The history of chitosan dates back to the 19th century, when Rouget [1] discussed the deacetylated forms of the parent chitin natural polymer in 1859. During the past 20 years, a substantial amount of work has been reported on chitosan and its potential use in various bioapplications. Chitosan...
Dash M,Chiellini F,Ottenbrite R M, et al.Chitosan-A versatile semi-synthetic polymer inbiomedical applications. Progress in Polymer Science . 2011Dash, M., Chiellini, F., Ottenbrite, R. M., & Chiellini, E. (2011). Chitosan--A versatile semi-synthetic polymer in biomedical applications. ...
However, crosslinking does change the chemical structure of the polymer and, for example when used in soft tissue augmentation, cells in the connective tissue which are influenced in their development, migration and proliferation by the milieu in which they are found are exposed to a hyaluronic ...
The appropriate selection of the side chains can also add to the versatility of the polymers by introducing reactive functionality on the polymer. For example, the use of monomers containing N-oxysuccinimidyl esters can be used to prepare photopolymers capable of reacting with the amine groups of...
Our system demonstrates the integration of synthetic biology, protein engineering, and material science to achieve living functional material synthesis. In particular, it represents the first example to use living cells to create active materials, of which the function also requires programmed behavior of...
Due to the reduction in conformational entropy of a polymer in confinement, the geometry of the nanochannel has been found to strongly affect the dynamics of the translocation process. For example, in DNA sequencing using biological nanopores like \(\alpha\)-hemolysin and MspA, it has been ...
A heterogeneous membrane of a thermoplastic crystalline polymer composed of a microporous layer and a nonporous layer and having excellent properties, for example as a diaphragm for separating a gaseous mixture; and a process for product... A Takanori,O Yoshiyuki - US 被引量: 116发表: 1990年 ...
There is a large arsenal of synthetic and natural compounds possessing anti-malarial activity. These compounds belong to different chemical classes and have different mechanisms of action. It is already known that some anticancer drugs have strong anti-malarial effect. For example, antimetabolite methot...
aAmerican, for example, has prohibited its attendants from saving most data about fliers, such as what they ordered for breakfast, because of "a gut reaction" that it would violate fliers' privacy, Ms. Leibman says. 美国人,例如,禁止了它的乘务员保存多数数据关于飞行物,例如什么他们指令早餐,...
example, for a mechanical activation such as a compressive force it may be desirable, and preferably, to employ substances which are commonly referred to as "shear-thinning" (pseudoplastic) substances. Examples of such substances include polymer solutions, many gels and pastes such as dentrifice ...