摘要:
The present invention relates to a production method for 4,4′-bis(alkylamino)diphenylamine, and more specifically relates to a method in which 4,4′-dinitrodiphenylamine (4,4′-DNDPA) is produced by reacting urea with nitrobenzene in the presence of a polar organic solvent and a base catalyst, and then the 4,4′-bis(alkylamino)diphenylamine (4,4′-BAADA) is produced by subjecting the 4,4′-DNDPA and a ketone to hydrogenation in the presence of a hydrogenation catalyst.
摘要:
A variable-speed reproducing method for DVCR comprising the steps of: (1) converting a transported signal into a transport stream (TS) signal; (2) storing the converted TS signal as normal play data; (3) detecting trick play data from the converted TS signal; (4) separately recording the trick play data and normal play data formed in the steps 2 and 3; and (5 and 6) if a trick play signal is input, reading and reproducing only the recorded trick play data at a corresponding speed, thereby facilitating trick play by DVCR.
摘要:
In a quantization number selecting apparatus and method for a DVCR which can simplify the hardware configuration of a quantizer and can efficiently assign a proper quantization number minimizing quantization errors, the apparatus includes a plurality of quantizers serially connected and having each quantization number, for receiving a video segment composed of a plurality of macro-blocks and sequentially performing quantization according to each area number and class number, a plurality of bit-rate calculators for calculating each bit rate by the respective outputs of the plurality of quantizers, a plurality of quantization error summing portions serially connected for calculating quantization errors by the outputs of the plurality of quantizers and sequentially summing the same, and a bit estimator for selecting a quantization number by which each macro-block can be compressed into an adaptive length by the respective outputs of the bit-rate calculators and quantization error summing portions. Also, the method includes the steps of (1) sequentially quantizing a plurality of macro-blocks constituting a video segment, (2) calculating and sequentially summing bit-rates and quantization errors depending on the plurality of quantized macro-blocks, and (3) searching a macro-block having the minimum quantization error based on the calculated and summed bit-rates and quantization errors and allotting a quantization number having an adaptive bit-rate.
摘要:
A particle separating apparatus and method are provided, which pass a fluid sample such as blood through a filter to remove foreign matter, and separate target particles by using a MOFF channel, and re-separate the separated target particles through dielectrophoresis. The particle separating apparatus includes a MOFF (Multi Orifice Flow Fractionation) channel including a multi orifice segment through which a fluid sample passes to discharge a primarily separated material that are target particles separated from the fluid sample, through a central passage; a dielectrophoresis channel including a pair of electrodes to which AC power is applied and forming an electric field in a flow channel connected to the central passage of the MOFF channel to re-separate the target particles from the primarily separated material discharged from the central passage of the MOFF channel through dielectrophoresis.
摘要:
A particle separating apparatus and method are provided, which pass a fluid sample such as blood through a filter to remove foreign matter, and separate target particles by using a MOFF channel, and re-separate the separated target particles through dielectrophoresis. The particle separating apparatus includes a MOFF (Multi Orifice Flow Fractionation) channel including a multi orifice segment through which a fluid sample passes to discharge a primarily separated material that are target particles separated from the fluid sample, through a central passage; a dielectrophoresis channel including a pair of electrodes to which AC power is applied and forming an electric field in a flow channel connected to the central passage of the MOFF channel to re-separate the target particles from the primarily separated material discharged from the central passage of the MOFF channel through dielectrophoresis.
摘要:
The present invention relates to a method of analyzing protein modification. The method of invention for analyzing protein distribution and characteristics on one-dimensional gel provides the way to analyze proteins of samples on one-dimensional gel quantitatively and provides information on interactions among proteins and further can be effectively used for the development of a novel diagnostic and therapeutic method for a disease by screening a disease marker protein.
摘要:
The present invention relates to a method for terminating anionic polymerization using phosphate ester/water mixture, more particularly to a novel method for terminating anionic polymerization using phosphate ester/water mixture as a polymerization terminator in a living polymer solution prepared by the anionic polymerization, so that the polymerization can be terminated effectively, without coupling or discoloration and with less production of basic materials that affect the antioxidant, thereby enabling control of acidity without necessitating a further neutralization process.
摘要:
A prefabricated post assembly is proposed. The prefabricated post assembly includes a vertical post having at least one assembly surface and a horizontal post having an assembly module mounted at an end thereof to be coupled to the assembly surface, in which at least one upper insertion hole is formed at an upper portion of the assembly surface and at least one lower insertion hole is formed at a lower portion of the assembly surface.
摘要:
The present invention relates to the unbalanced multi-block styrene-butadiene-styrene (SBS) and provides the copolymer represented by the following structure, mB1*S1−lB2−S2−sB3, wherein B is a butadiene block, S is a styrene block, l, m, s are the relative size among the blocks (i.e., large size, middle size, and small size, respectively), and * is the tapered block between mB1 block and S1 block (i.e., random copolymer of a kind). They have to satisfy the following related expressions. 0.01lB2≦mB1≦0.5lB2 and 0.01mB1≦sB3≦0.5mB1 a) 0.5S1≦S2≦1.5S1 b) 5%≦*%≦25% c) In the related expression, the value of B1 and S1 include tapered block for the sake of convenience, and * % is the random styrene content in all the styrene in SBS. The unbalanced multi-block SBS of this invention exhibits excellent processability in the preparation of hot-melt adhesives, reducing processing hours. It also exhibits good adhesive properties such as initial loop tack, 180° peel strength, and holding power, and it has a normal level of heat resistance.
摘要:
Technologies are generally described for providing an adaptive user interface. In some examples, a gesture-based apparatus may include a distance measuring unit configured to measure a distance between the gesture-based apparatus and a user, a gesture recognition unit configured to recognize a gesture of the user, and a control unit configured to compare the measured distance with a predetermined distance and configured to control the gesture recognition unit based at least in part on the comparison result.