Polarized Diffuse Emission at 2.3 GHz in a High Galactic Latitude Area

Polarized diffuse emission observations at 2.3 GHz in a high Galactic latitude area are presented. The 2\degr X 2\degr field, centred in (\alpha=5^h,\delta=-49\degr), is located in the region observed by the BOOMERanG experiment. Our observations has been carried out with the Parkes Radio telescope and represent the highest frequency detection done to date in low emission areas. Because of a weaker Faraday rotation action, the high frequency allows an estimate of the Galactic synchrotron contamination of the Cosmic Microwave Background Polarization (CMBP) that is more reliable than that done at 1.4 GHz. We find that the angular power spectra of the E- and B-modes have slopes of \beta_E = -1.46 +/- 0.14 and \beta_B = -1.87 +/- 0.22, indicating a flattening with respect to 1.4 GHz. Extrapolated up to 32 GHz, the E-mode spectrum is about 3 orders of magnitude lower than that of the CMBP, allowing a clean detection even at this frequency. The best improvement concerns the B-mode, for which our single-dish observations provide the first estimate of the contamination on angular scales close to the CMBP peak (about 2 degrees). We find that the CMBP B-mode should be stronger than synchrotron contamination at 90 GHz for models with T/S > 0.01. This low level could move down to 60-70 GHz the optimal window for CMBP measures.Comment: 5 pages, 6 figures, accepted for publication in MNRAS Letter

The Ursinus Weekly, February 8, 1937

Ursinus campus is sorrowed by death of president emeritus George Leslie Omwake • Poley wins May pageant choice • Many favored men to dance to George Craig\u27s strains • Fraternity bids to be extended tomorrow; today marks beginning of sorority rushing • Forum hears German woman on youth, feminist movements • Bear wrestlers lose close tourney with Temple, 20-18 • Hedgerow to present three productions in two nights • Second volume of Shakespeare edited by McClure, Holzknecht • Curtain Club to present Ghost train on road trip • Co-ed sextet swamps Bryn Mawr in first court meet • Editorial: Should fraternities be abolished? • Joint Y\u27s to hold discussion on race prejudice in panel • Roberta Byron to conjure for Women\u27s Club benefit • Co-eds to settle labor strike in Debating Club mock parley • I.R.C. to discuss Germany • F. & M. hands bears seventh defeat, 37-26 • Snyder leads in scoring as Brodbeck captures first half • Villanova, Swarthmore defeat bear courtmen • Kellett\u27s courtmen lose to Villanova in overtimehttps://digitalcommons.ursinus.edu/weekly/1920/thumbnail.jp

Assessment of the relationships between myocardial contractility and infarct tissue revealed by serial magnetic resonance imaging in patients with acute myocardial infarction

Imaging changes in left ventricular (LV) volumes during the cardiac cycle and LV ejection fraction do not provide information on regional contractility. Displacement ENcoding with Stimulated Echoes (DENSE) is a strain-encoded cardiac magnetic resonance (CMR) technique that measures strain directly. We investigated the relationships between strain revealed by DENSE and the presence and extent of infarction in patients with recent myocardial infarction (MI). 50 male subjects were invited to undergo serial CMR within 7 days of MI (baseline) and after 6 months (follow-up; n = 47). DENSE and late gadolinium enhancement (LGE) images were acquired to enable localised regional quantification of peak circumferential strain (Ecc) and the extent of infarction, respectively. We assessed: (1) receiver operating characteristic (ROC) analysis for the classification of LGE, (2) strain differences according to LGE status (remote, adjacent, infarcted) and (3) changes in strain revealed between baseline and follow-up. 300 and 258 myocardial segments were available for analysis at baseline and follow-up respectively. LGE was present in 130/300 (43 %) and 97/258 (38 %) segments, respectively. ROC analysis revealed moderately high values for peak Ecc at baseline [threshold 12.8 %; area-under-curve (AUC) 0.88, sensitivity 84 %, specificity 78 %] and at follow-up (threshold 15.8 %; AUC 0.76, sensitivity 85 %, specificity 64 %). Differences were observed between remote, adjacent and infarcted segments. Between baseline and follow-up, increases in peak Ecc were observed in infarcted segments (median difference of 5.6 %) and in adjacent segments (1.5 %). Peak Ecc at baseline was indicative of the change in LGE status between baseline and follow-up. Strain-encoded CMR with DENSE has the potential to provide clinically useful information on contractility and its recovery over time in patients with MI

