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1,420 Newest Publications about the topic spectrometers

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Real time monitoring of gases emitted from soils using a multi-turn time-of-flight mass spectrometer “MULTUM-S II”

21-10-2014 | Takahiro Anan; Shuichi Shimma; Yo Toma; Yasuyuki Hashidoko; Ryusuke Hatano; Michisato Toyoda, Journal of Environmental Monitoring, 2014

Many miniaturized mass spectrometers used for on-site analysis have been designed and developed recently utilizing a broad range of analyzer platforms. These instruments are expected to have widespread applications covering many fields of interest. In our laboratory, a miniaturized multi-turn ...

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Characterization and usage of the EASY-spray technology as part of an online 2D SCX-RP ultra-high pressure system

14-10-2014 | Fabio Marino; Alba Cristobal; Nadine Binai; Nicolai Bache; Albert JR Heck; Shabaz Mohammed, Analyst, 2014

Ultra-high pressure liquid chromatography (UHPLC) systems combined with state-of-the-art mass spectrometers have pushed the limit of deep proteome sequencing to new heights making it possible to identify thousands of proteins in a single LC-MS experiment within a few hours. The recently released ...

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Thermal Energy Harvesting Plasmonic Based Chemical Sensors

08-10-2014 | Nicholas Karker; Gnanaprakash Dharmalingam; Michael A. Carpenter, ACS Nano, 2014

Detection of gases such as H2, CO, and NO2 at 500 °C or greater requires materials with thermal stability and reliability. One of the major barriers toward integration of plasmonic-based chemical sensors is the requirement of multiple components such as light sources and spectrometers. In this ...

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Waveguide sub‐wavelength structures: a review of principles and applications

30-09-2014 | Robert Halir, Przemek J. Bock, Pavel Cheben, Alejandro Ortega‐Moñux, Carlos Alonso‐Ramos, Jens H. Schmid, Jean Lapoi ..., Laser & Photonics Reviews, 2014

Abstract Periodic structures with a sub‐wavelength pitch have been known since Hertz conducted his first experiments on the polarization of electromagnetic waves. While the use of these structures in waveguide optics was proposed in the 1990s, it has been with the more recent developments of ...

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Ultra performance liquid chromatography – mass spectrometry studies of formalin‐induced alterations of human brain lipidome

30-09-2014 | Mathieu Gaudin, Maï Panchal, Sophie Ayciriex, Erwan Werner, Alain Brunelle, David Touboul, Claire Boursier‐Neyret, N ..., Journal of Mass Spectrometry, 2014

The development of ‘omics’ sciences offers new opportunities for the study of neurodegenerative diseases but increases at the same time the sample demand on brain banks that collect and store valuable human post‐mortem tissue. Our study aims to evaluate in lipidomics the potential of ...

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ChemInform Abstract: Transfer Reaction Studies with Spectrometers

04-09-2014 | S. Szilner, L. Corradi, G. Pollarolo, E. Fioretto, A. M. Stefanini, G. de Angelis, J. J. Valiente‐Dobon, E. Farnea, ..., ChemInform, 2014

Abstract Review: 22 refs.

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Characterization of in vitro metabolites of TM‐2, a potential antitumor drug, in rat, dog and human liver microsomes using liquid chromatography/tandem mass spectrometry

02-09-2014 | Lei Men, Yunli Zhao, Hongli Lin, Mingjing Yang, Hui Liu, Xing Tang, Zhiguo Yu, Rapid Communications in Mass Spectrometry, 2014

RATIONALE TM‐2 (13‐(N‐Boc‐3‐i‐butylisoserinoyl‐4,10‐β‐diacetoxy‐2‐α‐benzoyloxy‐5‐β,20‐epoxy‐1,13‐α‐dihydroxy‐9‐oxo‐19‐norcyclopropa[g]tax‐11‐ene) is a novel semi‐synthetic taxane derivative. Our previous study demonstrated that it is a promising taxane derivative. The in vitro comparative ...

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Accurate mass searching of individual lipid species candidates from high‐resolution mass spectra for shotgun lipidomics

02-09-2014 | Miao Wang, Yingying Huang, Xianlin Han, Rapid Communications in Mass Spectrometry, 2014

RATIONALE With the increased mass accuracy and resolution in commercialized mass spectrometers, new developments on shotgun lipidomics could be expected with increased speed, dynamic range, and coverage over lipid species and classes. However, we found that the major issue by using high mass ...

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Oxidation of catechols during positive ion electrospray mass spectrometric analysis: Evidence for in‐source oxidative dimerization

02-09-2014 | Luis E. Sojo, Navjot Chahal, Bernd O. Keller, Rapid Communications in Mass Spectrometry, 2014

RATIONALE Catechols are an important class of analytes occurring in many natural and synthetic products. Electrospray ionization in negative mode is the preferred way of ion generation for these compounds; however, studies in positive ion mode can reveal their potential for in‐source oxidation ...

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Scalable NMR spectroscopy with semiconductor chips [Chemistry]

19-08-2014 | Dongwan Ha; Jeffrey Paulsen; Nan Sun; Yi-Qiao Song; Donhee Ham, Proceedings of the National Academy of Sciences current issue, 2014

State-of-the-art NMR spectrometers using superconducting magnets have enabled, with their ultrafine spectral resolution, the determination of the structure of large molecules such as proteins, which is one of the most profound applications of modern NMR spectroscopy. Many chemical and ...

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