Sign of the Times, October 2009

Newsletter produced by Deaf Services Commission of Iowa

Sign of the Times, November 2009

Newsletter produced by Deaf Services Commission of Iowa

Sign of the Times, December 2009

Newsletter produced by Deaf Services Commission of Iowa

Sign of the Times, January 2010

Newsletter produced by Deaf Services Commission of Iowa

Sign of the Times, February 2010

Newsletter produced by Deaf Services Commission of Iowa

Climatic and biotic upheavals following the end-Permian mass extinction

Recovery from the end-Permian mass extinction is frequently described as delayed(1-3), with complex ecological communities typically not found in the fossil record until the Middle Triassic epoch. However, the taxonomic diversity of a number of marine groups, ranging from ammonoids to benthic foraminifera, peaked rapidly in the Early Triassic(4-10). These variations in biodiversity occur amidst pronounced excursions in the carbon isotope record, which are compatible with episodes of massive CO2 outgassing from the Siberian Large Igneous Province(4,11-13). Here we present a high-resolution Early Triassic temperature record based on the oxygen isotope composition of pristine apatite from fossil conodonts. Our reconstruction shows that the beginning of the Smithian substage of the Early Triassic was marked by a cooler climate, followed by an interval of warmth lasting until the Spathian substage boundary. Cooler conditions resumed in the Spathian. We find the greatest increases in taxonomic diversity during the cooler phases of the early Smithian and early Spathian. In contrast, a period of extreme warmth in the middle and late Smithian was associated with floral ecological change and high faunal taxonomic turnover in the ocean. We suggest that climate upheaval and carbon-cycle perturbations due to volcanic outgassing were important drivers of Early Triassic biotic recovery.

Sign of the Times, March 2010

Newsletter produced by Deaf Services Commission of Iowa

Life Times, Winter 2010

Newsletter by IPERS about Iowa Public Employees’ Retirement System news for retirees.

Sign of the Times, April 2010

Newsletter produced by Deaf Services Commission of Iowa

Sign of the Times, May 2010

Newsletter produced by Deaf Services Commission of Iowa

Tasini v. The New York Times: aspectos bibliotecarios

La revista mensual de la Special Libraries Association(SLA), Información Outlook, publica usualmente una columna fija dedicada a cuestiones de copyright. En el número de septiembre de 2001 el artículo se titulaba ¿Tasini: capítulo final¿, y explicaba la resolución del litigio que enfrentó a escritores freelance (los que trabajan por cuenta propia) contra sus antiguas empresas, como el New York Times (NYT), etc. Sin embargo, como en un buen misterio de asesinatos en el que el muerto reaparece, el título de la columna de octubre fue ¿¡El caso que no muere!¿.

Sign of the Times, June 2010

Newsletter produced by Deaf Services Commission of Iowa

Sign of the Times, July 2010

Newsletter produced by Deaf Services Commission of Iowa

Sign of the Times, August 2010

Newsletter produced by Deaf Services Commission of Iowa