Ohio Journal of Science: Volume 100, Issue 2 (April, 2000)

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https://kb.osu.edu/handle/1811/22156

Front Matter
pp. 0
Article description | Article Full Text PDF (1510KB)

Survey of All Water Treatment Plant Operators Who Fluoridate Drinking Water in Ohio
Lalumandier, James A.; Hernandez, Leonor C.; Locci, Ana B. pp. 2-7
Article description | Article Full Text PDF (640KB)

An Ordinal Sequencing Technique for Assessing Multidimensional or Hierarchical Change Models
Kuleck, Walter J.; Knight, Catherine C. pp. 8-12
Article description | Article Full Text PDF (559KB)

Isolated LAD Revascularization in the Modern Era: Demographics and Preliminary Outcomes
Manneh, Arene; Newman, Isadore; Gross, Ann; Syron, Ed; Josephson, Richard pp. 13-18
Article description | Article Full Text PDF (594KB)

Do Leaves Control Episodic Shoot Growth in Woody Plants?
Deppong, David O.; Cline, Morris G. pp. 19-23
Article description | Article Full Text PDF (777KB)

Mortality of the Salt Marsh Species Salicornia Europaea and Atriplex Prostrata (Chenopodiaceae) in Response to Inundation
Egan, Todd P.; Ungar, Irwin A. pp. 24-27
Article description | Article Full Text PDF (408KB)

Book Reviews
pp. 28-29
Article description | Article Full Text PDF (231KB)

Reviewers of Manuscripts for The Ohio Journal of Science During 1999
pp. 30-30
Article description | Article Full Text PDF (78KB)

Back Matter
pp. 999
Article description | Article Full Text PDF (2263KB)

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    Mortality of the Salt Marsh Species Salicornia Europaea and Atriplex Prostrata (Chenopodiaceae) in Response to Inundation
    (2000-04) Egan, Todd P.; Ungar, Irwin A.
    Waterlogging and salinity are considered to be the two major factors affecting growth and plant distribution in salt marshes. But while the effects of salinity are well known, few studies have investigated the impact of the former on plant survival. The purpose of this laboratory experiment was to determine the effects of water level on growth and survival of the halophytes Salicornia europaea and Atriplex prostrata. Plants were grown in the laboratory at the following levels of inundation: 1) roots and shoots completely submerged (high water), 2) roots completely submerged (medium water), 3) water level at the bottom of the pot (low water). The high water treatment caused 100% mortality in both species within one week. Survival was high for both species when grown in the other treatments, but there was an indication of lower survival (70%) in the medium water treatment for A prostrata than in the low water treatment (90%) after three weeks submersion. There was no significant difference (P >0.05) in biomass production between medium and low water treatments in either species.
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    Do Leaves Control Episodic Shoot Growth in Woody Plants?
    (2000-04) Deppong, David O.; Cline, Morris G.
    It has been generally observed that leaf removal alters the pattern of episodic shoot growth in certain species in such ways that suggest some type of foliar control. In the present study, the effects of periodic defoliation during the growing season on the shoot growth of 11 woody species were analyzed in an attempt to elucidate the control mechanisms of episodic shoot growth. Four types of responses to defoliation were observed: A) A second flush in red oak, shagbark hickory, and year-old seedlings of green ash and sugar maple; B) A small continued extension of stem elongation with the production of some additional leaves and a significant delay in terminal bud formation in white ash, green ash, pignut hickory, black walnut, and in year-old seedlings of green ash and sugar maple; C) No response in sweetgum and white pine; and D) Shoot die-back in sugar maple, silver-red maple, cottonwood, black walnut, and to a lesser extent, the ashes. Defoliation was most effective and sometimes only effective in causing the above-mentioned responses when given early in the flush period. Leaf control of episodic shoot growth may be due to foliar inhibitors and/or effects of competition for water and nutrients.
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    Isolated LAD Revascularization in the Modern Era: Demographics and Preliminary Outcomes
    (2000-04) Manneh, Arene; Newman, Isadore; Gross, Ann; Syron, Ed; Josephson, Richard
    Revascularization of the left anterior descending coronary artery is an important, evolving and controversial topic. There are differences in patient selection, hospital stay and readmission, and hospital cost.
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    An Ordinal Sequencing Technique for Assessing Multidimensional or Hierarchical Change Models
    (2000-04) Kuleck, Walter J.; Knight, Catherine C.
    Many scientific disciplines involve the study of growth, development, evolution, or other kinds of multidimensional or hierarchical change processes. The order in which these changes occur can be important to the scientist. Further, understanding these changes may depend on determining not only the order in which they occur, but also the relationships among them. As the broader perspectives now obtaining in science challenge our previous assumptions of linearity and simple sequences, we increasingly require techniques that allow us to view change in a more complex, combining and branching fashion, but with the discipline of statistical rigor.
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    Survey of All Water Treatment Plant Operators Who Fluoridate Drinking Water in Ohio
    (2000-04) Lalumandier, James A.; Hernandez, Leonor C.; Locci, Ana B.
    Ohio like several other states in the US is mandated by law to optimally fluoridate all public water systems serving over 5000 people. The purpose of this study was three-fold: 1) to determine if Ohioans on public water supplies are receiving optimally fluoridated water, 2) to determine the knowledge level of water treatment plant operators who fluoridate drinking water, and 3) to compare small and large water treatment plants. A pre-tested survey was sent to all 224 water treatment plants that adjust the fluoride concentration of drinking water in Ohio. A 100% response rate was accomplished, with 93 small and 131 large water treatment plants responding. A z-test was computed to compare proportions between small and large water treatment plants. Significance was assessed at p <0.05. Nearly 90% of water treatment plant operators correctly identified the optimal fluoride level, however almost 30% used incorrect means of determining the optimal level. Approximately three-quarters of the water treatment plant operators were able to maintain the fluoride concentration to within 0.1 mg F/L of their optimal level. A significantly greater proportion of large water treatment plant operators were able to maintain a fluoride concentration to within 0.1 mg F/L of their optimum level when compared to small water treatment plant operators (83.2% vs 60.2%, z = 3.60, p <0.05). Most water treatment plant operators are knowledgeable concerning fluoride levels, however small water treatment plant operators may need additional technical assistance to reach the level attained by large plants.
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    Front Matter
    (2000-04)