Abstract: The present disclosure relates to a novel polymer compound and a method for preparing the same. More particularly, the present disclosure relates to a novel conductive low band gap electron donor polymer compound having high photon absorptivity and improved hole mobility, a method for preparing the same and an organic photovoltaic cell containing the same. Since the conductive polymer compound as a low band gap electron donor exhibits high photon absorptivity and superior hole mobility, it can be usefully used as a material for an organic optoelectronic device such as an organic photodiode (OPD), an organic thin-film transistor (OTFT), an organic light-emitting diode (OLED), an organic photovoltaic cell, etc. as well as in the development of a n-type material.

Abstract: There is provided a hybrid turf support for use with natural grass to form a stable hybrid turf system, the hybrid turf support comprising a knitted reticulated support; and a plurality of grass-like fibers extending upwardly from the knitted reticulated support, the grass-like fibers comprising groups of fibers extending upwardly at intervals.

Abstract: A cooking apparatus includes: a main body; a cooking table; an induction coil configured to emit a magnetic field needed for induction heating of a cooking container; and a temperature measurement unit disposed in an electronic component chamber formed in the main body so as to measure a temperature of the cooking container. The temperature measurement unit includes: a case having an opening formed at a top surface thereof; a temperature sensor disposed in the case so as to measure a temperature of the cooking container; and a cooling duct, one side of which is coupled to the case and the other side of which includes an air inlet therein. The temperature measurement unit is configured to adjust an internal temperature of the case when air introduced from the air inlet moves to the case through the cooling duct.

Abstract: An oil detection device for a compressor to detect at least two levels of oil in the compressor includes a first detection unit including a first reference electrode and a first detection electrode disposed at both sides of the first reference electrode, and a second detection unit including a second reference electrode spaced from the first reference electrode and a second detection electrode disposed at both sides of the second reference electrode.

Abstract: An apparatus for detecting an oil level and a method for controlling the same, an apparatus for detecting oil flow and a method for controlling the same, and a method for controlling oil return using the detected oil level and the detected oil flow are disclosed. The level of oil stored in a compressor is measured at two or more positions. The frequency comparison scheme using two electrodes can correctly detect the level of oil stored in the compressor, a refrigerant state, and the level of mixed oils, and can determine an internal state of the compressor and a normal or abnormal state of the oil return system, such that the oil return control can be actively controlled. The flow of oil in the oil return pipe is detected so as to determine whether the oil is normally supplied in real time, such that a malfunction of the compressor is prevented and a valve state can be checked.

Abstract: The present disclosure relates to a novel polymer compound and a method for preparing the same. More particularly, the present disclosure relates to a novel conductive low band gap electron donor polymer compound having high photon absorptivity and improved hole mobility, a method for preparing the same and an organic photovoltaic cell containing the same. Since the conductive polymer compound as a low band gap electron donor exhibits high photon absorptivity and superior hole mobility, it can be usefully used as a material for an organic optoelectronic device such as an organic photodiode (OPD), an organic thin-film transistor (OTFT), an organic light-emitting diode (OLED), an organic photovoltaic cell, etc. as well as in the development of a n-type material.

Abstract: A storage container with a sensor device to detect a state of food contained in the storage container and a refrigerator having the same. The sensor device is separably mounted to the storage container. The sensor device includes an electrode terminal usable not only to achieve a charging operation, but also to achieve a salinity measuring operation. Thus, the sensor device has user convenience while having a compact size.

Abstract: An oil detection device for a compressor to detect at least two levels of oil in the compressor includes a first detection unit including a first reference electrode and a first detection electrode disposed at both sides of the first reference electrode, and a second detection unit including a second reference electrode spaced from the first reference electrode and a second detection electrode disposed at both sides of the second reference electrode.

Abstract: A salinity measuring apparatus to determine salinity of food includes a salinity sensing unit including a pair of measuring electrodes and a capacitor, a switching unit to switch a voltage of the capacitor of the salinity sensing unit, and a control unit to provide a pulse signal with a constant frequency to the switching unit and to determine the salinity of the food which is in contact with the measuring electrodes of the salinity sensing unit based on when the voltage of the capacitor reaches a reference voltage. By providing the pulse signal with the constant frequency to the switching unit, it is possible to minimize the internal impedance variation of the capacitor and to more accurately measure the salinity of the food. Since a period when the voltage of the capacitor is substantially “0” is present, it is possible to minimize accumulation of ions in the measuring electrodes.

Abstract: A washing machine in which the structure of a laundry weight sensing apparatus to sense the weight of laundry within a tub is enhanced. The washing machine includes a cabinet, a tub, a support member provided with one end combined with the tub and the other end combined with the cabinet so as to support the tub to the cabinet, and a laundry weight sensing apparatus provided with one side combined with the support member to use load of the tub transmitted to the support member so as to sense the weight of laundry within the tub and the other side contacting one surface of the cabinet to prevent impact transmitted from the tub. The washing machine may precisely measure the weight of laundry without influence of surrounding environments and prevent an error generated due to transmission of vibration caused by operation of the tub.

