Showing papers by "University of South Carolina published in 1970"
TL;DR: In this paper, bottom photography and dredge samples reveal that living Bryozoa thrive most abundantly at depths of 50-120 fathoms and that catenicelliform Zoaria occur in fine grained sand in quiet water whereas lunulitiform zoaria live in loose, moving, rippled sands.
109 citations
TL;DR: Several alpine valley systems in the southeastern Beartooth Mountains, Montana and Wyoming, have been examined using techniques similar to methods of stream system analysis as mentioned in this paper, and the general equation y
Abstract: Several alpine valley systems in the southeastern Beartooth Mountains, Montana and Wyoming, have been examined using techniques similar to methods of stream system analysis. The general equation y ...
94 citations
TL;DR: In this article, what does educational research say about the judging of writing ability? The Journal of Educational Research: Vol. 64, No. 4, pp. 147-156.
Abstract: (1970). What Does Educational Research Say about the Judging of Writing Ability? The Journal of Educational Research: Vol. 64, No. 4, pp. 147-156.
57 citations
TL;DR: To assess the zoogeographical significance of temperature, high and low thermal limits of both adult and larvae of species from these 2 regions were determined and Lethal salinity limits of the first stage zoeae of a few Crustacea were determined.
Abstract: The offshore waters of Cape Hatteras, North Carolina, USA, is an area of dynamic encounter between the northerly flowing, warm waters of the Gulf Stream and the southerly flowing, colder water of the Virginia coastal current. The faunal assemblages north of the Cape and those associated with a reeflike formation southe of the Cape in the Gulf Stream are distinct, each having predominantly cold- or warm-water affinities. To assess the zoogeographical significance of temperature, high and low thermal limits of both adult and larvae of species from these 2 regions were determined. Lethal salinity limits of the first stage zoeae of a few Crustacea were determined. In general, southern affinity species survived higher temperatures than northerly displanced species. In some cases, species with overlapping distributional limits had different thermal tolerances, which could be correlated with differential microhabitat selection. Many of the southern affinity species could not survive low temperatures which were characteristic of either the water mass northe of Cape Hatteras (4 °C) or the waters between the Gulf Stream and the shore (10 °C). A few species were able to seasonally acclimate to temperature extremes. Zoeae of reef species are the least resistant to both low temperature and low salinity.
49 citations
Journal Article•
39 citations
32 citations
TL;DR: In this paper, the far infrared spectra of solid and gaseous vinylene carbonate have been investigated and the interesting ring puckering fundamental (v 18 ) of symmetry species B 2 was observed at 233 cm −1 for the molecule in the vapor state.
31 citations
TL;DR: A two-layer plate consisting of a lower indicator layer of milk-agar and an upper nutrient agar layer was developed for isolating proteolytic marine bacteria.
Abstract: A two-layer plate consisting of a lower indicator layer of milk-agar and an upper nutrient agar layer was developed for isolating proteolytic marine bacteria.
31 citations
TL;DR: In this paper, the authors investigated the effect of thermal radiation on the burning rate of M-2 double-base solid propellant and determined the values of the heat of reaction, frequency factor and activation energy in the Arrhenius expression describing the chemical reactions in the solid.
Abstract: This paper reports the results of experimental and theoretical investigations into the effects of thermal radiation upon ignition and deflagration of M-2 double-base solid propellant. The values of the heat of reaction, the frequency factor and the activation energy in the Arrhenius expression describing the chemical reactions in the solid are determined by matching the numerical solutions of the mathematical model with three sets of experimental data. The effect of thermal radiation upon the propellant is only thermal. Theoretically the effect of thermal radiation on the burning rate is shown to be equivalent to an increase in initial temperature of the propellant only when the radiation absorption coefficient is small. For M-2 propellant, thermal radiation has insignificant effect upon the burning rate for a range of fluxes from 0 to 1.5 cal/cm2-sec.
27 citations
TL;DR: In this paper, the infrared spectra for liquid H 2 O and D 2 O were reported using a differential technique, which gave sharper bands whose positions were determined with greater certainty than those reported earlier in the literature.
TL;DR: The importance to stability of osmotic concentration and ion balance in the medium is established and probably of equal importance is the optimal combination of several common constituents of culture media.
