurement and associations with economic mobility

Nature, 2022
, Matthew O Jackson
exaly  

An evolving view on biogeochemical cycling of iron

Nature Reviews Microbiology, 2021
Andreas Kappler, Casey Bryce, Muammar Mansor   +2 more
exaly  

The universal visitation law of human mobility

Nature, 2021
Lei Dong, Paolo Santi, Michael Szell
exaly  

The effect of human mobility and control measures on the COVID-19 epidemic in China

Science, 2020
Moritz Kraemer, Bernardo Gutierrez, Chieh-Hsi Wu   +2 more
exaly