A study was made of the movement of the phosphorus of yeast ingested by adult female Drosophila melanogaster. It was found that seventy to eighty percent of the phosphorus in yeast is extracted during its passage along the gut. An average of 90% of the extractable phosphorus of the meal has passed through the gut to other tissues by the time the digestive tract has emptied. Incorporation of medium P into eggs is very rapid. Eggs laid by week old females contain over thirty times as much exogenous phosphorus as endogenous phosphorus. It is demonstrated that a Drosophila melanogaster female may ingest daily an amount of yeast equal to two times its body weight. During the day an amount of phosphorus equal to the amount of phosphorus in the ingested yeast is lost. Twenty percent of the phosphorus lost is non-absorbed phosphorus of the meal. Fourteen percent of the phosphorus lost is in eggs. Sixty-six percent of the phosphorus lost is in forms other than eggs (probably in secretions of the salivary glands, digestive tract and malpighian tubes. The relation between endogenous phosphorus remaining and time follows a two phase system where the slow phase has a half time longer …

Continuous measurements of the ambient air temperature have been made on a 420-ft tower at Brookhaven for nearly four years. Operational requirements associated with reactor operations have established a need for equipment which is durable, stable and accurate. The sensing elements consist of Leeds and Northrup resistance thermometers (Thermohms), housed in radiation shields and aspirated by a central pump. A twelve-point, triple-range recorder effects the successional measurement of temperature at each level. Two model R Leeds and Northrup instruments record the differences in temperature between the top of the tower and its base, and between the top and an intermediate level. Numerous tests and experiments have been conducted to determine the characteristics of the Thermohms, radiation shields, recorders, and the aspirating system. A technique is described for calibrating the tower thermometers and their associated recorders. Brief mention is made of the importance for lightning protection on a high tower.

It has been considered possible that the low-level radiation decomposition normally encountered in the neutron bombardment of organic halides might have some influence on the properties of halogen activity retained in organic form. The decrease in retention produced by chlorine and the increase produced by allyl chloride appears to be experimentally identical under the three conditions of bombardment used.

The thermal decomposition of polycrystalline NaBrO₃ has been studied in the temperature range 323–430°C. The only products are NaBr and Oxygen. Like KBrO₃, the reaction begins essentially on surfaces by the rapid formation of an interface and is followed by the penetration of this interface into the crystallite. The melting of a eutectic formed between the product NaBr and the parent material causes a marked increase in rate over certain temperature ranges. This is evident as a very sharp discontinuity on the Arrhenius plot. Evidence also exists for reaction along other routes such as at dislocations and other defects. Some of these conclusions are borne out by results with finely ground material.

Plant tissue contains two triosephosphate dehydrogenases, one using TPN as cofactor, the other using DPN. The leaves possess both enzymes while the roots and seeds possess only the DPN enzyme. Only the purification of the TPN enzyme will be described.

Two new substances, which appear to be polyphosphate derivatives of adenine nucleotides, have been obtained from trichloracetic acid extracts of rabbit liver. They appear to be chemical entities whose properties do not correspond with those of any of the compounds previously found in such extracts. One contains adenine and phosphate in the ratio of 2 to 3, and a carbohydrate derivative. The other compound contains adenine, pentose (presumably ribose), and phosphate in the ratio of 1:1:2. Both compounds were obtained in the elution of purine nucleotides from Dowex 1 ion exchange resin by 0.01M HCl, according to the procedure of Cohn and Carter (1). They appear between the fractions containing adenylic acid and adenosine diphosphate.

An interesting dynamic foundation problem was recently posed at Brookhaven National Laboratory in supplying the main magnet power for the three billion electron volt (3BEV) Cosmotron; at present the highest energy particle accelerator known to be in operation.

The vapor-liquid equilibria of solutions 0.0002 to 1.0 mole fraction methanol in carbon tetrachloride at 10, 20, 30, 40 and 50°C have been examined. The equilibrium vapor and liquid compositions and the total pressure above these solutions at the five temperatures are reported. The "pure" vapor pressure of methanol, [unable to transcribe] (a function calculated from the quotient Pa/Na of partial pressure of methanol Pa and mole fractions of methanol in the liquid Na), and the calculated values of the heat of vaporization of methanol both conclusively indicate that in solutions more dilute than 0.001 mole fraction methanol there still exists strong intermolecular attraction. This interaction is attributed to the existence of methanol dimers. A value of 7.6 to 11.2 kcal/mole is estimated for the dissociation of the dimer; this is the energy of the hydrogen bond if there is one hydrogen bond per dimer, and if there are two hydrogen bonds per dimer the energy of the bond is one-half this value.

A method for measuring the thickness of unprocessed nuclear emulations based on X-ray absorption is described and discussed

A study has been made of xenon concentration changes in brain and other body tissues of the dog during inhalation of radioactive xenon. The xenon concentrations of the thalamus, hypothalamus, caudate nucleus and medulla oblongata were similar and significantly higher than those of the cerebral parietal cortex at the two and six minute periods of inhalation. Whereas four of the five brain tissues studied were saturated within about six minutes, the cerebral parietal cortex may not be completely saturated even after a twenty minute period of inhalation of xenon at a constant tension. The xenon concentration of adrenal gland tissue rises rapidly and exceeds that of the brain tissues after about a ten minute period of inhalation. Kidney, liver and striated muscle absorb xenon more slowly than the other tissues studied.

Report issued by the Brookhaven National Laboratory discussing costs of power plant operations. As stated in the objective, "the objective of this study was to determine and evaluate operating and maintenance costs for nuclear power plants" (p. 1). This report includes tables, and illustrations.

Report issued by the Brookhaven National Laboratory discussing the formats and procedures used at the ENDF Neutron Cross Section Library. As stated in the introduction, "this report describes the philosophy, data formats, and procedures that have been developed for the Evaluated Nuclear Data File (ENDF)" (p. 1-1). This report includes tables, and illustrations.

Report issued by the Brookhaven National Laboratory discussing the operation of a hydrogen reservoir. As stated in the introduction, "information is provided on how the reservoir functions and how it can be safely operated. The equipment is described and basic operating procedures are given along with precautionary measures" (p. 1). This report includes tables, illustrations, and photographs.

Monthly report from the Reactor Operations Division of the Brookhaven National Laboratory that covers various topics like the different operations conducted, and the amount of energy consumed.