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Analysis of exogenous dehydroepiandrosterone excretion in urine by gas chromatography/combustion/isotope ratio mass spectrometry.
  • M. Ueki, M. Okano
  • Chemistry, Medicine
  • Rapid communications in mass spectrometry : RCM
  • 30 November 1999
A detailed procedure for the analysis of exogenous dehydroepiandrosterone (DHEA) in urine by gas chromatography/combustion/isotope ratio mass spectrometry (GC/C/IRMS) has been established forExpand
  • 58
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Automated headspace solid-phase microextraction and in-matrix derivatization for the determination of amphetamine-related drugs in human urine by gas chromatography-mass spectrometry.
An automated extraction and determination method for the gas chromatography (GC)-mass spectrometry (MS) analysis of amphetamine-related drugs in human urine is developed using headspace solid-phaseExpand
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  • PDF
Sub-50-nm physical gate length CMOS technology and beyond using steep halo
Sub-50-nm CMOS devices are investigated using steep halo and shallow source/drain extensions. By using a high-ramp-rate spike annealing (HRR-SA) process and high-dose halo, 45-nm CMOS devices areExpand
  • 35
  • 1
Doping with naturally occurring steroids
AbstractThe current definition of doping involves the restriction of the use of naturally occurring compounds The typical examples of such dope agents are testosterone and the related steroidExpand
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Structure-based comprehensive identification of erythropoiesis-stimulating agents and their biosimilars
Erythropoietin (EPO) is a glycoprotein that stimulates production of red blood cells. After the patents for recombinant EPO (epoetin) expired in 2007, biosimilar erythropoiesis-stimulating agentsExpand
  • 3
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[Steroidal anti-inflammatory drugs].
  • A. Ikekita, M. Ueki
  • Medicine
  • Nihon rinsho. Japanese journal of clinical…
  • 1 December 2004
  • 5
  • 1
Improvement of Uniformity and Reliability of Scaled-Down Cu Interconnects with Carbon-Rich Low-k Films
Highly selective dry-etching processes are developed for conventional via-first (VF) pattering sequences to fabricate reliable Cu dual-damascene interconnects (DDI) in carbon-rich low-k films, suchExpand
  • 5
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20K-GH and its use in detecting GH abuse.
Following the successful production of recombinant 20K-GH, several studies investigating the physiology of this GH isoform have been undertaken. In this report, we review studies of its biologicalExpand
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Unimolecular HF Loss from the Molecular Ions of Fluorophenols and Fluoroanilines. A 'Ring-walk' Mechanism of a Fluorine Atom
The loss of HF is one of the main fragmentation processes in the metastable molecular ions of fluorophenols and fluoroanilines. By investigation of D-labelled compounds, it could be established thatExpand
  • 20
[Drug of abuse].
  • M. Ueki
  • Medicine
  • Rinsho byori. The Japanese journal of clinical…
  • 1 February 2002
Recent development of various dietary supplements after enforcement of "Dietary Supplement Health and Education Act of 1994 (DSHEA)" in the USA enabled better availability of the products through theExpand
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