The analysis of the distribution of monoterpenes through the leaf pairs of a single shoot of Mentha piperita supports Reitsema's contention that the first terpenes formed are unsaturated ketones and that saturated terpenes are produced from these. The growth of Mentha piperita under varying conditions of temperature and the leaf-by-leaf...
The preparation of holocellulose accurately and rapidly is very
important to study the nature and relationships of the carbohydrate
components and the substituent groups, acetyl, carboxyl, and methoxyl.
In as much as bromine was thought to be less destructive to
wood than chlorine, it was decided to attempt to isolate...
Graphite oxides which had been prepared from three different
size graphite particles by the modified Brodie method were observed
with the electron microscope. The thermal decomposition products
of the oxides, obtained by heating them at 240° and 300°,
were observed using the electron microscope and x-ray diffraction.
Graphite oxide was...
Dihalocarbenes have been generated by thermal decomposition
of sodium trichloroacetate and tribromomethylphenylmercury, and
give mono dihalocyclopropyl adducts with steroid dienes. Such
compounds offer an easy starting point for the synthesis of unusual
derivatives of potential biological interest. Under the same conditions,
however, addition to non-conjugated double bonds does not
take...
The effects of different nitrogen sources on the primary and secondary pathways of Azotobacter vinelandii cells were studied by means of the radiorespirometric method. C¹⁴ labeled glucose and several key amino acids related to the tricarboxylic acid cycle, such as glutamic acid, aspartic acid, alanine, serine and glycine were used...
In an attempt to find a laboratory species which develops an
experimental myopathy similar to white muscle disease (WMD) in
lambs, comparative studies of nutritional muscular dystrophy of
chicks were initiated. This condition was grossly visible as white
striations running parallel with the fibers of the pectoral muscles and
was...
Vanadium pentoxide electrodes were prepared by melting
the powdered oxide around a platinum foil in a pyrex tube. The
electrode was discharged, and the discharge product was studied,
but not identified, by means of chemical and x-ray diffraction analysis.
A study was made of the relationship between the electrode
potential...
The production of C¹⁴O₂ metabolized from glucose labeled in
specific carbon atoms by homogenates of chick embryonic and adult
heart was compared by the radiorespirometric technique. Homogenates
of early (two to five days of incubation) embryo hearts were
found to utilize the phosphogluconate pathway of glucose catabolism
to a greater...
Preparation of a cytochrome c-cytochrome oxidase complex
was achieved, using crystalline beef cytochrome c and purified
cytochrome oxidase from beef heart muscle, or from the
Keilin-Hartree preparation. Succinate oxidase was reconstituted
with the complex.
A mixture of cytochrome oxidase, solubilized with nonionic
detergent, and excess cytochrome c was exposed to...
A study was made of the infrared absorption spectrum for
cyanate ion in KCl and KBr host lattices containing small amounts of
calcium or barium ion. Both pellets and single crystals were
scanned during the course of this study. The spectra of the barium
or calcium doped crystals contained many...
As part of a continuing study of sulfur containing non-aqueous
solvents, the present investigation was undertaken in an effort to obtain
a better understanding of the solvent sulfuryl chloride. The
primary object of the investigation involved a study of the rate of
radiochlorine exchange between sulfuryl and thionyl chloride in...