Abstract: An object of the present invention is to provide a material for organic EL elements, the material being excellent in hole injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability. Another object of the present invention is to provide an organic EL element having high efficiency, a low driving voltage, and a long lifespan, by combining the aforementioned material with various materials for organic EL elements, the materials being excellent in hole/electron injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability, such that the properties of the individual materials can be effectively exhibited.

Abstract: An ultrasound diagnosis apparatus according to an embodiment of the present disclosure may include a variable voltage supply unit configured to supply a driving voltage to the transmission circuit, a transmission circuit configured to generate a pulse signal for generating an ultrasonic signal using the driving voltage, and a controller configured to store compensation information for compensating for a voltage drop of the driving voltage and to provide a voltage control signal including information on a driving voltage for which the voltage drop is compensated for based on the compensation information to the variable voltage supply unit, wherein the variable voltage supply unit supplies the compensated driving voltage to the transmission circuit in response to the voltage control signal.

Abstract: The present invention relates to a large-scale photosynthetic bioreactor in which transparent photobioreactors including a baffle are connected in parallel or in series by an adhesive element so that the reactor volume can be easily scaled up for scale-up culture of photosynthetic organisms, and to a fabrication method thereof. The large-scale photosynthetic bioreactor according to the present invention makes it possible to culture a larger amount of microalgae than a conventional photobioreactor in the same area. In addition, it has high light transmittance, produces a large amount of biomass per unit area due to smooth mixing, and has a significant effect of reducing carbon dioxide. Furthermore, the present invention has an advantage in that the number of photosynthetic bioreactors required to culture the same scale of photosynthetic organisms is significantly smaller than that in a conventional process for culture of photosynthetic organisms, and thus the operating costs can be reduced.

Abstract: A method for carbon resource utilization is disclosed. According to one embodiment, the method includes (a) supplying carbon dioxide to a medium to form bicarbonate ions (HCO3?) (S100), (b) inoculating one or more microalgal species into the medium, followed by photo-culture (S200), and (c) supplying calcium ions (Ca2+) to the medium, where the microalgal species are photo-cultured, to produce calcite (CaCO3)-containing biomass (S300).

Abstract: A method for carbon resource utilization is disclosed. According to one embodiment, the method includes (a) supplying carbon dioxide to a medium to form bicarbonate ions (HCO3?) (S100), (b) inoculating one or more microalgal species into the medium, followed by photo-culture (S200), and (c) supplying calcium ions (Ca2+) to the medium, where the microalgal species are photo-cultured, to produce calcite (CaCO3)-containing biomass (S300).

Abstract: The present invention relates to a large-scale photosynthetic bioreactor in which transparent photobioreactors including a baffle are connected in parallel or in series by an adhesive element so that the reactor volume can be easily scaled up for scale-up culture of photosynthetic organisms, and to a fabrication method thereof. The large-scale photosynthetic bioreactor according to the present invention makes it possible to culture a larger amount of microalgae than a conventional photobioreactor in the same area. In addition, it has high light transmittance, produces a large amount of biomass per unit area due to smooth mixing, and has a significant effect of reducing carbon dioxide. Furthermore, the present invention has an advantage in that the number of photosynthetic bioreactors required to culture the same scale of photosynthetic organisms is significantly smaller than that in a conventional process for culture of photosynthetic organisms, and thus the operating costs can be reduced.