Search results
Results from the WOW.Com Content Network
The PRISMA flow diagram, depicting the flow of information through the different phases of a systematic review. PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) is an evidence-based minimum set of items aimed at helping scientific authors to report a wide array of systematic reviews and meta-analyses, primarily used to assess the benefits and harms of a health care ...
The earliest reference to a specific magnetic "direction finder" device for land navigation is recorded in a Song dynasty book dated to 1040–44. There is a description of an iron "south-pointing fish" floating in a bowl of water, aligning itself to the south. The device is recommended as a means of orientation "in the obscurity of the night."
Expert Review of Medical Devices is a monthly peer-reviewed medical journal covering research on the clinical use of devices. It was established in 2004 and is published by Informa . According to the Journal Citation Reports , the journal has a 2013 impact factor of 1.784.
WASHINGTON (Reuters) -The U.S. Supreme Court on Thursday revived part of an Arizona voter law requiring documented proof of U.S. citizenship to register to vote, in response to a request from the ...
A wooden tripod holding an optical level is set up firmly on the ground. Levelling or leveling (American English; see spelling differences) is a branch of surveying, the object of which is to establish or verify or measure the height of specified points relative to a datum.
Logo of the Cass Review. The Independent Review of Gender Identity Services for Children and Young People (commonly, the Cass Review) was commissioned in 2020 by NHS England and NHS Improvement [1] and led by Hilary Cass, a retired consultant paediatrician and the former president of the Royal College of Paediatrics and Child Health. [2]
Camera lucida in use. A camera lucida is an optical device used as a drawing aid by artists and microscopists.. The camera lucida projects an optical superimposition of the subject being viewed, onto the surface upon which the artist is drawing.
A typical application of such a lens is to refocus the correction allowing clear vision at any distance. Unlike with bifocals, near-vision correction is achieved over the entire field of view, in any direction. Switching between distance and near vision is accomplished by re-adjusting the lens, instead of by tilting and/or rotating the head.