The Role of Science Institutions in Our Civilization

This booklet prints the Founders\u27 Day address delivered by Dr. William D. Coolidge at Ursinus College on October 13, 1942, as well as a speech by Dr. George E. Pfahler and others.https://digitalcommons.ursinus.edu/founders_programs/1067/thumbnail.jp

The Ursinus Weekly, October 21, 1940

Democrats due tomorrow for rally in gymnasium • Haines group supports Willkie but says FDR will win in November • Bears don wings to swoop down on Blue Hens, 25-0 • Student from Near East is speaker at vespers • Moritz paints picture of life in Chinese colleges • Agan appoints committees as juniors plan year\u27s activities • Pre-legal society to hear about criminal law action • Vocalists from Phila. Opera Company please in musical • College president is named head of local draft board • IRC to discuss new eastern axis at afternoon session • Bears take to passing for air raid on Delaware Hens • F.M. penalty kick takes soccer game from booters, 1-0 • Men\u27s debating society admits two juniors and four frosh • Women debaters hear report on college debate conference • McClure represents Ursinus at Haverford inauguration • Freshmen entertained at tea by the combined YM-YWCA • Noted scholar reviews book written by president McClure • Carter and Miller journey to convention of history associationhttps://digitalcommons.ursinus.edu/weekly/1795/thumbnail.jp

Distinct Signatures For Coulomb Blockade and Aharonov-Bohm Interference in Electronic Fabry-Perot Interferometers

Two distinct types of magnetoresistance oscillations are observed in two electronic Fabry-Perot interferometers of different sizes in the integer quantum Hall regime. Measuring these oscillations as a function of magnetic field and gate voltages, we observe three signatures that distinguish the two types. The oscillations observed in a 2.0 square micron device are understood to arise from the Coulomb blockade mechanism, and those observed in an 18 square micron device from the Aharonov-Bohm mechanism. This work clarifies, provides ways to distinguish, and demonstrates control over, these distinct physical origins of resistance oscillations seen in electronic Fabry-Perot interferometers.Comment: related papers at http://marcuslab.harvard.ed

Successful small bowel allotransplantation in dogs with cyclosporine and prednisone

Twelve dogs had transplantation of almost the entire small intestine in the orthotopic location; immunosuppression was with cyclosporine and prednisone. Half the dogs had survival of at least one month, and a third lived for at least four months. Two of the animals are still living after 550 and 555 days. Maintenance of nutrition, and absorption of D-xylose and fat were better than in control animals with an iatrogenic short gut syndrome, but distinctly worse than that of normal dogs. © 1984 by The Williams and Wilkins Co

Ursinus College Alumni Journal, Spring 1941

Current comment • President\u27s page • Campus notes: Founders Day celebration transferred to autumn; Haines \u2703 and Deininger \u2715 take leading parts in commencement program; Speakers; May pageant • Alumni Association nominates officers for coming year • Messiah • Ursinus Woman\u27s Club holds successful card party • Hands across Panama theme for all-Ursinus conference • Winter sports • About ourselves • 71st annual commencementhttps://digitalcommons.ursinus.edu/alumnijournal/1011/thumbnail.jp

Ursinus College Alumni Journal, Summer 1939

Current comment • President\u27s page • 69th annual commencement • Spring sports • Woman\u27s dormitory group planned • About ourselves • 1939 varsity football schedulehttps://digitalcommons.ursinus.edu/alumnijournal/1006/thumbnail.jp