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A gas mixer for computer calibration of an anesthetic mass spectrometer

AbstractTo calibrate an anesthetic mass spectrometer without the use of premixed gases and vapors in cylinders, we devised a gas mixer using fixed resistances of capillary needle tubings and adjustable needle valves to dilute test gases and vapors with oxygen.

出版机构:Springer Netherlands

刊物名称:Journal of Clinical Monitoring and Computing

出版时间:1986

ISSN:1387-1307

数据源:报刊文摘

Synthesis of hydrocarbons under presumed prebiotic conditions using high-frequency discharge

SummaryVarious hydrocarbons were synthesized by high-frequency discharge in a primordial terrestrial model atmosphere. The products were extracted by benzene or methanol and analyzed by GC-MS.

出版机构:Springer Verlag

刊物名称:Journal of Molecular Evolution

出版时间:1986

ISSN:0022-2844

数据源:报刊文摘

Positive and negative ion mass spectrometry of tricyclic antidepressants

SummaryPositive electron impact (EI), positive chemical ionization (CI), and negative CI mass spectra of eight tricyclic antidepressants are presented.

出版机构:Springer Verlag

刊物名称:International Journal of Legal Medicine

出版时间:1986

ISSN:0937-9827

数据源:报刊文摘

The Measurement of Leucine Enkephalinat the Femtomole Level by Fast Atom Bombardment Mass Spectrometry/Mass Spectrometry Methods

FAB-MS/MS methods are used to quantify the neuropeptide leucine enkephalin (LE = YGGFL) in synthetic solutions. Maximum molecular specificity is provided by monitoring two metastable transitions from the LE (M + H)+, 556 ? 425 and 556 ?

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1986

ISSN:0003-2719

数据源:报刊文摘

Determination of Abnormal Hemoglobins by the Combined use of Reversed-Phase high Performance Liquid Chromatography and Fast Atom Bombardment Mass Spectrometry

By this method two varied hemoglobins, Hb D Punjab and Hb J Sardegna, have been determined. The methodology described, which is simple and reliable, could be used for the detection and structural identification of known and unknown Hb variants, without amino acid (a.a.) or sequence analysis.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1986

ISSN:0003-2719

数据源:报刊文摘

Recent Methodological Progress in Cadmium Analysis

Further, the introduction of new commercial polarogrphic analyzers offering square wave voltammetry made this method less prone to sample pretreatment performance, particularly for the analysis of somewhat higher contents.

出版机构:Taylor & Francis

刊物名称:International Journal of Environmental & Analytical Chemistry

出版时间:1986

ISSN:0306-7319

数据源:报刊文摘

In situ calibration of an oxygen sensor in intervertebral discs

Intradiscal hypoxia has been suspected of playing a role in the pathogenesis of degenerative back diseases. Investigating this hypothesis requires quantitative methods for measuring Po, in the intervertebral disc.

出版机构:Informa UK Ltd

刊物名称:Journal of Medical Engineering & Technology

出版时间:1986

ISSN:0309-1902

数据源:报刊文摘

Recognition of mixed anesthetic agents by mass spectrometer during anesthesia

AbstractAnesthetic agents are sometimes added to the wrong vaporizer on an anesthesia machine. As a result, the vaporizer may deliver a mixture of anesthetic agents at concentrations inappropriate for use on a patient.

出版机构:Springer Netherlands

刊物名称:Journal of Clinical Monitoring and Computing

出版时间:1986

ISSN:1387-1307

数据源:报刊文摘

Vaporization of In2Te3(s)

AbstractThe vaporization chemistry of In2Te3(s) was studied by the computer-automated simultaneousKnudsen-effusion and torsion-effusion method, by high-temperature mass spectrometry, and by ancillary methods. The first absolute measurements of the vapor pressure of In2Te3 are reported.

出版机构:Springer Vienna

刊物名称:Monatshefte fuer Chemie/Chemical Monthly

出版时间:1986

ISSN:0026-9247

数据源:报刊文摘

Endogenous cytokinins in vegetative shoots of peas

AbstractIn G2 peas senescence only takes place in long days. In order to determine the role of cytokinins in this process the endogenous cytokinins from vegetative shoots of G2 peas were characterized using gas chromatography-mass spectroscopy following purification by HPLC.

出版机构:Springer Netherlands

刊物名称:Plant Growth Regulation

出版时间:1986

ISSN:0167-6903

数据源:报刊文摘