Process of filtration in which a medium (semipermeable) which allows small molecules to pass through is called ultrafiltration. Some times this can be conducted under pressure. This process naturally occurs in kidneys. Usually membrane having a pore size of 0.001 - 0.1 µm size are used.
The open access journals are peer reviewed scholarly journals. The open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.
Last date updated on September, 2014