We demonstrate the effectiveness of the nonlocal means (NLM) filter for speckle denoising in digital holography. The speckle noise adapted version of the NLM filter is compared with other common speckle denoising filters and is found to give better visual and quantitative results.

Medical librarians have often been overlooked as important contributors to hospital disaster preparedness. Recognizing the importance of medical libraries and their potential in disaster planning and management, the National Library of Medicine (NLM), Disaster Information Management Research Center (DIMRC), formed a pilot Disaster Information Specialist Project. This paper describes the prelimi...

The study aims to outline the current view of the scientific production on counseling psychology from the analysis of theses and dissertations defended in the postgraduation program within the Brazilian context. The searches were carried out in the Digital Library of Theses and Dissertations at USP along with CAPES theses database. Thirteen dissertations were recovered and five theses were defe...

2011 marks the 175th anniversary of the United States National Library of Medicine (NLM) that traces its origins to 1836 and the commitment of the second US Army Surgeon General, Thomas Lawson (1789–1861), to purchase books and journals for activeduty medical officers. The occasion affords an opportunity to focus on the contributions of the NLM to the history of medicine and public health, and ...

Intensity variations over time in resting BOLD fMRI exhibit spatial correlation patterns consistent with a set of large scale cortical networks. However, visualizations of this data on the brain surface, even after extensive preprocessing, are dominated by local intensity fluctuations that obscure larger scale behavior. Our novel adaptation of non-local means (NLM) filtering, which we refer to ...

introduction: macroprolactin is a significant cause of misdiagnosis, unnecessary investigation, and inappropriate treatment in patients with hyperprolactinemia. its frequency has not been clearly established due to technical difficulties in identifying it. most laboratories and clinicians are unaware of macroprolactin interferences in prolactin assays. materials and methods: a comprehensive lit...

This very welcome bibliography-a by-product of Index medicus-was produced in the National Library of Medicine's Historical Division. Its citations were retrieved from the computer into which indexers now regularly feed information culled from the medical periodical literature. What a far remove this is from the Index's early days, almost ninety years ago, when only the unnatural faith of a publ...

The National Library of Medicine (NLM) is the world's largest medical Library. Its collections total some 6 million items and NLM also sponsors a variety of key databases in the medical field. This article traces the history and the strategies of the Library from the origins until today.