Ohio Journal of Science: Volume 77, Issue 5 (September, 1977)

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Front Matter
pp. 0
Article description | Article Full Text PDF (702KB)

Announcements
pp. 198-198
Article description | Article Full Text PDF (77KB)

Prediction of Survival Time of Rats in Hot Environments
Wright, G. L.; Knecht, E.; Lempert, B. pp. 199-206
Article description | Article Full Text PDF (493KB)

A Sex Difference in the Mortality Pattern of L 1210 Leukemia in DBA/2 Mice
Szilagy, Julianna E.; Weiss, Harold S. pp. 207-209
Article description | Article Full Text PDF (237KB)

Brief Note Surface Charge Determination of Proteus Mirabilis Exposed to Carbenicillin
Prior, Richard B.; Seed, Thomas M.; Perkins, Robert L. pp. 210-212
Article description | Article Full Text PDF (1306KB)

Descriptive Mineralogy of Pugh Quarry, Northwestern Ohio: Marcasite and Pyrite
Parr, David F.; Chang, Luke L. Y. pp. 213-222
Article description | Article Full Text PDF (3267KB)

Brief Note Further Interpretation on the Implications of Rorschach Card Meaning
Hoover, Thomas O. pp. 222-223
Article description | Article Full Text PDF (200KB)

Preliminary Studies on Chitin Decomposition in Lake Erie Sediments
Warnes, Carl E.; Randles, Chester I. pp. 224-230
Article description | Article Full Text PDF (2135KB)

Interception of Solar Radiation by Three Deciduous Forest Communities in Neotoma, A Valley in Southcentral Ohio
Riemenschneider, Victor L.; Gilbert, Gareth E. pp. 231-235
Article description | Article Full Text PDF (276KB)

Interactions of Applied Hormones in the Germination of Lepidium Virginicum Seeds
Evans, Robert C.; Fratianne, Douglas G. pp. 236-239
Article description | Article Full Text PDF (331KB)

Brief Note Discovery of a Rare Mayfly (Anepeorus Sp.) in the Ohio River
Beckett, David C. pp. 240-242
Article description | Article Full Text PDF (518KB)

Brief Note Report of an Amphipod Species New to Ohio: Gammarus Minus Say (Amphipoda: Gammaridae)
Beckett, David C.; Lewis, Philip A.; Holsinger, John R. pp. 242-243
Article description | Article Full Text PDF (169KB)

Brief Note Epitheca (Tetragoneuria) Canis MacLachlan Another Dragonfly New to Ohio
Perry, T. Edward pp. 243-244
Article description | Article Full Text PDF (180KB)

Back Matter
pp. 999
Article description | Article Full Text PDF (514KB)

