2006 Elsevier Impact Factors

["Menefee, Daviess (ELS-NYC)" <D.Menefee@elsevier.com>]

For immediate release.

Elsevier announces Significant Increases in Impact Factors

More than 65% of Elsevier Journals increased in impact factor in 
2006, with top rankings in 53 categories, according to the 2006 
Journal Citation Reports(c)

Amsterdam - July 18, 2007 - Elsevier, the leading publisher of 
scientific, technical and medical information products and 
services, today announced that more than 65 percent of its 
journals improved in impact factor, as reported in the 2006 
Journal Citation Reports.  In addition, 53 Elsevier titles ranked 
number one in their respective categories, including:  Seminars 
in Radiation Oncology (#1 in Radiology); Landscape and Urban 
Planning (#1 in Urban Studies); Gastroenterology (#1 in 
Gastroenterology & Hepatology); Annals of Emergency Medicine (#1 
in Emergency Medicine); The Journal of Allergy and Clinical 
Immunology (#1 in Allergy), Biomaterials (#1 in Materials 
Science, Biomaterials); and Journal of Catalysis (#1 in 
Engineering, Chemical).

"The continued increase in impact factors across our journals in 
both Science & Technology and Health Sciences demonstrates 
progress in building world class content, reflecting the 
dedicated effort of our editors and publishing staff," said Mayur 
Amin, Senior Vice President, Research and Academic Relations.

The impact factor is a measure of the frequency with which the 
average article in a journal has been cited in a particular year. 
The impact factor helps to evaluate a journal's relative 
importance, especially when compared with others in the same 
field.

Other notable results among Elsevier Journals include:

The Lancet continued to surge ahead in medicine and confirmed its
position as the second highest ranked journal in the field with a two
point increase in Impact Factor.

Cancer Cell and Immunity, two Cell Press journals, also showed 
significant increases in Impact Factor, adding over five and 
three points to their Impact Factors respectively.

Biochimica et Biophysica Acta-Molecular Cell Research, Elsevier's 
oldest and biggest biochemistry journal, increased its impact 
factor substantially from 4.8 to 6.9 in 2006.

Elsevier has the top four ranked titles in the electrochemistry 
category: 1) Biosensors and Bioelectronics; 2) Journal of Power 
Sources; 3) Electrochemistry Communications; and, 4) 
Electrochimica Acta.

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