Results 101 to 110 of about 166,663,679 (286)

Spectral characterization of ten cyclic lipids using time-of-flight secondary ion mass spectrometry

, 2013
RATIONALE Over the last decade, the high lateral resolution and imaging capabilities of time-of-flight secondary ion mass spectrometry (ToF-SIMS) have increasingly stimulated interest in studying organic molecules in complex environmental materials ...
Siljeström, Sandra,, Sjovall, Peter, Martin Blumenberg, Christine Heim, Thiel, Volker, Volker Thiel, Sjövall, Peter,, Tim Leefmann, Thiel, Volker,, Leefmann, Tim,, Siljestrom, Sandra, Blumenberg, Martin,, Leefmann, Tim, Heim, Christine, Peter Sjövall, Heim, Christine,, Blumenberg, Martin, Sandra Siljeström   +17 more
core   +1 more source

A Constant-Momentum/Energy-Selector Time-of-Flight Mass Spectrometer [PDF]

, 2007
A matrix assisted laser desorption/ionization time-of-flight mass spectrometer has been built with an ion source that can be operated in either constant-energy or constant-momentum acceleration modes.
Håkansson, Per,, Barofsky, D. F., Piyadasa, C.K.G., Santacruz, C.P., Håkansson, P., Barofsky, D.F., Piyadasa, C. K. G.   +6 more
core   +1 more source

Efficient Hydroxyl Diffusion Triggers Surface Hydronium Enrichment and Bulk Proton Participation to Boost Alkaline Hydrogen‐Evolving Reaction

Advanced Materials, EarlyView.
For the first time, we shed light on the surface‐to‐bulk diffusion, induction, and reaction behaviors of OH−, H+, and H2O species on model oxides for alkaline hydrogen‐evolving reaction (HER). We first demonstrate that bulk OH− diffusion significantly affects the generation of proton sources and the diffusion/reaction behaviors of protons, thus ...
Daqin Guan, Hengyue Xu, Xiao Sun, Leqi Zhao, Chun‐Kuo Peng, Chao Jing, Yu‐Cheng Huang, Jiayi Tang, Nai Shi, Zezhou Lin, Xiaomin Xu, Zhiwei Hu, Zongping Shao   +12 more
wiley   +1 more source

Polar Wurtzite NbAlN: A Transition‐Metal Nitride Alloy for Polarization‐Engineered GaN Heterostructures

Advanced Materials, EarlyView.
A novel polar wurtzite alloy, NbAlN, is demonstrated as a transition‐metal‐containing polar barrier for GaN heterostructures. Nb atoms form coherent nanoscale enrichment within the wurtzite lattice without disrupting metal polarity. This study demonstrates that transition metals can be integrated into polar nitrides to enable polarization‐related ...
Atsushi Kobayashi, Souta Kurogi, Tomoya Okuda, Riku Kikuchi, Yusuke Wakamoto, Kouei Kubota, Hikaru Sasaki, Kazuhisa Ikeda, Kanako Shojiki, Takahiro Kawamura, Toru Akiyama, Takehito Seki, Takuya Maeda   +12 more
wiley   +1 more source

Novel analytical methods for the identification of emerging contaminants in aquatic environments [PDF]

, 2013
Growth in economics and prosperity has been a global trend during recent decades and the use of chemicals has increased tremendously as a part of industrial production, agriculture and everyday life.
Jernberg, Joonas
core  

Characterization of Dyes for Han Dynasty Wool Fabrics in Xinjiang by Time-of-Flight Secondary Ion Mass Spectrometry

Zhipu Xuebao
In Xinjiang, China, a female corpse dating back to the Han Dynasty was discovered adorned in splendid attire crafted from wool fibers dyed in vibrant shades of red, blue, and light yellow.
Jie LIU, Xiang-long CHEN, Han-dong LIANG, Cai TIE, Zhan-ping LI   +4 more
doaj   +1 more source

Spectroscopy in the analysis of bacterial and eukaryotic cell footprints on implant surfaces [PDF]

European Cells & Materials, 2012
We tested the suitability of two spectroscopic methods, x-ray photoelectron spectroscopy (XPS) and time of flight secondary ion mass spectrometry (ToF-SIMS), in the recognition of bacterial and eukaryotic cell footprints on implant surfaces.
E Kaivosoja, S Virtanen, R Rautemaa, R Lappalainen, YT Konttinen   +4 more
doaj  

Toward Pore‐Engineered 3D‐Printed Materials for Sorption Water Harvesting, Interfacial Evaporation, and Radiative Cooling

Advanced Materials, EarlyView.
Water harvesting, radiative cooling, and interfacial solar evaporation are fundamentally governed by coupled heat, mass, and light transport processes. These processes are mediated by pore architecture, including pore size, connectivity, and hierarchical organization.
Dejan J. Trajkovski, Higgins M. Wilson, Abdallah Y. M. Ali, Jiaxing Xu, Ruzhu Wang, Primož Poredoš   +5 more
wiley   +1 more source

Gold and silver nanoparticle-assisted laser desorption ionization mass spectrometry compatible with secondary ion mass spectrometry for lipid analysis

, 2014
To provide a convenient organic matrix-free spray-on sample preparation for laser desorption ionization (LDI) that is compatible with secondary ion mass spectrometry (SIMS) imaging mass spectrometry (IMS) techniques, silver and gold nanoparticles (NPs ...
Per Malmberg, Amir Saeid Mohammadi, Andrew G. Ewing, Mohammadi, Amir Saeid, Fletcher, John,, Fletcher, John S., Fletcher, John, Ewing, Andrew G, Mohammadi, Amir Saeid,, Fletcher, John S.,, Malmberg, Per, John S. Fletcher, Ewing, Andrew, Ewing, Andrew G,, Ewing, Andrew,, Malmberg, Per,   +15 more
core   +1 more source

The role of complexing agents in the flotation of pentlandite-pyroxene mixtures [PDF]

, 2003
Bibliography: leaves 137-146.This study examines the role complexing agents play in pentlandite-pyroxene flotation and focuses on the surface chemistry and interaction between valuable and gangue minerals as well as the interaction of complexing agents ...
Shackleton, Natalie Jean
core   +1 more source