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    Back Matter
    (1977-09)
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    Brief Note Report of an Amphipod Species New to Ohio: Gammarus Minus Say (Amphipoda: Gammaridae)
    (1977-09) Beckett, David C.; Lewis, Philip A.; Holsinger, John R.
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    Interactions of Applied Hormones in the Germination of Lepidium Virginicum Seeds
    (1977-09) Evans, Robert C.; Fratianne, Douglas G.
    Tests of the germination response of light sensitive Lepidium virginicum seeds to applied gibberellic acid confirmed earlier reports that gibberellic acid can substitute for red light. Further tests indicated that promotion of germination by either red light or gibberellic acid can be nullified by abscisic acid. Dark incubation of the seeds in kinetin alone resulted in only slight promotion of germination. Combinations of suboptimal gibberellic acid plus kinetin did not enhance germination to a level greater than that for kinetin alone. Optimal concentrations of gibberellic acid plus kinetin can reverse inhibition of certain abscisic acid concentrations. A comparison of these responses with those of Grand Rapids variety of lettuce seed was made.
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    Interception of Solar Radiation by Three Deciduous Forest Communities in Neotoma, A Valley in Southcentral Ohio
    (1977-09) Riemenschneider, Victor L.; Gilbert, Gareth E.
    Daily direct solar plus sky radiation (global) was measured above the canopy and at the forest floor in 3 deciduous forest communities of Neotoma, a small valley in southcentral Ohio. The amount of daily global radiation at the forest floor was maximal during April and rapidly declined as the canopy closed. After canopy closure, and throughout the summer, the percent of total global radiation reaching the forest floor was constant for the mixed mesophytic and mixed oak communities; 10.1 percent for the mixed oak community, and 7.3 percent for the mixed mesophytic community. The percent of total global radiation reaching the forest floor of the ridgetop chestnut oak community was much greater, averaging 26.5%, and more variable.
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    Preliminary Studies on Chitin Decomposition in Lake Erie Sediments
    (1977-09) Warnes, Carl E.; Randles, Chester I. (Chester Irvin), 1918-1991
    Enrichment studies, biproduct analyses, and slides coated with chitin were employed to examine chitin decomposition in Lake Erie sediments and the watersediment interface. Enumeration studies of sediment indicated the presence of approximately 106 ml1 heterotrophic bacteria of which approximately 10% (105 ml1) displayed chitinolytic ability. Chitin-coated slides buried in a mud jar gave preliminary evidence of a succession of microorganisms active in chitin degradation in both the aerobic and anaerobic zones of the sediment column. Enrichment studies of frozen core sections showed the potential activity of microorganisms in the sediments to degrade chitin with the release of NH3. Tests for release of the subunit of chitin, N-acetylglucosamine, from enriched sediments were not successful.
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    Descriptive Mineralogy of Pugh Quarry, Northwestern Ohio: Marcasite and Pyrite
    (1977-09) Parr, David F.; Chang, Luke L. Y.
    Minerals from solution cavities and associated collapse breccias in the Middle Devonian dolostone at Pugh Quarry, Wood County, Ohio were collected and identified. Two types of marcasite were recognized: banded encrustations and euhedral crystals. The banded marcasite is widespread in the mineral zone, especially in the northeastern section of the Quarry, and showed 3 distinct habits: subhedral, globular, and columnar. On freshly exposed surfaces, the colors were greenish gray or a mixture of pale yellow and gray. A characteristic of the banded marcasite is the presence of extensive intergrowth twinning. The euhedral marcasite was found in rocks in all parts of the Quarry, both inside and. outside the mineral zone. On freshly broken surfaces, the euhedral crystals were gray-white with a greenish cast. Prismatic and tabular habits were observed. Many of the crystals showed hopper development. Pyrite is not a common mineral in Pugh Quarry. Generally, crystals were small, less than 1 mm in size, greenish brown to yellowish brown in color, and highly lustrous.
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    Brief Note Surface Charge Determination of Proteus Mirabilis Exposed to Carbenicillin
    (1977-09) Prior, Richard B.; Seed, Thomas M.; Perkins, Robert L.
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    A Sex Difference in the Mortality Pattern of L 1210 Leukemia in DBA/2 Mice
    (1977-09) Szilagy, Julianna E.; Weiss, Harold S.
    Female DBA/2 mice inoculated with 1 x 106 L 1210 leukemia cells died, more rapidly than simultaneously inoculated male mice with a mean survival of 0.1 ± 0.2 days vs. 7.2 =•=0.4 days. For males, this represents an average of 18% longer survival than females. Trials involving gonadectomy or treatment with exogenous sex hormones suggest that the sex difference in mortality was due to exacerbation of L 1210 leukemia by estrogen.
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    Prediction of Survival Time of Rats in Hot Environments
    (1977-09) Wright, G. L.; Knecht, E.; Lempert, B.
    A total of 136 male rats were exposed to terminal heat stress and the colonic heating curves were analyzed to determine equilibrium temperature, rate of heating from resting temperature to the equilibrium temperature, the difference between resting temperature and equilibrium temperature, and the rate of colonic temperature change during the first 30 minutes following attainment of the equilibrium temperature for formulation of an equation for prediction of survival time. It was determined by stepwise multiple linear regression that equilibrium temperature and rate of colonic temperature change were significantly correlated with survival time. A prediction equation was computed for control animals (N = 66) and applied to rats of different body weight (age), thermal exposure environment, and peripheral vascular tone (spontaneously hypertensive rats). The results indicated that the relationship between survival time and heating curve parameters was similar between different age groups with a mean error of 0.2% and 7.3% noted in predicted values for 10 and 7-week old animals, respectively. The predictive accuracy of the equation was, however, markedly reduced in control animals (36.2% error) and hypertensive animals (15.2% error) exposed to a less severe thermal environment.
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    Announcements
    (1977-09)
  • Item
    Front Matter
    (1977-09)