Input-output subroutine package UOM IOS FOR the IBM 7090/7094

Input-output subroutine package for IBM 7090/7094 computer monitoring system

Meet me at the fountain /

https://digitalcommons.library.umaine.edu/mmb-vp/4532/thumbnail.jp

Apical Leakage of a New Root Canal Sealer

A new endodontic root canal sealer, iRoot SP, has been introduced. This bioceramic root canal sealer claims to be a superior sealing and filling material for root canals. Although the manufacturer advocates the use of a single cone technique with this sealer, they state that it may also be used with lateral compaction and warm vertical condensation. The purpose of this study was to compare in vitro apical microleakage of iRoot SP root canal sealer to AH Plus sealer when used in conjunction with a single cone technique and lateral compaction technique.;Eighty six mesial roots of mandibular molar teeth with mature apices were randomly divided into four experimental groups along with a positive and negative control groups. Teeth were cleaned and sectioned at the CEJ with high speed hand piece and water coolant. All teeth were pre-flared with S1 and S2 Protaper Universal (DENTSPLY RTM) NiTi rotary files. Then the teeth were instrumented to a #30 .06 taper master apical file with Brasseler RTM Endosequence Niti rotary files in a crown down technique. Teeth were then divided into the groups: Group A- lateral condensation technique with iRoot Sp, Groups B- lateral condensation with AH Plus, Group C- single cone technique with iRoot SP, Group D- single cone with AH Plus, positive control (obturation with no sealer), and negative control (no obturation with two layers of varnish covering entire root). Teeth were allowed to soak in 1 % methylene blue dye under vacuum (390 torr) and for an additional 7 days once the seal was broken. The clearing process consisted of 24 hours in 5% nitric acid, 24 hours in 80% ethyl alcohol, 24 hours in 99.8% ethyl alcohol, and the roots became transparent after 48 hours in 99 % methyl salicylate. Two second year endodontic residents along with a dental hygienist graded the apical dye penetration a measuring microscope.;None of the negative controls showed any leakage and all of the positive control showed leakage the entire length of the root. Of the 86 specimens starting the study, 4 did not clear properly and were excluded from the study leaving a total of 82. In the iRoot SP group, the mean apical leakage in group A was 0.83mm +/- 0.15, and 0.63mm +/- 0.13 for group C. In the AH Plus group, the mean apical leakage was 1.63mm +/- 0.13 in group B, and 0.42mm +/- 0.14 in group D.;Comparable levels of apical leakage were found between iRoot SP (single cone and lateral compaction) and AH plus single cone. AH plus with lateral compaction had statistically more apical dye leakage that the other groups. None of the negative controls showed any leakage and all of the positive controls demonstrated leakage supporting the experimental design. This in vitro study supports the use of the sealers AH Plus or iRoot SP in combination with .06 taper gutta-percha points in the obturation of .06 canal preparations

Interpretive methodologies utilized from 1850-1990 on Amos 7-9

https://place.asburyseminary.edu/ecommonsatsdissertations/1972/thumbnail.jp

MAMOS - A monitor system under IBSYS for the IBM 7090/7094

MAMOS - monitor system under IBM basic monitor for IBM 7090/7094 compute

Vibration analysis of clustered launch vehicles

Vibration analysis of clustered launch vehicle

Teaching the mathematics that teachers need to know: Classroom ideas for supporting prospective elementary teachers’ development of mathematical knowledge for teaching

The goal of this article is to articulate aspects of mathematical knowledge for teaching (MKT) that should be addressed in college mathematics content courses for prospective teachers (PTs), and to make research- and practice-based recommendations of class activities, materials, and strategies in support of developing this knowledge. We describe class activities that engage PTs in problem solving as a means of making sense of the content that they will later teach and that immerse them in the mathematics practices that they will later need to foster with their own students. We also provide examples of how mathematics manipulatives, school curriculum materials, and samples of children’s thinking can be integrated as instructional tools in content courses. In developing these activities, we were guided by the research regarding the depth and breadth of knowledge required for the effective teaching of mathematics at the early childhood and upper elementary levels, and by the recommendations of professional organizations for math teacher education

A Worlde of Wordes: Dictionaries and the Rise of Middle English Lexicography

From the first vision and first articulation of plans for national and period dictionaries of English to the completion of the Middle English Dictionary, decades, even lifetimes, have passed. Begun tentatively at Oxford and Cornell Universities, the project got underway in earnest at the University of Michigan in 1930. Seventy-one years later the last fascicle was sent to the publisher and thirteen volumes comprised of 55,000 entries and over 900,000 quotations were completed. "A Worlde of Wordes" honors the men and women, the process, and the scholarship responsible for this feat.http://deepblue.lib.umich.edu/bitstream/2027.42/120289/1/worlde_of_wordes_01.pd

"Makeup on Empty Space": a Celebration of Anne Waldman: An Exhibit

"Makeup on empty space" celebrates the opening of the Anne Waldman archive at the University of Michigan Library. This archive is as exciting and dynamic as the poet herself, showing many fascinating examples of how Anne Waldman works through her correspondence, working manuscripts, published books, audio and video tapes, and photographs covering her life and career.http://deepblue.lib.umich.edu/bitstream/2027.42/120261/1/makeup_on_empty_space_02.pd