Abstract: There is an infectious full-length clone of Zika virus or a variant thereof, and a use thereof. A full-length clone of Zika virus or a derivative thereof containing a T7 bacteriophage promoter can be used to analyze the replication mechanism, life cycle, and pathogenicity of Zika virus. The clone can be used for screening a drug for preventing or treating Zika virus infections and for evaluating the efficacy of diagnostic techniques. Genetic materials, proteins, or fragments of Zika virus restored from the clone or a derivative thereof can be used as vaccines for preventing Zika virus infections.

Abstract: A composite video apparatus that is configured to store a system program in a Hard Disc Drive (HDD) instead of a ROM. The composite video apparatus includes a Digital Video Disc (DVD) drive for recording audio and video (AV) data to a DVD or reading the AV data recorded in the DVD, an HDD for storing a system program and recording the AV data independently of the DVD drive, and a microprocessor for controlling the DVD drive and the HDD.

Abstract: N-substituted mono or bis-oxazolidines may be manufactured by reacting an alkylene oxide at alkoxylating conditions with a mono-imine of the general formula: ##STR1## or a bis-imine of the general formula: ##STR2## wherein R is a linear or branched alkyl, aryl, aralkyl, alkylenyl or aryllenyl group having 1-22 carbon atoms, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different, and are selected from the group including H--, methyl, ethyl, isobutyl, isoamyl, or phenyl. The oxazolidine may thereafter be cleaved with water, preferably slightly acidified, to produce the monoethoxylated amine.