Portland Junior College Newsance, 05/11/1955

https://digitalcommons.usm.maine.edu/pjc_newsance/1004/thumbnail.jp

Portland Junior College Newsance, 03/18/1955

Calling All Beavers! -- Seniors Take Noticehttps://digitalcommons.usm.maine.edu/pjc_newsance/1011/thumbnail.jp

Portland Junior College Newsance, 02/24/1955

This Is It…The Big Supper Is Tonighthttps://digitalcommons.usm.maine.edu/pjc_newsance/1025/thumbnail.jp

Portland Junior College Newsance, 01/07/1955

Campus Court Martial: Failure To Attend And Support The School Dances At PJChttps://digitalcommons.usm.maine.edu/pjc_newsance/1008/thumbnail.jp

Portland Junior College Newsance, 10/06/1954

Don\u27t Forget To Attend The 1st Smoker Of The Year -- Come On And Bring Your Girl To The First Dance Of The Year On Friday -- Drama Club Formed At PJChttps://digitalcommons.usm.maine.edu/pjc_newsance/1049/thumbnail.jp

Freeze-thaw durability of concrete made with marginal aggregate (FHWA-OK-91-04) 2137

Much of the crushed limestone aggregate produced in the Oklahoma region is susceptible to freeze-thaw action and can result in popouts and D-cracking in concrete. Four series of tests involving over 120 batches of concrete were conducted to establish if adjustment of certain mix parameters would mitigate the detrimental properties of the aggregate. Freeze-thaw tests were conducted in accordance with Procedure A of ASTM C 666. The first series of tests demonstrated the importance of the maximum size of coarse aggregate on the durability of concrete. By reducing the maximum size from 1 in. to 1 /2 in., durability factors were increased from approximately 40 to 80. The second series of tests revealed that if the water-to-cement ratio is reduced below the range normally used for pavement construction, durable concrete can be made with ma rginal aggregate. The third and fourth series considered the addition of Class c fly ash or silica fume to the mix. In the case of Class C fly ash, concrete made with marginal aggregate from one source experienced no major influence from the presence of fly ash. The durability of the concrete increased with an increase of compressive strength regardless of the fly ash percentage. However, with concrete made with aggregate from another source, durability remained low regardless of strength. Silica fume did not appear to significantly alter the durability of concrete.Final Report January 1986-June 1991N

The Neglected Firm Effect on Stockholder Returns

John S. Jahera,, Jr., is an Associate Professor of Finance at Auburn University. William P. Lloyd is Professor and Head of the Department of Finance at Auburn University. Daniel E. Page is an Associate Professor of Finance at Auburn University

Direct Detection of the Brown Dwarf GJ 802B with Adaptive Optics Masking Interferometry

We have used the Palomar 200" Adaptive Optics (AO) system to directly detect the astrometric brown dwarf GJ 802B reported by Pravdo et al. 2005. This observation is achieved with a novel combination of aperture masking interferometry and AO. The dynamical masses are 0.175$\pm$0.021 M$_\odot$ and 0.064$\pm$0.032 M$_\odot$ for the primary and secondary respectively. The inferred absolute H band magnitude of GJ 802B is M$_H$=12.8 resulting in a model-dependent T$_\mathrm{eff}$ of 1850 $\pm$ 50K and mass range of 0.057--0.074 M$_\odot$.Comment: 4 Pages, 5 figures, emulateapj format, submitted to ApJ