Abstract: Living protoplasts were isolated from the interplacental regions ofSolanum nigrum berries by the removal of the walls from cells in tissue slices treated for 1–2 hours with 12% pectinase in 033 M to 038 M sucrose solution Protoplasts thus isolated, then washed and transferred to microculture chambers for observation, invariably tended to be spherical Comparative measurements of cell and protoplast volumes revealed that 10% of the isolated structures were subunits of protoplasts From diameter changes in protoplasts studied in a hypotonic (020 M) sucrose solution, the maximum expansion of the plasma membrane was determined Slightly hypertonic solutions (033 M to 038 M sucrose) promote stability of isolated protoplasts for several days The importance to stability of osmotic concentration and ion balance in the medium is here established Probably of equal importance is the optimal combination of several common constituents of culture media Further studies on some aspects of specific medium requirements are in progress
TL;DR: In this article, the Anderson exchange and motional narrowing model of a resonance spectrum was solved for two distinct cases having nuclear spin values of I = 1 2, 1, 3 2, 2, and 5 2.
TL;DR: In this paper, the infrared spectrum of red phosphorus (1400-33 cm−1) shows two pronounced bands at 452 and 354 cm −1 whereas, in the Raman spectrum, four strong, well-defined lines were observed.
TL;DR: The double anodic wave observed at low ionic strength in perchlorate is consistent with previous studies of the system and appears to have its origin in double layer effects rather than in an intermediate in the reduction.
TL;DR: Gaseous 3-oxetanone ring compound, investigating IR and vibrational spectra and molecular structure as discussed by the authors, is a ring compound of the 3oxetane ring compound.
TL;DR: In this paper, the surface tension pull is measured on each of a set of similar plates of constant thickness but with differing lengths on a given air-liquid system, and an experimental technique is devised to measure it.
TL;DR: In this paper, Williams, F. A., G. M., and G. E. C., "The Kinetics of Droplet Ignition in a Quiescent Air Environment," Ph.D. thesis, 1964, The Pennsylvania State University, University Park, Pa.
Abstract: 5 Faeth, G. M., "Flame Zone Development of Monopropellant Droplets," Combustion and Flame, Vol. 12, No. 5, Oct. 1968, pp. 411-416. 6 Williams, F. A., Combustion Theory, Addison-Wesley, Reading, Mass., 1965, Chap. 1. 7 Tarifa, C. S. and Larrazabel, J. M. S., "Combustion of Monopropellant Droplets," TN 57-671, July 1957, Air Force Office of Scientific Research. 8 Freidman, R. and Macek, A., "Ignition and Combustion of Aluminum Particles in Hot Gases," Combustion and Flame, Vol. 6, No. 1, March 1962, pp. 9-19. 9 Jones, W. H. (Chairman), "JANAF Thermo chemical Tables," Dow Chemical Co., Midland, Mich. 10 Phillips, L., "Thermal Decomposition of Organic Nitrates," Nature, Vol. 160, No. 4074, Nov. 1947, pp. 753-754. 11 Levy, J. B., "The Thermal Decomposition of Nitrate Esters, I. Ethyl Nitrate," The Journal of the American Chemical Society, Vol. 76, June 1954, pp. 3254-3257. 12 Adams, G. K. and Bawn, C. E. H., "Homogeneous Decomposition of Ethyl Nitrate," Transactions of the Faraday Society, Vol. 45, 1949, pp. 484-499. 13 Benson, S. W., The Foundations of Chemical Kinetics, McGraw-Hill, New York, 1960, Chap. 12. 14 Faeth, G. M., "The Kinetics of Droplet Ignition in a Quiescent Air Environment," Ph.D. thesis, 1964, The Pennsylvania State University, University Park, Pa. 15 Beltran, M. R. et. al., "Analysis of Liquid Rocket Engine Combustion Instability," TR-65-254, Jan. 1966, Air Force Rocket Propulsion Lab. 16 Hottel, H. C., Williams, G. C., and Simpson, H. C., "Combustion of Droplets of Heavy Liquid Fuels," Fifth Symposium (International) on Combustion, Reinhold, New York, 1955, pp. 101-129. 17 Williams, F. A., "On the Assumptions Underlying Droplet Vaporization and Combustion Theories," Journal of Chemical Physics, Vol. 33, No. 1, July 1960, pp. 133-144.
