Elemental phosphorus has been known for about 350 years. As a result of huge scientific interest, numerous textbooks are filled with information about this element, its different allotropes, and its compounds. [1] Like boron and carbon, the element features tremendous structural variability, resulting in great diversity of physical properties and chemical reactivity: White phosphorus, P4, forms...

This paper presents data on the distribution of acid-soluble phosphorus compounds in the blood cells of a few apparently normal individuals of each of forty-six species: twenty-two mammalian, twelve avian, six reptilian, four amphibian, and two fish. Since the studies were limited by availability of material, each order is represented by only a few species, and in many instances only one blood ...

: The mechanisms of the formation and transformation of calcium carbonates and the inhibition by the phosphorus containing compounds were studied. Supersaturated solutions form the unstable polymorph, amorphous calcium carbonate, at first, followed by the transformation to the metastable polymorph which finally transforms to stable form, calcite. Transformation proceeds by a mechanism of recrys...

The symptomatology Jf cyanide poisoning has been known for well )ver 100 years. Claude Bernard (1) was among the first to stress the inhibitory effect on the respiration of higher animals. The work of Keilin (2) and of Stotz (3) has shown that cyanide ion combines in vitro with :ytochrome oxidase and thereby interferes with the utilization of molecular oxygen by the tissue oxidation-reduction s...

Results of research into four-membered 2-halo-1,2λ⁵-oxaphosphetane phosphorus(V)-heterocycles are presented. The preparation of 2-halo-1,2λ⁵-oxaphosphetanes by reaction of P-haloylides with carbonyl compounds is described. The mechanism of asynchronous [2+2]-сycloaddition of ylides to aldehydes was proposed on the base of low-temperature NMR investigations. 2-Halo-1,2λ⁵-oxaphosphetanes were iso...

The phosphoric acid compounds of the blood may be divided into three groups: protein, lipoid, and acid-soluble (1, 2, 3, 4). In the last are included those compounds that are not precipitated with the proteins and lipoids when the blood is treated with the usual acid protein precipitants. In plasma, this acid-soluble phosphorus seems to consist almost entirely of inorganic phosphate (3, 4, 5, 6...

The organo-phosphorus compound Dipterext (trichlorphon; OO-dimethyl-2,2,2,-trichlorethyl phosphonate) has attracted considerable attention during the past few years. Besides its use as an insecticide, an attempt has been made to employ this substance for the treatment of intestinal parasites (Beheyt, Lebrun, Cerf, Dierickx, and Degroote, 1961 ; Cerf, Lebrun, and Dierickx, 1962). Schistosomiasis...

Little is known about phosphorus metabolism in plants suffering from moisture stress. Several metabolic processes, which are completely dependent upon phosphorylated intermediates, are noticeably affected by moisture stress conditions. Photosynthetic rate decreases markedly in severely stressed plants (13). Rate of fixation of CO2 in the dark decreases (12). Above a diffusion pressure deficit (...