Science teachers visit Amgen laboratories

Submitted on 30 June 2009 - 8:21am

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Simplified Pupal Surveys of Aedes aegypti (L.) for Entomologic Surveillance and Dengue Control

Submitted on 29 June 2009 - 10:54pm

This article is reproduced by CienciaPR with permission from the original source.

Pupal surveys of Aedes aegypti (L.) are useful indicators of risk for dengue transmission, although sample sizes for reliable estimations can be large. This study explores two methods for making pupal surveys more practical yet reliable and used data from 10 pupal surveys conducted in Puerto Rico during 2004–2008. The number of pupae per person for each sampling followed a negative binomial distribution, thus showing aggregation. One method found a common aggregation parameter (k) for the negative binomial distribution, a finding that enabled the application of a sequential sampling method requiring few samples to determine whether the number of pupae/person was above a vector density threshold for dengue transmission. A second approach used the finding that the mean number of pupae/person is correlated with the proportion of pupa-infested households and calculated equivalent threshold proportions of pupa-positive households. A sequential sampling program was also developed for this method to determine whether observed proportions of infested households were above threshold levels. These methods can be used to validate entomological thresholds for dengue transmission.

Clean Water Should Be a Human Right - Radiocápsula CPR/RCP

Submitted on 29 June 2009 - 9:41pm

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At the March 2009 United Nations (UN) World Water Forum, Canada, Russia, and the United States refused to support a decla- ration that would recognize water as a basic human right. The special resolution was proposed by Germany and Spain, and endorsed by the President of the UN General Assembly.

Master Science Teachers trained in Puerto Rico

Submitted on 25 June 2009 - 12:47pm

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New link between smoking and brain damage – Radiocápsula RCP/CPR

Submitted on 25 June 2009 - 9:09am

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Scientists from the Indian National Brain Research Center discover a direct link between smoking and neurological damage. The study will be published in the July issue of the Journal of Neurochemistry.

NUEVO! B.S. en Ciencias Espaciales en Morehead, KY

Submitted by Wilson Gonzalez-Espada on 10 June 2009 - 3:58pm

Hola: Rieguen la voz sobre este nuevo programa a nivel subgraduado en ciencias espaciales. Es uno de cuatro a nivel de los Estados Unidos. En Kentucky el costo de matricula es relativamente razonable! Wilson --- MSU offers space science degree Morehead State University has joined the ranks of Embry-Riddle, Florida Institute of Technology and City University of New York as the only universities in the United States to offer a Bachelor of Science degree in space science.