Abstract: Provided are a vehicle door including a plastic film seal and a method of assembling the same. The plastic film seal is attached to an inner panel of a vehicle door between the inner panel and a door trim to improve watertight performance and, when the door trim is removed, improve the outer appearance. The vehicle door includes an outer panel, an inner panel provided inside of the outer panel, a door trim attached to and finishing the inner panel, and a plastic film seal provided between the inner panel and the door trim.

Abstract: The present invention relates to a slow-releasing fertilizer composition and a composition for increasing plant growth and plant tolerance to salt stress which comprise, as an effective ingredient, hydroxyapatite or in mixture with a tricalcium phosphate obtained from chemical synthesis or thermal treatment of bones, coated with humic acid or a polymer of monomeric phenol.

Abstract: Disclosed is a method of producing a composition for preventing hair loss and promoting hair growth, which is capable of making the hear roots of the scalp to be smoothly contracted or relaxed, which is capable of enhancing the inherent physical properties of the hair roots and capable of stimulating the circulation of blood by discharging waste materials from the hair follicle, and which is convenient to use because the composition is not solidified. The composition of the present invention is produced by putting glutinous rice powders and corn flours into an Akebia Quinata base solution comprising an Akebia Quinata and a Selaginella, and then by mixing and heating them.

Abstract: A DC-DC converter control circuit with enhanced driving efficiency while securing circuit stability during light-load driving of the DC-DC converter through variation of an on/off duty ratio of a burst mode according to load. The control circuit includes a detection unit for detecting an amount of current and a voltage at an output stage of a DC-DC converter, and generating and outputting a differential voltage according to a level of the detected voltage, a comparison unit for comparing the differential voltage with a reference voltage having a triangle or sawtooth waveform, thereby generating a duty signal, and a converter controller for generating an on/off control signal corresponding to a duty ratio of the duty signal, and supplying the on/off control signal to the DC-DC converter, to control on/off of the DC-DC converter.

Abstract: Provided is a battery cell balancing circuit including: a battery cell module including a plurality of battery cells connected in series; a series resonant circuit including an inductor unit and a capacitor unit which are connected in series so as to store electric energy recovered from a corresponding battery cell of the battery cell module and supply the stored electric energy to a corresponding battery cell of the battery cell module; and a switch unit configured to provide an electric energy recovery path for storing the electric energy recovered from the corresponding battery cell of the battery cell module into the capacitor unit of the series resonant circuit and provide an electric energy supply path for supplying the stored electric energy to the corresponding battery cell of the battery cell module.

Abstract: Provided is a battery cell balancing circuit including: a battery cell module including a plurality of battery cells connected in series; a series resonant circuit including an inductor unit and a capacitor unit which are connected in series so as to store electric energy recovered from a corresponding battery cell of the battery cell module and supply the stored electric energy to a corresponding battery cell of the battery cell module; and a switch unit configured to provide an electric energy recovery path for storing the electric energy recovered from the corresponding battery cell of the battery cell module into the capacitor unit of the series resonant circuit and provide an electric energy supply path for supplying the stored electric energy to the corresponding battery cell of the battery cell module.

Abstract: A DC-DC converter control circuit with enhanced driving efficiency while securing circuit stability during light-load driving of the DC-DC converter through variation of an on/off duty ratio of a burst mode according to load. The control circuit includes a detection unit for detecting an amount of current and a voltage at an output stage of a DC-DC converter, and generating and outputting a differential voltage according to a level of the detected voltage, a comparison unit for comparing the differential voltage with a reference voltage having a triangle or sawtooth waveform, thereby generating a duty signal, and a converter controller for generating an on/off control signal corresponding to a duty ratio of the duty signal, and supplying the on/off control signal to the DC-DC converter, to control on/off of the DC-DC converter.