Results 51 to 60 of about 5,974,105 (275)

The application of carbon isotope ratio mass spectrometry to doping control [PDF]

Journal of Mass Spectrometry, 2008
AbstractThe administration of synthetic steroid copies is one of the most important issues facing sports. Doping control laboratories accredited by the World Anti‐Doping Agency (WADA) require methods of analysis that allow endogenous steroids to be distinguished from their synthetic analogs in urine.
Adam T, Cawley, Ulrich, Flenker
openaire   +2 more sources

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

FEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana, Avigail Yariv, Tal Oppenheim, Hadar Amartely, Dana Reichmann, Oded Livnah   +5 more
wiley   +1 more source

Research Advance of Chlorine Isotope Analytical Techniques

Journal of Isotopes
Chlorine is widely distributed in nature as a major and minor constituent in natural water bodies and salt deposits. The isotopic composition of chlorine serves as a key tracer for understanding the cycling processes of chlorine，and has been extensively ...
Xiangzhe ZENG, Xijie YIN, Shanshan LIN, Yuhong LI   +3 more
doaj   +1 more source

Isotope determination of sulfur by mass spectrometry in soil samples

Revista Brasileira de Ciência do Solo, 2012
Sulphur plays an essential role in plants and is one of the main nutrients in several metabolic processes. It has four stable isotopes (32S, 33S, 34S, and 36S) with a natural abundance of 95.00, 0.76, 4.22, and 0.014 in atom %, respectively. A method for
Alexssandra Luiza Rodrigues Molina Rossete, Josiane Meire Toloti Carneiro, Carlos Roberto Sant Ana Filho, José Albertino Bendassolli   +3 more
doaj   +1 more source

De novo synthesis of short‐chain aldehydes and hydrocarbons secreted by the brown marmorated stink bug Halyomorpha halys

FEBS Open Bio, EarlyView.
The brown marmorated stink bug, Halyomorpha halys, mainly secretes 4‐oxo‐(E)‐2‐hexenal, (E)‐2‐decenal, dodecane and tridecane, a mixture representative of that released by many heteropterans. We demonstrated that H. halys can synthesise these secretory components de novo using dietary glucose.
Haruna Fujimori, Koji Noge
wiley   +1 more source

Beryl Reference Materials for In Situ Oxygen Isotope Determination

Crystals, 2021
The mineral beryl (Be3Al2(SiO3)6) has the most abundant phase with industrial value for extracting a critical metal—beryllium. Due to multi-stage, fluid-induced growth, individual beryl grains may yield complex geochemical records, revealing variations ...
Xiaoxiao Ling, Qiuli Li, Lianjun Feng, Di Zhang, Yu Liu, Guoqiang Tang, Jiao Li, Shitou Wu, Liangliang Huang, Tiejun Li, Yan Liu, Ronald Werner, Xianhua Li   +12 more
doaj   +1 more source

Quantification of growth hormone in serum by isotope dilution mass spectrometry [PDF]

, 2009
Inter-assay variation of antibody based routine tests is hampering comparability of measurement results for growth hormone (GH) between different laboratories and decision making in clinical practice. Here it is demonstrated, that quantification of GH by
André Henrion, Cristian Arsene, Martin Bidlingmaier, Jenny Manolopoulou, Nina Diekmann   +4 more
core  

Performing native mass spectrometry analysis on therapeutic antibodies [PDF]

, 2013
Since the introduction of “soft” ionization techniques, the role of mass spectrometry (MS) in the field of structural biology has increasingly expanded.
Heck, A.J.R., Rosati, S, Sub Biomol.Mass Spectrometry & Proteom., Biomolecular Mass Spectrometry and Proteomics, Thompson, N.J.   +4 more
core   +1 more source

Cryogenic Deformation Behavior of TiAl and Insights Into Embrittlement After High‐Temperature Exposure Combined With Secondary Ion Mass Spectroscopy of Near Surface Chemistry

Advanced Engineering Materials, EarlyView.
Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul, Alexander Welle, Dirk Matthiessen, Michael Oehring, Fritz Appel, Florian Pyczak   +5 more
wiley   +1 more source

Absorption mode FTICR mass spectrometry imaging [PDF]

, 2013
Fourier transform ion cyclotron resonance mass spectrometry offers the highest mass resolving power for molecular imaging experiments. This high mass resolving power ensures that closely spaced peaks at the same nominal mass are resolved for proper image
Konijnenburg, Marco, Heeren, Ron M. A., O’Connor, Peter B., Heeren, R.M.A., Smith, Donald Francis, Kilgour, David P. A., Kilgour, D.P.A., Konijnenburg, M., Smith, D.F., Sub Biomol.Mass Spectrometry & Proteom., O'Connor, P.B., Biomolecular Mass Spectrometry and Proteomics   +11 more
core   +1 more source