Now showing items 21-30 of 357
A direct-elution technique for the recovery of thin-layer samples
(Elsevier, 1978-01)
An elution technique is described which permits the recovery of samples from flexible thin-layer chromatograms without removal of the layer from the plate. This simple method avoids many of the problems associated with ...
An investigation of the maximum experimental safe gap anomaly
(Elsevier, 1979)
The "safe gap" is defined as the maximum gap between two close-fitting, flat, machined metal surfaces that will just prevent an explosion within a vessel from producing a propagating combustion wave in the gases that ...
Assignments of the n[pi]* singlet states of p-benzoquinone
(Elsevier, 1974-03-30)
The vapor phase fluorescence spectra of p-benzoquinone-h4 and d4 are reported and discussed in relation to the assignment of the low lying singlet states. The low temperature, polarized single crystal electronic absorption ...
Separation of bile acids from neutral lipids on thin-layer chromatograms
(Elsevier, 1974-11-13)
A game to help students comprehend enzyme structure and mechanism of action
(Elsevier, 1976-01)
Synthesis of [4.2]cyclophanes
(Elsevier, 1978)
Vinyl -xylylene cross-dimerizes with other xylylene-type intermediates to yield cycloadducts of the [8+6] and [6+6] type. This reaction provides a simple entry to the [4.2]paracyclophane system as well as the analogous ...
Determination of iodoamino acids and inorganic lodide by thin-layer chromatography
(Elsevier, 1970-10)
A method has been presented for the separation of monoiodotyrosine diiodotyrosine, diiodothyronine, triiodothyronine, thyroxine, and inorganic iodide from one another by thin-layer chromatography on silica gel. The solvent ...
Short-term effects of marijuana smoking on cognitive behavior in experienced male users
(Springer-Verlag, 1973-03)
The effects of smoking marijuana on the ability to use abstract concepts was tested in 12 experienced marijuana users. Each subject was tested three times, after smoking prepared 300 mg cigarettes containing either 0, 1.5 ...