Abstract:
본 발명은 신규한 피리미딘화합물, 이의 제조방법 및 이를 유효성분으로 함유하는 암 및 염증질환의 예방 또는 치료용 약학적 조성물에 관한 것으로, 본 발명에 따른 신규한 피리미딘화합물은 암성장을 억제하는 것으로 알려진 TGF-β의 신호체계를 방해하는 DRAK의 활성을 현저히 억제하여, 이를 암의 예방 또는 치료용 약학적 조성물로 사용할 수 있는 효과가 있으며 염증질환의 예방 또는 치료용 약학적 조성물로 사용할 수 있는 효과가 있다.
Abstract:
A method for preparing mesoporous titania particles having improved heat stability in a simple manner as compared with a conventional method is provided to obtain titania particles having small holes and large holes at the same time. A method for preparing mesoporous titania particles comprises the steps of: fabricating a mesoporous silica template using a colloidal silica sol into which an organic acid and spherical silica particles having a particle size of 5 to 50 nm are dispersed; adding the mesoporous silica into a mixed solution of a titania precursor and ethanol, subjecting the titania precursor to a sol-gel reaction, calcining the reactant to prepare an anatase type titania-silica composite; and cleaning the anatase type titania-silica composite with an aqueous sodium hydroxide solution to remove silica from the anatase type titania-silica composite.
Abstract:
A method of preparing an inorganic composite membrane with high permeability in an easier manner as compared with conventional methods by using a rapid cooling-rapid drying process is provided. A method of preparing an inorganic composite membrane comprises: coating a planar or tubular porous inorganic support selected from porous metal, metal oxides and nonmetal oxides with a colloidal solution into which particles are dispersed; and rapidly cooling the coated support at a cooling rate ranging from 100 to 1000 deg.C/min in a temperature range of -250 to 0 deg.C for 0.01 to 10 minutes, rapidly drying the rapidly cooled support at a temperature rising rate ranging from 100 to 1200 deg.C/min in a temperature range of 100 to 500 deg.C for 0.01 to 10 minutes, and firing the rapidly cooled and dried support at a temperature of 300 to 1000 deg.C. The coating, rapid cooling and rapid drying processes are repeatedly performed 1 to 50 times. The particles dispersed into the colloidal solution are particles of metal, metal oxides, nonmetal oxides, or mixtures thereof.
Abstract:
A method for preparing platinum-supported on titania-silica is provided to improve the thermal stability of the platinum-supported on titania-silica, by forming a silica-platinum precursor and making the silica-platinum precursor reacting with a titania precursor under an acid condition. A mesoporous silica-platinum precursor is formed by mixing a platinum precursor having a hydrogen-bonding group and a colloid silica sol in which silica spherical particles are dispersed. A platinum-supported on titania-silica is prepared by making the silica-platinum precursor with a titania precursor and hardening the reacting result under an acid condition. The platinum precursor has a hydrogen-bonding functional group selected from a halogen atom, a hydroxyl group, and a nitrate group. Further, a size of the silica particle is 5 - 50 nm, and the titania precursor is titanium alkoxide.