Abstract: The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.

Abstract: Provided is a method for stably synthesizing an error-free gene using a high-depth oligonucleotide tiling, which includes designing an oligonucleotide fragment by an over-overlapping method, synthesizing the oligonucleotide fragment using DNA microarray, retrieving error-free oligonucleotide fragments retrieved by next generation sequencing, and assembling the error-free oligonucleotide fragments.

Abstract: Provided is a method for stably synthesizing an error-free gene using a high-depth oligonucleotide tiling, which includes designing an oligonucleotide fragment by an over-overlapping method, synthesizing the oligonucleotide fragment using DNA microarray, retrieving error-free oligonucleotide fragments retrieved by next generation sequencing, and assembling the error-free oligonucleotide fragments.

Abstract: An atomic layer deposition apparatus including a substrate loading unit provided in a process chamber, the substrate loading unit including at least one substrate loading plate on which a substrate is to be loaded, an injector assembly coupled to the process chamber and configured to supply a plurality of reactants to deposit a multilayer film onto the substrate while sweeping over the substrate loaded on the substrate loading plate, a plurality of first heat sources configured to heat in a non-contact manner, and, a plurality of second heat sources configured to heat in a contact manner, the first and second heat sources at different positions in the process chamber may be provided.