Abstract: A removable support surface has knitted loops of yarn, and has piles extending from the knitted yarn to form an artificial turf, or to form a hybrid turf when combined with natural grass which grows between the knitted yarn. The piles may be hollow to retain liquid, and the dimensions of the yarn and the piles may be adjusted during fabrication. The removable support surface is fabricated by warp knitting, and the piles may be bent to have a crimped configuration. When used in a bunker with sand, the crimped configuration prevents sand from migrating. The removable support surface may also be placed on a seeded mat, on a dirt layer, or on existing natural grass. The removable support surface may be composed of biodegradable material.

Abstract: Disclose is a triphenylamine derivative with a low band gap. The triphenylamine derivative is represented by Formula (I): wherein R1 and Ar are as defined in the specification. Further disclosed is a high efficiency organic photovoltaic cell using the derivative.

Abstract: Disclose is a triphenylamine derivative with a low band gap. The triphenylamine derivative is represented by Formula (I): wherein R1 and Ar are as defined in the specification. Further disclosed is a highefficiency organic photovoltaic cell using the derivative.

Abstract: A washing machine that senses whether a door is opened or closed, vibration of a washing tub or weight of the washing tub. The washing machine includes an optical sensor mounted at a predetermined position in the washing machine and a controller to analyze an output value of the optical sensor to determine whether a door is opened or closed, vibration of a washing tub or weight of the washing tub. Whether the door is opened or closed, vibration of the washing tub or weight of the washing tub may be determined using a single infrared sensor in a noncontact manner.

Abstract: A refrigerator, the temperature of the inside of which is uniformly controlled, and a control method thereof. The direction of an air flow in a storage chamber is periodically changed so as to uniformly distribute cool air in the storage chamber by interchanging roles of suction and discharge holes in various manners under various conditions, thereby preventing local supercooling and thus uniformly maintaining the internal temperature of the storage chamber.

Abstract: The present invention relates to an artificial turf which comprises a base cloth made of synthetic fiber, and synthetic fiber pile yams that are protruded up and extended from the base cloth. The base cloth has a form that braids made of synthetic fiber are woven in a reticular structure. The bottom end portions of the synthetic fiber pile yarns are knitted together with the base cloth and are fixed by the base cloth, and the top end portions of the synthetic fiber pile yams are protruded up and extended from the base cloth. The artificial turf according to the present invention has a plurality of void portions naturally formed in the base cloth having a reticular structure to make growth of natural grass possible.

Abstract: A storage container with a sensor device to detect a state of food contained in the storage container and a refrigerator having the same. The sensor device is separably mounted to the storage container. The sensor device includes an electrode terminal usable not only to achieve a charging operation, but also to achieve a salinity measuring operation. Thus, the sensor device has user convenience while having a compact size.

Abstract: A salinity measuring apparatus to determine salinity of food includes a salinity sensing unit including a pair of measuring electrodes and a capacitor, a switching unit to switch a voltage of the capacitor of the salinity sensing unit, and a control unit to provide a pulse signal with a constant frequency to the switching unit and to determine the salinity of the food which is in contact with the measuring electrodes of the salinity sensing unit based on when the voltage of the capacitor reaches a reference voltage. By providing the pulse signal with the constant frequency to the switching unit, it is possible to minimize the internal impedance variation of the capacitor and to more accurately measure the salinity of the food. Since a period when the voltage of the capacitor is substantially “0” is present, it is possible to minimize accumulation of ions in the measuring electrodes.

Abstract: A system and method for detecting airborne agents. The system includes a semiconductor ultraviolet optical source configured to emit an ultraviolet light, a controller configured to generate a pseudo-random code for emission of the ultraviolet light modulated at the pseudo-random code, a telescope configured to focus the ultraviolet light to a distance from the source and to receive elastically backscattered signals and fluorescence signals from the distance, and a sensor configured to detect the elastically backscattered and fluorescence signals. The method generates a pseudo-random code and emits at least one wavelength of ultraviolet light modulated at the pseudo-random code, transmits the modulated ultraviolet light pulses to a distance from the source, receives elastically backscattered signals and fluorescence signals from the distance, and detects the elastically backscattered and fluorescence signals.

Abstract: A method and apparatus for measuring target gas concentrations in an atmosphere. The method and apparatus emit in the atmosphere a laser beam tuned to a molecular absorption line of a target gas, receive a reflected signal affected by gas absorption of the target gas in the atmosphere, divide and direct the received signal into a first optical path and a second optical path including in one of the paths a correlation gas cell filled with a predetermined concentration of the target gas, detect transmitted signals through the first optical path and the second optical path, and calculate a target gas concentration by comparing a first signal transmitted through the first optical path to a second signal transmitted through the second optical path.