ELASTIC SCATTERING OF 20-MEV. PROTONS BY OXYGEN AND NITROGEN

1957 ◽  
Vol 35 (2) ◽  
pp. 184-194 ◽  
Author(s):  
R. H. Chow ◽  
Byron T. Wright

The absolute angular distributions for 20-Mev. protons elastically scattered by O16 and N14 were determined using the external beam of the frequency-modulated cyclotron at the University of California, Los Angeles. The distributions for the two elements were found to be similar except for the appearance of a more pronounced first minimum in the O16 distribution. The locations of the maxima and minima seem to indicate that simple diffraction effect is responsible for their presence. The cross sections range from about 1 barn per sterad. to 4 mb. per sterad. between 15° and 165° in the laboratory system. The standard deviations due to statistics range from [Formula: see text] to 10%.

2020 ◽  
Vol 2 (3) ◽  
pp. 53-59

The California missions, whose original church spaces and visual programs were produced by Iberian, Mexican, and Native artisans between 1769 and 1823, occupy an ambiguous chronological, geographical, and political space. They occupy lands that have pertained to conflicting territorialities: from Native nations, to New Spain, to Mexico, to the modern multicultural California. The physical and visual landscapes of the missions have been sites of complex and often incongruous religious experiences; historical trauma and romantic vision; Indigenous genocide, exploitation, resistance, and survivance; state building and global enterprise. This Dialogues section brings together critical voices, including especially the voices of California Indian scholars, to interrogate received models for thinking about the art historical legacies of the California missions. Together, the contributing authors move beyond and across borders and promote new decolonial strategies that strive to be responsive to the experience of California Indian communities and nations. This conversation emerges from cross-disciplinary relationships established at a two-day conference, “‘American’ Art and the Legacy of Conquest: Art at California’s Missions in the Global 18th–20th Centuries,” sponsored by the Terra Foundation for American Art and held at the University of California, Los Angeles, in November 2019.


Urology ◽  
2010 ◽  
Vol 75 (6) ◽  
pp. 1418-1423 ◽  
Author(s):  
Jonathan Bergman ◽  
Christopher S. Saigal ◽  
Lorna Kwan ◽  
Mark S. Litwin

PEDIATRICS ◽  
1969 ◽  
Vol 44 (6) ◽  
pp. 1041-1043

The Variety Children Hospital Annual Pediatric Postgraduate Course, "Current Pediatric Therapy," will be held at Miami Beach, January 25-29, 1970. A faculty of more than 20 speakers will be under the Chairmanship of Donald H. Altman, M.D. For application write Dr. Altman at Variety Children Hospital, Miami, Florida 33155. Symposium on Immunologic Incompetence: The Departments of Pediatrics of Cedars-Sinai Medical Center and the University of California at Los Angeles, and the Johnson and Johnson Institute for Pediatric Service are sponsoring a symposium on Immunologic Incompetence in Fort Lauderdale, Florida, March 1-4, 1970.


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