Abstract:
본 발명은 pH 제어에 의한 화학적으로 표지된 올리고 핵산의 간편하고 효율적인 분리정제법에 관한 것으로, 보다 상세하게는 반응용액의 pH 조절에 따른 화학적 표지자의 분배상수 변화를 이용하여 표지화된 핵산을 효율적으로 분리 정제하는 방법 및 키트에 관한 것이다.
Abstract:
PURPOSE: A compound is provided to ensure excellent heat resistance and phosphoric acid resistance and to obtain a fuel cell with an improved lifetime property and cell performance when applied to the electrode and the electrolyte film for the fuel cell. CONSTITUTION: A compound is a polymerization product of a composition that contains a diisocyanate-based compound represented by chemical formula 1 below and an aromatic polyol represented by chemical formula 2, wherein A1 and A2 are each independently a substituted or unsubstituted C1-C30 alkylene group, a substituted or unsubstituted C2-C30 alkenylene group, a substituted or unsubstituted C2-C30 alkynylene group, a substituted or unsubstituted C6-C30 arylene group, a substituted or unsubstituted C2-C30 heteroarylene group, a substituted or unsubstituted C4-C30 carbon cyclic group, or a substituted or unsubstituted C6-C30 condensed polycyclic group; m is 0 or 1; R1 is a hydrogen atom or -P(-O)RR'; R and R' are each independently a hydrogen atom, a C1-C30 alkyl group, or a C6-C30 aryl group; and L is represented by chemical formula 1A.
Abstract:
PURPOSE: A hyperbranched polymer with excellent heat resistance is provided to manufacture a fuel cell with improved lifetime property and cell properties. CONSTITUTION: A hyperbranched polymer is the product obtained through condensation polymerization of a composition for forming the hyperbranched polymer consisting of a diisocyanate-based compound represented by chemical formula 1 and a dihydroxy amine-based compound represented by chemical formula 2. In chemical formula 1, A is a substituted or unsubstituted C1-C30 alkylene group, substituted or unsubstituted C2-C30 alkenylene group, substituted or unsubstituted C2-C30 alkynylene group, substituted or unsubstituted C6-C30 arylene group, substituted or unsubstituted C2-C30 heteroarylene group, substituted or unsubstituted C4-C30 carbon ring group, or substituted or unsubstituted C6-C30 condensed polycyclic group.
Abstract:
컨텐츠 제공자로부터 단말 사용자로 컨텐츠를 전달하기 위해, 패킷 라우팅을 위한 엔티티를 하나 이상 포함하는 네트워크를 이용하며, 이때, 엔티티는 컨텐츠를 저장하도록 한다. 따라서, 네트워크가 단말 사용자로부터 컨텐츠 요청을 수신하면, 요청된 컨텐츠를 저장하는 엔티티가 존재하는지 여부, 즉, 네트워크 내에 컨텐츠가 존재하는지 여부를 결정하고, 이에 따라, 컨텐츠를 단말 사용자로 전달한다.
Abstract:
PURPOSE: A content transfer method and a system thereof using network storage are provided to enable an ISP(Internet Service Provider) to transfer content. CONSTITUTION: An entity includes storages(261, 263). The storages store content. A tracker receives a content request from a terminal user. The tracker directly transfers the content request to a content supplier in case a load which is applied to the content supplier is less than predetermined value by the content request.