Belt charging system

In M.P. accelerators belts have encountered some difficulties mainly about the belt life time. In the belt charging system, parameters are investigated and some of them are pointed out as being partly responsible either for belt deterioration or for belt ripple. Experiments are and will be carried out to surround the actual belt limitations

The Ursinus Weekly, October 15, 1928

Campus activities to be reorganized under three major groups • Patsy to be given on dad\u27s day, November 10 • Poverty day a feature for old timers\u27 Saturday • Hoover is Ursinus choice in Weekly\u27s straw vote • Frosh hold Muhlenberg yearlings to 0-0 score • Grizzlies claw F. & M. 12-0 • The college announces two chapel speakers • Celebrate bears\u27 victory at first council dance • Vaudeville & parade were indexes of student pep • Woman\u27s Club to sponsor novel dorm fund plan • Senior girls to be guests at luncheon Saturday • Alumni Athletic Club meets Saturday • Card party and dance • Lost Lake hike • MSGA revised constitution • High school puts up stiff fight in hockey game • Y.M.C.A. holds reorganization smoker • Organ concert next Sunday • Frosh to play Keystone Academyhttps://digitalcommons.ursinus.edu/weekly/2160/thumbnail.jp

A discrete model for studying existence and uniqueness of solutions in nonlinear resistive circuits

AbstractTwo combinatorial problems raised by the fundamental question of the existence and uniqueness of solutions in nonlinear electric circuits are presented. The first problem, namely the existence of a pair of conjugate trees, has been solved in polynomial time using an original model based on matroïd intersection. For the second problem, which is the search of a particular orientation in a multigraph with labeled edges, an elaborate branch and bound procedure is proposed

The Ursinus Weekly, November 12, 1928

Senior class presents The Patsy Saturday evening • Dr. J. M. S. Isenberg speaks at school of religion • Second annual dad\u27s day banquet held on Saturday • Bears bow to Drexel Dragons in last home game of season 13-0 • Yearlings defeated by Beckley College, score 8-0 • Election day a holiday on the Ursinus campus • Ursinus Biology Club reorganizes Thursday evening • Boxing and wrestling get under way at Ursinus • Ursinus debating league meets in Bomberger Hall • English Club meets in Maples Wednesday evening • Women to debate on jury system - tryouts November 10 • Women\u27s Club about to launch hosiery campaign • Consistorial dinner given the Philadelphia classis • Co-eds send Drexel home with a 10-2 hockey defeat • Chinese missionary addresses Y girls • Mrs. Webb\u27s cherubs bow down to anti-Webb boys • Y.W. girls staging a tour around the world • The Y in Chinese ways • 59,948 enroll in colleges • Collegeville A. A. present the Keystone Minstrels • U to battle Swarthmore • P.M.C. coach at pep meetinghttps://digitalcommons.ursinus.edu/weekly/2164/thumbnail.jp

The Ursinus Weekly, February 25, 1929

Men\u27s Glee Club presents concerts in coal region • The Patsy appears at Victor Theater, Pottstown • Cast chosen for The cat and the canary • Bears bow to ancient rivals on the court • Week of prayer to be sponsored by YM-YW • Women\u27s Glee Club sings in York, Pennsylvania • Curtis concert to be given Thursday evening • St. Elmo to be presented for benefit of 1930 Ruby • Women hear well-known speakers • Lorelei dance proves a big success • Senior ball tickets being disposed rapidly • American legion entertains • Frosh debaters win • Junior and senior classes elect officers for year • Coeds lose first to Drexel • Fire co. to hold dance in gym on Tuesday night • Dr. Isenberg to preach in Zurich during summer • The two generations of Ursinus • International Relations Club organized • Webster forensic clubhttps://digitalcommons.ursinus.edu/weekly/2176/thumbnail.jp

Chemically active substitutional nitrogen impurity in carbon nanotubes

We investigate the nitrogen substitutional impurity in semiconducting zigzag and metallic armchair single-wall carbon nanotubes using ab initio density functional theory. At low concentrations (less than 1 atomic %), the defect state in a semiconducting tube becomes spatially localized and develops a flat energy level in the band gap. Such a localized state makes the impurity site chemically and electronically active. We find that if two neighboring tubes have their impurities facing one another, an intertube covalent bond forms. This finding opens an intriguing possibility for tunnel junctions, as well as the functionalization of suitably doped carbon nanotubes by selectively forming chemical bonds with ligands at the impurity site. If the intertube bond density is high enough, a highly packed bundle of interlinked single-wall nanotubes can form.Comment: 4 pages, 4 figures; major changes to the tex

Appendicitis and diverticulitis of the colon: Misleading forms

AbstractAppendicitis and diverticulitis of the colon are the two main causes of febrile acute abdomen in adults. Diagnosis from imaging (ultrasound and CT) is usually easy. However, an imaging procedure which is not suitable for the clinical situation and an examination performed with the wrong protocol are sources of error and must be avoided. Anatomical variants, inflammatory cancers, complicated forms (perforation, secondary occlusion of the small intestine, peripheral abscesses, fistulae, pylephlebitis, liver abscesses) and associated signs related to a peritoneal inflammatory reaction (reflex ileus, reactive ileitis or salpingitis) can also lead to a wrong diagnosis

Microstructural Characterization of Graphite Spheroids in Ductile Iron

The present work brings new insights by transmission electron microscopy allowing disregarding or supporting some of the models proposed for spheroidal growth of graphite in cast irons. Nodules consist of sectors made of graphite plates elongated along a hai direction and stack on each other with their c axis aligned with the radial direction. These plates are the elementary units for spheroidal growth and a calculation supports the idea that new units continuously nucleate at the ledge between sectors