Abstract:
A glucanase having increased enzyme activity and thermostability is disclosed. The glucanase comprises a modified amino acid sequence of SEQ ID NO: 2, wherein valine at position 18 is substituted with tyrosine and tryptophan at position 203 is substituted with tyrosine.
Abstract translation:公开了具有增加的酶活性和热稳定性的葡聚糖酶。 葡聚糖酶包含SEQ ID NO:2的修饰的氨基酸序列,其中18位的缬氨酸被酪氨酸取代,203位的色氨酸被酪氨酸取代。
Abstract:
A retaining ring for CMP is disclosed. The retaining ring has a plurality of grooves. The grooves have rounded sidewalls. Because the sidewalls of the grooves of the retaining ring are rounded, the slurry is not apt to accumulate around them and the pad is less scratched. Accordingly, the micro-scratches on the wafer surface are reduced and the yield of the CMP step is increased. Its operational method and application system are also disclosed in this invention.
Abstract:
A method of removing an insulating layer on a substrate is described, including a first CMP process and a second CMP process performed in sequence, wherein the polishing slurry used in the first CMP process and that used in the second CMP process have substantially the same pH value that exceeds 7.0. A cleaning step is conducted between the first and the second CMP processes to remove a specific substance which would otherwise cause undesired particles to form in the second CMP process.
Abstract:
A thermostable cellulase having increased enzyme activity is disclosed. The cellulase comprises a modified amino acid sequence of SEQ ID NO: 2, wherein the tyrosine at position 61 is substituted with an amino acid selected from the group consisting of phenylalanine, alanine and glycine.
Abstract translation:公开了具有增加的酶活性的热稳定纤维素酶。 纤维素酶包含SEQ ID NO:2的修饰的氨基酸序列,其中61位的酪氨酸被选自苯丙氨酸,丙氨酸和甘氨酸的氨基酸取代。
Abstract:
A real-time instruction device in accordance with the present invention comprises a database, a selecting module and a GUI. The database comprises at least multiple classifications and multiple Flash components corresponding to the classifications. The selecting interface allows a teacher to select a classification from the database. The GUI virtually simulates a white board that allows the teacher to dynamically drag a selected Flash component for real-time instruction with boundless space for teaching.