摘要:
The present invention provides a process for preparing an acid addition salt of a synthetic intermediate for carbapenem antibiotics and a novel acid addition salt of a synthetic intermediate for carbapenem antibiotics obtained from the process. The present invention also provides a process for preparing a carbapenem antibiotic using the acid addition salt. According to the process of the present invention, an acid addition salt of a synthetic intermediate for carbapenem antibiotics can be prepared in a high yield and high purity, without conducting column chromatography. Thus, the process of the present invention can be applied to mass production with an industrial scale. Furthermore, since the acid addition salts have solid forms, they are easy to handle and keep in a manufacturing site.
摘要:
An organic light emitting display device, and a driving method for the same. The organic light emitting display device, including: a pixel unit configured to display an image corresponding to a data signal, a scan signal, a first power, and a second power; a data driver configured to receive an image signal to output the data signal; a scan driver configured to output the scan signal; a power supply unit configured to receive an input power from an external source to generate the first power and the second power; and a controller configured to output a voltage control signal to control a voltage of the first power and a voltage of the second power and output a first gamma value and a second gamma value in accordance with a voltage of the input power, the first and second gamma values being for controlling a voltage of the data signal.
摘要:
A semiconductor memory device includes a mode register, an additional function executer, and an additional function controller. The mode register activates an additional function control signal when a mode register set code indicates that an additional function is to be executed concurrently with a refresh operation. The additional function controller controls the additional function executer to carry out the additional function concurrently with the refresh operation when the additional function control signal is activated.
摘要:
A circuit and process capable of smoothly switching between screens of an organic light emitting display by switching an image of a pixel unit that includes a matrix of pixels into a black image by sequentially reducing the voltage of a first power supply at least two times to display the black image as the screen of the pixel unit transitions to the black image.
摘要:
The present invention provides novel microorganisms, Brevibacterium lactofermentum CJJA21 (Accession No. KCCM-10222), which is resistant to sodium azide, and Brevibacterium lactofermentum CJJA22 (Accession No. KCCM-10223), which is resistant to α-aminobutyric acid. These microorganisms are capable of producing L-glutamine in a higher yield than the known strains. The present invention further provides processes for producing L-glutamine using the microorganisms of the invention.
摘要:
A wafer bake system includes a heating plate for heating a wafer, and means for supporting the wafer to be spaced from the heating plate, wherein a gap distribution between the wafer and the heating plate is measured, and a temperature gradient of the wafer is controlled based on the measured gap distribution.
摘要:
An organic light emitting display device, and a driving method for the same. The organic light emitting display device, including: a pixel unit configured to display an image corresponding to a data signal, a scan signal, a first power, and a second power; a data driver configured to receive an image signal to output the data signal; a scan driver configured to output the scan signal; a power supply unit configured to receive an input power from an external source to generate the first power and the second power; and a controller configured to output a voltage control signal to control a voltage of the first power and a voltage of the second power and output a first gamma value and a second gamma value in accordance with a voltage of the input power, the first and second gamma values being for controlling a voltage of the data signal.
摘要:
There is provided a cell culture device, which includes a plurality of cell culture units, in which the cell culture unit includes: a cell culture tub that defines a culture space for cultivating cells, contains culture medium in the culture unit, and has an air layer above the culture medium; a drainage channel that is connected to the cell culture tub to discharge used culture medium to the integral drainage channel; an open culture medium reservoir that supplies new culture medium into the cell culture tub; and a droplet generator that is disposed between the cell culture tub and the open culture medium reservoir and supplies the culture medium from the open culture medium reservoir to the cell culture tub, using negative pressure of the air layer generated when the used culture medium is discharged.
摘要:
An apparatus and method for canceling a Direct Current (DC) offset in a Broadband Wireless Access (BWA) communication system are provided. The method includes canceling a DC offset by performing self-calibration in a modulator/demodulator (modem), attempting initial synchronization acquisition in the modem, and if the initial synchronization acquisition succeeds, canceling a DC offset by performing DC offset trace and cancellation.
摘要:
The present invention provides a 2-arylmethylazetidine-carbapenem-3-carboxylic acid ester derivative or its pharmaceutically acceptable salt, a process for the preparation thereof, and a pharmaceutical composition comprising the same. The 2-arylmethylazetidine-carbapenem-3-carboxylic acid ester derivatives or their pharmaceutically acceptable salts show high oral absorption rate, and thus can be orally administered. The active metabolites thereof have a broad spectrum of antibacterial activities against Gram-positive and Gram-negative bacteria and excellent antibacterial activities against methicillin-resistant Staphylococcus aurus (MRSA) and quinolone-resistant strains (QRS). In particular, the acid addition salts of the 2-arylmethylazetidine-carbapenem-3-carboxylic acid ester derivatives are obtained in crystalline forms having excellent stability.