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N,N-Dimethyl-2,4,6-tri-tert-butylaniline: Preparation and properties

Autor: A. Sinnema, B. M. Wepster, G. A. Harff

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 98:71-74

The title compound, 3, is prepared in high yield starting from 2,4,6-tri-tert-butylaniline, 1. Reaction with formaldehyde provides N-methylene-2,4,6-tri-tert-butylaniline, 5; N-methylation then gives the immonium salt 6 which is reduced to 3. The the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::051891fcedc7e39ca7cd214ec8a13c59
https://doi.org/10.1002/recl.19790980305

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Effects of four different methods of sampling arterial blood and storage time on gas tensions and shunt calculation in the 100% oxygen test

Autor: F W, Smeenk, J D, Janssen, B J, Arends, G A, Harff, J A, van den Bosch, J P, Schönberger, P E, Postmus

Publikováno v: European Respiratory Journal. 10:910-913

At the present time, plastic syringes are most commonly used for collecting arterial blood. The oxygen tension of the arterial blood (Pa,O2) in these syringes may fall. We studied the effect of the type of syringe, metabolism, and storage time on the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e49e9ab5e67b875a15940940c8888dbd
https://doi.org/10.1183/09031936.97.10040910

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Effects of Haemolysis on the Creatine Kinase-MB Assay

Autor: G A Harff

Publikováno v: Annals of Clinical Biochemistry: International Journal of Laboratory Medicine. 35:556-558

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7824c2aa79e9fde440d8bcb0091a445f
https://doi.org/10.1177/000456329803500423

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Markers of inflammation and oxidative stress during lower respiratory tract infections in COPD patients

Autor: W J, van Beurden, F W, Smeenk, G A, Harff, P N, Dekhuijzen

Publikováno v: Monaldi archives for chest disease = Archivio Monaldi per le malattie del torace. 59(4)

Lower respiratory tract infections (LRTI) occur frequently in patients with Chronic Obstructive Pulmonary Disease (COPD), and are a major cause of morbidity, mortality and health care utilization. The aim of this study was to investigate if non- or l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::88b7e7157968d1786a352b34aa578ce7
https://pubmed.ncbi.nlm.nih.gov/15148836

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Evaluation of the Radiometer whole blood glucose measuring system, EML 105

Autor: G A, Harff, W C, Janssen, M L, Rooijakkers

Publikováno v: European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies. 35(3)

The performance of a new glucose electrode system from Radiometer was tested using two EML 105 analyzers (Radiometer Medical A/S, Copenhagen, Denmark). Results were very precise (both analyzers reported CV = 1.0% at a glucose concentration of 13.4 mm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::23cd6e351630ab36cd6f9ae2e94b09e1
https://pubmed.ncbi.nlm.nih.gov/9127748

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Influence of changes in ionized calcium on cardiovascular reactivity during hemodialysis

Autor: W H, van Kuijk, A W, Mulder, C H, Peels, G A, Harff, K M, Leunissen

Publikováno v: Clinical nephrology. 47(3)

In order to prevent hypercalcemia due to the treatment of secondary hyperparathyroidism the use of low calcium dialysate is advocated. However, as calcium ions play a pivotal role in both myocardial and vascular smooth muscle contraction, lowering th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d82f83c267fde7ea9bea0e67e9ff873f
https://pubmed.ncbi.nlm.nih.gov/9105767

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Improvement of the systematic predilution error of the Boehringer Mannheim Hitachi 911 analyzer

Autor: G A, Harff, P J, Ansems, G J, Hoving

Publikováno v: European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies. 34(12)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::13345f6bfec05380528f7be481ae9133
https://pubmed.ncbi.nlm.nih.gov/8986404

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Evaluation of the Hitachi 704 automatic analyzer

Autor: E. G. W. M. Lentjes, G. A. Harff, E. T. Backer

Publikováno v: Clinical Chemistry. 33:2089-2092

We evaluated the analytical performance of the Hitachi 704 automatic analyzer. The spectrophotometer showed a linearity of response at 340 nm up to 2.8 A. Photometric imprecision measured bichromatically at 340 and 376 nm was 0.49% at 0.16 A, 0.14% a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::277a5eb4ddeaa552160187cdde95e222
https://doi.org/10.1093/clinchem/33.11.2089

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Autoantibodies to lactate dehydrogenase in serum identified by use of immobilized protein G and immobilized jacalin, a jackfruit lectin

Autor: G A Harff, E T Backer

Publikováno v: Clinical Chemistry. 35:2190-2195

In this method for identifying autoantibodies to lactate dehydrogenase (anti-LDs) in serum, we used immobilized Protein G to bind IgG-complexed LD and immobilized jacalin to bind IgA-complexed LD, leaving non-complexed LD in solution. The non-complex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79c7b885c52bc9538fcf5432dca507d2
https://doi.org/10.1093/clinchem/35.11.2190

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