Ohio Journal of Science: Volume 81, Issue 2 (March, 1981)

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https://kb.osu.edu/handle/1811/22061

Front Matter
pp. 0
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Ground-Level Magnetic Study of Greene County, Ohio
Obot, V. E. D.; Wolfe, Paul J. pp. 50-54
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The Effects of Municipal Pumping from a Shallow Glacial Aquifer at Bryan, Northwestern Ohio
King, James M.; Ruedisili, Lon C. pp. 55-63
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Detection of Urban Places in Ohio From Landsat Imagery
Harnapp, Vern R. pp. 64-69
Article description | Article Full Text PDF (380KB)

Seismic Refraction Study of a Buried Valley Near Peninsula, Summit County
Mangun, Mark; Kunze, A. W. Gerhard; Szabo, John P. pp. 69-73
Article description | Article Full Text PDF (350KB)

Requirement of Thiols in the Adenosine-Diphosphate Ribosylaton of Elongaton Factor-2 by Pseudomonas Aeruginosa Exotoxin A
Baker, Neil R.; Lietman, Paul pp. 74-77
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Chemical Composition of the Rocky River Near Cleveland, Ohio
Lo, Howard H.; Soster, Frederick M. pp. 78-82
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Analysis of Waterfowl Harvest in Mercer County, PA
Brenner, Fred J.; Morris, Thomas J.; Blauser, Robert pp. 83-87
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Face Immersion Bradycardia: Comparison of Swimmer and Nonswimmers
Frey, Mary Anne Bassett; Kenney, Richard A. pp. 88-92
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Brief Note: The Oxygen Requirements of the Crayfish, Orconectes Rusticus
Eggleston, Patrick M.; Lustick, Sheldon I. pp. 92-94
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Brief Note: First Record of Chaetonotus Heideri (Gastrotricha: Chaetonotidae) In North America
Emberton, Kenneth C., Jr. pp. 95-96
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Back Matter
pp. 999
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Back Matter
(1981-03)
Brief Note: First Record of Chaetonotus Heideri (Gastrotricha: Chaetonotidae) In North America
(1981-03) Emberton, Kenneth C., Jr.
Brief Note: The Oxygen Requirements of the Crayfish, Orconectes Rusticus
(1981-03) Eggleston, Patrick M.; Lustick, Sheldon I.
Face Immersion Bradycardia: Comparison of Swimmer and Nonswimmers
(1981-03) Frey, Mary Anne Bassett; Kenney, Richard A.
A profound bradycardia may be exhibited by waterfowl and aquatic mammals when they dive underwater in search of food. A similar response occurs in humans diving underwater or simply wetting the face while breathholding. This bradycardia is mediated by the parasympathetic nervous system (vagus). We investigated whether the extent of this apneic face immersion bradycardia, or bradycardia during dry apnea, is greater in actively training competitive swimmers than in nonswimmers. Eight competitive swimmers and eight age/sex matched nonswimmers each performed apneic face immersion and dry apneic maneuvers while prone. Resting cardiac cycle (interval) duration was not significantly different between these groups, but the swimmers had a significantly longer interval duration (lower heart rate), P<0.05, and a greater percentage decrease of interval duration during both apneic face immersion and dry apnea. Swimmers—but not nonswimmers—demonstrated cardiac arrhythmias considered to be vagally mediated during face immersion. These results indicated that competitive swimmers in active training may have a greater range of parasympathetic nervous system (vagal) control of the heart as well as the well-accepted greater resting level of vagal tone.
Analysis of Waterfowl Harvest in Mercer County, PA
(1981-03) Brenner, Fred J.; Morris, Thomas J.; Blauser, Robert
Age, sex and species composition of waterfowl harvested on a new marsh development were determined from wing collections. Mallards (Anas platyrhynchos) and wood ducks (Aix sponsa) were harvested in greater numbers than other species, the number harvested being directly proportional to the number of birds observed on the marsh during pre-season surveys. The number of mallards harvested was also directly related to the number of game farm birds released prior to the opening of the season.
Chemical Composition of the Rocky River Near Cleveland, Ohio
(1981-03) Lo, Howard H.; Soster, Frederick M.
On 29 and 30 October 1978, 44 water samples were collected from the Rocky River and selected tributaries. We investigated the distribution of K, Na, Ca and Sr with respect to location along the river and found that the Lower Rocky River has the highest average concentrations of K, Na and Ca, compared to the East Branch and West Branch, a finding probably attributable to cultural inputs from waste water and industrial dumps. The higher average concentrations of K, Na and Ca in the West Branch relative to the East Branch of the Rocky River may be caused by the agricultural and industrial input. The sharp drop of element concentrations near the mouth of the Rocky River may be the result or mixing of lake water with the river water. The average concentrations of K, Na, Ca and Sr found in the Lower Rocky River were 7.4, 62.0, 59.0, and 0.15 ppm, respectively. These values are comparable with those of the Lower Cuyahoga River but are considerably higher than those reported for the midlake water of Lake Erie.
