Interplay between the Reactions to Light and to Gravity in Phycomyces

Sporangiophores of Phycomyces do not grow directly towards a horizontal beam of light, but equilibrate at an angle of about 30° above the horizontal. After describing several related observations, this paper suggests that the dioptric properties of an obliquely illuminated cylindrical lens, illustrated by a dummy cell, as well as a negative geotropic response, play major roles in determining the direction of growth. The shift of the equilibrium direction of growth towards the vertical, or a purely geotropic response, over a tenfold range of very low intensities (around 10^6 quanta/cm^2 sec., or 10^-13 watt/cm^2) has been studied, and an action spectrum made, measuring the quantum fluxes producing a standard intermediate equilibrium direction of growth at different wavelengths. This may differ from the action spectra at higher intensities in lacking conspicuous maxima from 370 to 490 mµ. However, in the ultraviolet it parallels the other spectra, although without showing the much higher quantum efficiency of ultraviolet relative to visible light previously noted. Possible interpretations are discussed

Mach 5 inlet CFD and experimental results

An experimental research program was conducted in the NASA Lewis Research Center 10 x 10 ft supersonic wind tunnel. The 2-D inlet model was designed to study the Mach 3.0 to 5.0 speed range for an over-under turbojet plus ramjet propulsion system. The model was extensively instrumented to provide both analytical code validation data as well as inlet performance information. Support studies for the program include flow field predictions with both 3-D parabolized Navier-Stokes (PNS) and 3-D full Navier-Stokes (FNS) analytical codes. Analytical predictions and experimental results are compared

Corporate Managers? Experiences Related To Implementing Section 404 Of The Sarbanes-Oxley Act: A Focus On Information Systems Issues

This article reports the experiences of corporate managers implementing the requirements of Section 404 of the Sarbanes-Oxley Act as it pertains to information systems. To carry out this research high ranking corporate managers were interviewed. Their firsthand experience with implementing the requirements of the Act provides valuable insight into some of the challenges and benefits resulting from the legislation

Report of the Home Economics Department

Report by Lois Dowdle Cobb, director of the American Institute of Home Grown Fats and Oils, about her activities promoting the use of margarine in 1934-1935.https://scholarsjunction.msstate.edu/mss-cobb-dowdle-papers/1002/thumbnail.jp

An evaluation of the second grader's knowledge and understanding of the property rights concept

Thesis (Ed.M.)--Boston UniversityThe general aim of this thesis was to test the extent to which the children had learned the property rights concept, and not the extent to which they had been able to integrate their knowledge of these rights with their actual behavior. More specifically it was the purpose of this study to discover (1) whether there was any differentiation between a second grader's understanding of property that was brand new and if property that had been used for a long time, (2) whether a child in the second grade differentiated in his understanding of property which was considered valuable and property which was not considered valuable, (3) whether children in the study differentiated in their understanding of property of different types, (4) whether there was any correlation between knowledge of property rights that second grade children had and nursery school training, number of siblings, status of siblings, Sunday School training, sex, age, and socio-economic status

Good living our goal, 1933 address

Good Living Our Goal,\u27 address of Lois P. Dowdle, President of Association of Southern Agricultural Workers, February 1, 1933, New Orleans, Louisiana.https://scholarsjunction.msstate.edu/mss-cobb-dowdle-papers/1004/thumbnail.jp