Purification with ion exchange column chromatography and serological detection of odontoglossum ringspot virus

Thesis (master`s)--서울대학교 대학원 :농생물학과 식물병리학전공,1995.Maste

WAY-POINT BASED BIOMEDICAL AGENT DELIVERY SYSTEM FOR LESION AND METHOD FOR GENERATING DATA OF WAY-POINT ROUTE

본 발명은 영상 데이터를 생성하는 내시경, 내시경이 생성한 영상 데이터를 표시하는 영상 표시부, 사용자 조작명령을 입력받아 움직임 제어명령을 생성하는 마스터부, 및 조향 와이어를 포함하는 조향 카테터가 구비되어 구동할 수 있는 슬레이브부를 포함하는, 강내 병변부 치료물질 전달 시스템 및 강내 병변부의 치료물질 도포가 필요한 부위의 웨이-포인트 경로 데이터 생성 방법에 관한 것이다

Electromagnetically Actuated Soft Hydrogel Microrobots for Biomedical Applications

This paper introduces electromagnetically actuated biomedical microrobots using external stimulus responsive hydrogels. We briefly summarize several research trends using representative magnetic actuated hydrogel microrobots developed to date and introduce our three developed types of magnetic actuated hydrogel microrobots. First, we propose a selective microrobots control method using microclampers consisting of temperature-responsive hydrogel (NIPAAM) blocks and microheaters. Using the selective microrobots control method, multiple microrobots can be independently controlled by an electromagnetic actuation (EMA) system. Second, we developed a self-folding magnetically driven microrobot in which a layer containing magnetic nanoparticles (MNPs) and a temperature-responsive hydrogel layer are laminated. The motion of the magnetically driven microrobot is controlled precisely using magnetic field control and the microrobot performs self-(un)folding motion due to the temperature change. Additionally, the microrobot is able to grab a bead containing a drug and to manipulate it precisely to a desired position. Finally, we developed a spring-shaped hydrogel (NIPAAM) microrobot using drugs and MNPs. By using an integrated system containing an EMA system and a near-infra-red (NIR) light generating device, we demonstrated that the spring-type hydrogel microrobot can move to a desired position and actively release the loaded drug. Thus, it is shown that a variety of magnetically actuated hydrogel microrobots were developed and further in-depth studies are necessary for the development and use of these microrobots in biomedical applications. © ICROS 2019.1