Requirement of Thiols in the Adenosine-Diphosphate Ribosylaton of Elongaton Factor-2 by Pseudomonas Aeruginosa Exotoxin A
(1981-03) Baker, Neil R.; Lietman, Paul
The extent of the transfer of the adenosine 5'-diphosphate ribose (ADPR) moiety of nicotinamide adenine dinucleotide onto elongation factor 2 (EF-2) catalyzed by Pseudomonas aeruginosa exotoxin A (PA-toxin) was dependent upon the presence of a reducing agent, dithiotheritol (DTT). The reaction requires DTT in low concentration (1 to 10 mM) and in the absence of DTT less product, ADPR-EF 2, was formed. PA-toxin was fully activated by treatment with a denaturing agent, sodium dodecyl sulphate (SDS), in conjunction with DTT. In the presence of activated toxin, the maximum transfer of ADPR onto EF-2 was observed when EF-2 had been previously reduced with DTT. Denaturation of EF-2 prior to reduction did not produce a further increase in its ability to act as a substrate for PA-toxin.
Seismic Refraction Study of a Buried Valley Near Peninsula, Summit County
(1981-03) Mangun, Mark; Kunze, A. W. Gerhard; Szabo, John P.
A portion of the buried preglacial Akron River valley in northern Summit County was investigated using the seismic refraction method with a BISON 6-channel model 1580 seismograph and a mechanical shock source. From 42 traverses, we gained depth information that permitted construction of an improved structural contour map of bedrock topography. The buried Akron River valley is located in approximately the same position as described by Smith and White (1953), but we determined that it is much narrower than they had estimated with a steep V-shaped bottom portion and gently sloping shoulders. The approximate depth to bedrock over the valley axis is 500 ft. The seismic data further indicated 2 types of valley fill: a lower layer of probably Wisconsinan glacial material with P-wave velocity of 5700 =*= 1400 ft/sec and a thinner, discontinuous upper layer of uncertain nature with P-wave velocity of 2600^600 ft/sec. The weathered zone ranges in thickness from 4 ft to 32 ft and has a seismic velocity of 800 ± 160 ft/sec. Bedrock seismic velocities were 12000=^=2000 ft/sec, appropriate for shale or sandstone.
Detection of Urban Places in Ohio From Landsat Imagery
(1981-03) Harnapp, Vern R.
False color Landsat imagery can aid in urban detection with certain limitations. A population threshold of 10,000 appears to be a reliable level for detection in Ohio. At this level, 89% of Ohio urban places were detected. Below this threshold, chances are one in two of detecting an urban place. Accuracy of detection varied with urban size and seasonality of imagery. In general, as city size increased accuracy likewise increased. Area of the city and Central Business District were important factors in detection. Late winter scenes were best for detection while late summer scenes were least favorable.
The Effects of Municipal Pumping from a Shallow Glacial Aquifer at Bryan, Northwestern Ohio
(1981-03) King, James M.; Ruedisili, Lon C.
The city of Bryan in northwestern Ohio has been recognized as the Fountain City because of its location within a well-known belt of flowing wells. Municipal pumping, however, has lowered the water table so that few wells in the vicinity of the city now flow naturally. The city plans to locate a new well field in its vicinity as the limits of its existing fields are approached. These plans have generated concern among local rural well owners who fear that a further decline in ground-water levels will necessitate deepening their shallow domestic wells or will require deeper pump installation. Some residents have offered alternatives to a new well field outside of Bryan including: (1) restricting the city to wells within its limits, (2) increasing the volume of ground-water withdrawn from existing wells, and (3) constructing a surface reservoir to meet future water requirements. As an alteranative, it is recommended that future well-field development focus upon a sparsely-populated area north of Bryan where significant thicknesses of sand and gravel are known to exist.
Ground-Level Magnetic Study of Greene County, Ohio
(1981-03) Obot, V. E. D.; Wolfe, Paul J.
We performed a ground level geomagnetic survey of Greene County, Ohio in the fall of 1976. The geomagnetic map showed a positive magnetic anomaly running from the northwestern section to the southeastern section of the county while the remainder of the map was relatively undisturbed. We analyzed the localized anomaly of the southeastern section by the Peters methods and by fitting to the model of a vertical rectangular prism magnetized along the earth's field. The Peters slope and half-slope methods gave maximum depth limits to the top of the body of 1.16 km and 1.08 km respectively. The best fit to the vertical prism model yielded a depth of 1.04±0.05 km, a width of 2.5 ±0.2 km, and a susceptibility contrast of +0.0039 cgs units. From the depth, we concluded that the source of the anomalies is intrabasement susceptibility variations.
Front Matter
(1981-03)

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