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3,070 results on '"Norton, M"'

151. The Work of the School Principal in the Area of Human Resources Administration in Arizona.

Author

Norton, M. Scott

Abstract

One hundred Arizona elementary and secondary principals were asked to detail their responsibilities in human-resource administration; 74 responded. Specifically, staff selection, staff assignment, and organizational climate received responses above the 90% level, followed by staff development, staff evaluation, and staff orientation--all basic administrative functions. (MLH)

Published
1999

158. Teacher Absenteeism: A Growing Dilemma in Education.

Author

Norton, M. Scott

Abstract

Teacher absenteeism is an ongoing problem. This paper examines findings from research centered on who is absent from teaching and when, causes for teacher absences, absenteeism and student achievement, the relationship between school climate and employee absences, and the impact of various incentives on teacher absenteeism. Recommendations for alleviating the problem are noted. (SM)

Published
1998

166. The dynamics of apoplast phenolics in tobacco leaves following inoculation with bacteria

Author

Con Jacyn Baker, Norton M. Mock, Jodi M. Smith, and Andrey A. Aver'Yanov

Subjects
Acetophenones, Chlorogenic Acid, Disease, Pseudomonas fluorescens, induced, recognition, Plant culture, SB1-1110
Abstract

This study demonstrates that the accumulation of apoplastic phenolics is stimulated in planta in response to bacterial inoculation. Past studies have shown that levels of extracellular phenolics are elicited in plant cell suspensions in response to bacteria, and that tomato plants infected with viroids showed changes in apoplastic phenolics. The method described here monitored changes in apoplastic phenolics in tobacco leaves following bacterial inoculation of the same tissue. Inoculation with a saprophyte, Pseudomonas fluorescens, which does not cause visible symptoms or physical damage, was used to elicit phenolics and examine the effects of variable parameters on phenolic composition. Location of the inoculation on the leaf, position or developmental age of the leaf on the plant, and inoculum concentration were standardized for further experiments. The patterns of phenolic change in the apoplast were compared for tobacco inoculated with P. syringae pathovars, pv. syringae, which causes a resistant HR reaction within 15 h, and pv. tabaci, which causes a susceptible reaction with delayed visible symptoms. Both pathogens elicited lower increased levels of acetosyringone compared to the saprophyte, P. fluorescens but had greatly increased levels of the chlorogenic acid derivatives. The latter metabolites appear to have come from the intracellular stores, which could

Published
2015
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168. The School Superintendency: New Responsibilities, New Leadership.

Author

Norton, M. Scott, Webb, L. Dean, Dlugosh, Larry L., Norton, M. Scott, Webb, L. Dean, and Dlugosh, Larry L.

Abstract

School superintendents hold some of the most challenging, yet satisfying, positions in American society. Many times, the human element largely determines the effectiveness and success of a school system, and that element is the subject of this text. The volume claims that the extent to which all school personnel perform competently is influenced by the superintendent's leadership. The text focuses on the school superintendent as an individual and as an educational leader. The book is organized into three parts. Part 1 centers on the challenges facing the school superintendency today and in the future. It discusses the evolution of the position and the many challenges that grew with the job. Some of the forces that weigh on the school superintendency, the increasing need for futuristic planning strategies, governance policy, and legal considerations are covered in part 2. The last section focuses on the specific responsibilities of the school superintendent, with an analysis of the complexity and comprehensiveness of the superintendent's role. Emphasis is placed on fiscal management, the planning of educational facilities, curriculum and instruction, work with employee groups, human resources administration, the student personnel program, and relationships with the school district. (Includes an index.) (RJM)

Published
1996

173. Fetal hydrops and the Incremental yield of Next‐generation sequencing over standard prenatal Diagnostic testing ( FIND ) study: prospective cohort study and meta‐analysis

Author

Mone, F., primary, Eberhardt, R. Y., additional, Hurles, M. E., additional, Mcmullan, D. J., additional, Maher, E. R., additional, Lord, J., additional, Chitty, L. S., additional, Dempsey, E., additional, Homfray, T., additional, Giordano, J. L., additional, Wapner, R. J., additional, Sun, L., additional, Sparks, T. N., additional, Norton, M. E., additional, and Kilby, M. D., additional

Published
2021
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176. Redox- and bio-activity of apocynin (acetovanillone) in tobacco, a plant phenolic that alleviates symptoms of autoimmune diseases in animals

Author

Andrey A. Aver'yanov, C. Jacyn Baker, and Norton M. Mock

Subjects
0106 biological sciences, 0301 basic medicine, NADPH oxidase, biology, fungi, food and beverages, Plant Science, Secondary metabolite, 01 natural sciences, Horseradish peroxidase, Apoplast, In vitro, 03 medical and health sciences, chemistry.chemical_compound, 030104 developmental biology, chemistry, Biochemistry, Myeloperoxidase, Apocynin, Genetics, biology.protein, medicine, Pseudomonas syringae, 010606 plant biology & botany, medicine.drug
Abstract

Apocynin (APO) was shown to be the major constituent of early herbal medicines used to reduce painful suffering from many ailments. Because of its proven utility in rat models, it is now an active candidate for treating humans for several major autoimmune diseases such as Alzheimer's, arthritis, and cardiovascular diseases. In plant research, APO is referred to as acetovanillone, a secondary metabolite that is induced in the leaf apoplast during bacterial invasion. Since its role in plants is unknown, we examined whether any of the attributes found in medical studies could found in plants. In medical studies, APO is considered to be an NADPH oxidase (NOX) inhibitor, however when tested in tobacco suspension cells, APO failed to inhibit NOX activity. In addition, when APO was used to pretreat plants against virulent or avirulent pathovars of Pseudomonas syringae, there was no reduction of symptoms. When pathovars were incubated with 100 μM APO for 90 min, there was only a slight decrease in the bacterial population, suggesting that it was not toxic. In animals, a key step for the inhibition of NOX by APO appears to be its oxidation by myeloperoxidase, yielding dimers and trimers. In vitro studies using pH 6, which is more comparable the plant environment, APO oxidation by horseradish peroxidase yielded similar products. We monitored the redox potential during some of these experiments, trying to begin looking at this parameter, which like pH, can have a more global effect on closed systems such as the apoplast. Phenolics such as APO that are induced upon bacterial ingress, seem likely to play a role in the plant bacterial interaction, but it will require additional and creative research to find and fully understand this role.

Published
2019

179. Practical Alternatives to Student Retention.

Author

Norton, M. Scott

Abstract

This article examines student retention in grades, presenting five suggestions for dealing with the fact that it continues despite evidence that it is not beneficial. Strategies include closing the gap between research and practice, implementing remediation programs, implementing success strategies, and restructuring classroom organization. (SM)

Published
1990

183. A Tribute to William A. Paton

Author

Taggart, Herbert F., Bedford, Norton M., Chambers, R. J., Davidson, Sidney, Devine, Carl Thomas, Dyckman, Thomas R., Ijiri, Yuji, Keller, Thomas F., and Nichols, Robert G.

Published
1992

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