TL;DR: In this paper, the effects of magnitude of apparent suffering of a live peer model and the instructions concerning their ability to aid this individual on O reaction time (RT) were investigated, and it was predicted that under conditions where Os could influence the suffering of the model by the speed of their responses, RT would decrease as the magnitude of pain evidenced by this individual increased.
Abstract: Thirty-two undergraduate females participated in an experiment designed to investigate the effects of magnitude of apparent suffering of a live peer model and the instructions concerning their ability to aid this individual on O reaction time (RT). It was predicted that under conditions where Os were informed that they could influence the suffering of the model by the speed of their responses, RT would decrease as the magnitude of pain evidenced by this individual increased. However, under conditions where Os were informed that they could not aid the model, it was expected that RT would actually increase as the degree of pain shown by this person increased. Results supported these predictions.
TL;DR: The far-infrared spectra of thin films of NH4F and ND4F have been recorded at -170°C and two low-frequency lattice vibrations were observed in each spectrum and these have been assigned as optical translations on the basis of their isotopic shift factors as discussed by the authors.
Abstract: The far-infrared spectra of thin films of NH4F and ND4F and the Raman spectra of polycrystalline samples of both compounds have been recorded at -170°C. Two low-frequency lattice vibrations were observed in each spectrum and these have been assigned as optical translations on the basis of their isotopic shift factors. Librational modes were not observed in any of the spectra.
TL;DR: In this article, a Perkin-Elmer Model 621 spectrophotometer was used to measure the relative strength of the QH···O and O ǫD··· O bonds for pure CH3OH and CH3OD and carbon tetrachloride solutions of both alcohols.
01 Jan 1970
TL;DR: In this article, the infrared spectra of tetraphenylgermane and pentadeuterotetraphenymethylgermanes have been recorded from 4000 to 33 cm−1 and the Raman spectra have also been recorded as solids.
TL;DR: In this article, the two most popular temperature measurement techniques for solid-propellant research, infrared and thermocouple, are compared on the basis of experiments involving the simultaneous use of both techniques.
Abstract: The two most popular temperature measurement techniques for solid-propellant research, infrared and thermocouple, are compared on the basis of experiments involving the simultaneous use of both techniques. It is found that the fine-wire thermocouple measurements are more reliable than the optical measurements, and that temperature measurements at the burning surface are subject to error with both techniques, on account of the gaseous products of the solid decomposition. An analytical solution for the preignition warmup under external radiation is also included, in addition to a numerical technique for computing the infrared emission from a finite depth of propellant under steady burning.
TL;DR: The highly non-linear forms of deformation of tubes computed on the basis of the theory are compared with the experimental findings for a latex rubber tubing and for some bio-physical data taken from the literature.
TL;DR: Thermally prepared poly-α-amino acids tested after being stored in the dry state for 5 to 10 years suggest that particular primitive enzyme molecules could have been stable enough to have contributed to evolutionary processes long after they had been produced.
Abstract: Thermally prepared poly-alpha-amino acids were tested after being stored in the dry state for 5 to 10 years. Polymers effective in catalyzing the hydrolysis of p-nitrophenyl acetate showed the same levels of activity as observed 10 years earlier. Polymers effective in catalyzing the decarboxylation of oxaloacetic acid had in 5 years become insoluble in assay medium; their activity, however, had increased by 32 to 145 percent. The results suggest that particular primitive enzyme molecules could have been stable enough to have contributed to evolutionary processes long after they had been produced.
Patent•
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TL;DR: In this article, a method for minimizing the effects of a shock load by propagating the individual Fourier components of the stress waves associated with the load at different velocities over a short distance is presented.
Abstract: Method and apparatus for minimizing or eliminating damage to a system by mechanical impact. The method comprises minimizing the effects of a shock load by propagating the individual Fourier components of the stress waves associated with the load at different velocities over a short distance. The apparatus of the invention comprises a specially arranged or contoured body wherein the surface boundary causes the incident angle of the individual Fourier components to continuously vary over the distance of wave propagation. The method and apparatus is provided for specific uses such as automobile bumpers, automobile dashboards, suspension systems, ship construction, particularly submarines to minimize shock load damage, cargo handling and in building foundation construction to minimize or eliminate shock damage such as by earthquakes.