This invention relates to magnetic nanosized particles having a glass surface. This invention also relates to methods for making them, as well as to suspensions thereof and their uses for the purification of DNA or RNA in particular in automated processes.

The present invention relates to a doped vanadium dioxide powder, a dispersion, and preparation methods and applications therefor. The chemical composition of the doped vanadium dioxide powder is V1-xMxO2, 0<x%¤0.5, wherein M is a doping element and said doping element is used to control the size and morphology of the doped vanadium dioxide powder. The vanadium dioxide powder of the present invention has evenly sized particles and exhibits excellent dispersibility. The preparation methods for the present invention are easy to implement, low in cost, provide high yield, and are suitable for large scale production.

In dispersing a fine carbon fiber (CNT) in a thermosetting resin, the invention disperses and disentangles the fine carbon fiber being aggregates form in the thermosetting resin solution, maintains the stable dispersed state, lowers the viscosity of the thermosetting resin solution in which the fine carbon fiber is dispersed, and provides a thermosetting resin formed article containing the fine carbon fiber by curing the fine carbon fiber dispersion solution and a production method thereof. The thermosetting resin-containing solution in which a fine carbon fiber is dispersed, comprises (A) a thermosetting resin, (B) the fine carbon fiber and (C) a viscosity-decreasing agent for fine carbon fiber having a chemical structure represented by the following general formula (1), [Chemical 1] wherein R 1 to R 7 are hydrogen atoms or the like, R 5 and R 6 may be bonded together to form a ring, and all of them have not more than 30 carbon atoms, and wherein the average total carbon number (4x + 2y + 2z) in the compound is 400 to 6000, and x, y and z satisfy 0.6 %¦ (x + z)/(x + y + z) %¦ 0.9 and, further, satisfy 0.6 %¦ y/ (y + z) %¦ 0.9.