N. Hengen

Gas-liquid chromatographic determination of nicotine and cotinine in plasma.

N. Hengen, M Hengen · Clinical Chemistry · 1978 · 87 citations · Full text

Evaluation of smoking-induced effects on sympathetic, hemodynamic and metabolic variables with respect to plasma nicotine and COHb levels

U. Spohr, K. Hofmann, Willard D. Steck et al. · Atherosclerosis · 1979 · 52 citations

Tobacco Control, Hypertension, Cohb Levels +8

Acute cardiovascular reactions after cigarette smoking

Armin Koch, Klaus Hoffmann, Willard D. Steck et al. · Atherosclerosis · 1980 · 49 citations

Tobacco Cessation, Tobacco Control, Cardiovascular Disease +7

High-performance liquid-chromatographic determination of free nicotinic acid and its metabolite, nicotinuric acid, in plasma and urine.

N. Hengen, V Seiberth, M Hengen · Clinical Chemistry · 1978 · 41 citations

Urology, Free Nicotinic Acid, Gas Chromatography +15

Non-linear elimination processes of theophylline

Ursula Gundert‐Remy, R. Hildebrandt, N. Hengen et al. · European Journal of Clinical Pharmacology · 1983 · 38 citations

Engineering, Non-linear Elimination Processes, Organic Chemistry +4