elsevier.com is the web resource for the publishing house Elsevier, specializing in scientific, technical and medical information. Find all products, support and contacts, and information about the company.
China's largest and most used Internet service portal owned by Tencent, Inc founded in November, 1998. Presently, Tencent is aiming its operations at the strategic goal of providing users with a "one-stop online life service". Tencent's Internet platforms