Sogang University Research Foundation

Samsung Electronics Co., Ltd.

Nam Hwi Hur

Byeong No Lee

Byeongno Lee

Kyu Hyung Lee

Byung-Chul Kim

Kyu-sang Lee

Tae-Jin Ahn

Kyung-hee Park

Dae-Soon Son

Jhin-gook Kim

The present disclosure relates to a method for preparing metal nanoparticles, and particularly, to a method for preparing metal nanoparticles, the method including reacting a hydrazine-carbon dioxide binded compound with a metal oxide or a metal ion compound.

Method for preparing metal nanoparticles

Disclosed is a method of capturing carbon dioxide using a hydrazine derivative.

Capturing method of carbon dioxide using hydrazine derivative

The present invention relates to a method for preparing reduced graphene oxide from graphene oxide using a solid hydrazine derivative.

Method for manufacturing reduced graphene oxide using solid hydrazine derivative

The present invention relates to the synthesis of a novel compound, in which liquid hydrazine and the derivatives thereof react with excess carbon dioxide to enable the carbon dioxide to chemically bond to the hydrazine and the derivatives thereof. To this end, high-pressure carbon dioxide is used to synthesize hydrazine and the derivatives thereof to which the carbon dioxide is bonded in a pure form with no water and no by-product. Furthermore, the present invention provides a method for utilizing the above-described compounds by reacting the compounds with carbonyl compounds.

Reaction product of hydrazine derivatives and carbon dioxide

The present application relates to a preparation method for solid powder of a carbamic acid derivative, which includes reacting an amine derivative with carbon dioxide at a temperature in a range of from about &#x2212;30&#xb0; C. to about 500&#xb0; C. and at a pressure in a range of from about 0.3 MPa to about 100 MPa. In addition, the present disclosure relates to a reduction method for solid powder of a carbamic acid derivative to an amine derivative and carbon dioxide, which includes dissolving solid powder of the carbamic acid derivative prepared in a solvent; refluxing the carbamic acid derivative at a temperature in a range of from about 30&#xb0; C. to about 100&#xb0; C.; and evaporating the solvent.

Preparation method for an imine compound and reduction method for solid powder of a carbamic acid derivative

Preparation method for solid powder of a carbamic acid derivative

The present disclosure relates to a method of preparing powder of a solid carbazic acid derivative, which involves inducing a reaction of a liquid hydrazine derivative with carbon dioxide at a high pressure of from about 0.5 MPa to about 100 MPa. During the reaction, the pressure may range from about 0.5 MPa to about 100 MPa. In this regard, although the reaction of the carbon dioxide with the liquid hydrazine derivative occurs when the pressure is adjusted to below than about 0.5 MPa, sticky precipitates in a form of gel are gradually produced but the powder is not produced.

Method of preparing powder of a solid carbazic acid derivative

Provided is a method of predicting risk of lung cancer recurrence in a lung cancer patient or after a patient has lung cancer treatment, the method including: obtaining a biological sample from a lung cancer patient; measuring an expression level of at least one marker gene from the biological sample, the marker gene being selected from the group consisting of marker genes of Table 1, 2 or 3, to obtain data for the expression level of the marker gene; and determining whether the expression level of the marker gene corresponds to an expression level of a recurrence group or an expression level of a non-recurrence group.

Growing community of inventors

Seoul, South Korea

Nam Hwi Hur