to facilitate controlled drug release need to be considered during manufacture of the nanoparticles. Ideal conditions, or wish-list, of any drug are difficult to meet simultaneously. As for nanocarriers to serve as good candidates for drug delivery across the BBB can be summarized as follows.
- particle diameter less than 100 nanometers;
- non-toxic, biodegradable and biocompatible;
1. Listening Comprehension
1~3) Listen to the following and answer the question.
Pre-history
Prior to the release of bitcoin there were a number of digital cash technologies starting with the issuer based e-cash protocols of David Chaum and Stefan Brands. Adam Back developed hashcash, a proof- of-work scheme for spam control. The first proposals for distributed digital scarcity based cryp
유전질환이란,
비정상적인 유전자나 염색체에 의해 일어나는 질병으로서, 특히 선천적으로 나타나는 질환의 경우가 많다. 대부분의 유전질환은 드물게 일어나 수천 혹은 수백만의 사람들 중 오직 한 사람에서만 나타난다. 유전질환은 유전이 될 수도 있고 그렇지 않을 수도 있다. 유전 질환 주에는
Arthur Miller was born on Oct. 17, 1915, in New York City.
His father ran a small coat-manufacturing business; during the Depression it failed.
In 1932, after graduating from high school, Miller went to work in an auto-parts warehouse.
In 1944, the Broadway production of his The Man Who Had All the Luck opened and closed almost simultaneously, though it won a Theater Guild Awa