摘要:
An example energy dissipation device for controlling a fuel cell fluid includes a conduit extending in longitudinal direction between a first opening and a second opening. A flow control insert is configured to be received within the conduit. The flow control insert is configured to cause a fuel cell fluid to flow helically relative to the longitudinal direction.
摘要:
Compositions that can include a carrier, targeting agent, and therapeutic agent are disclosed herein. The therapeutic agent may have a therapeutic activity such as inhibiting fibrosis within a target organ or tissue or inhibiting the growth of a cancer cell.
摘要:
Compositions for siRNA delivery are described which include water soluble degradable crosslinked cationic polymers having a water soluble polyethylene glycol component, a cationic polyethyleneimine component and a degradable unit component. The composition may be used to deliver siRNA to cells, particularly cancer cells. The composition may be applied to a solid surface such as a multiwell plate so that the delivery of siRNA may be carried out on the solid surface.
摘要:
Various biodegradable polyglutamate polymer conjugates that can include recurring units of the general formulae (I) and (II) are described herein. Such polymer conjugates are useful for variety of drug, targeting, stabilizing and/or imaging agent delivery applications.
摘要:
Various biodegradable polyglutamate polymer conjugates that can include recurring units of the general formulae (I) and (II) are described herein. Such polymer conjugates are useful for variety of drug, targeting, stabilizing and/or imaging agent delivery applications.
摘要:
Disclosed herein are transmembrane transporter compounds containing guanidinium groups. Also disclosed herein are methods for transporting a biologically active moiety across a biological membrane using the transmembrane transporter compounds. Particularly, this invention provides a method for the delivery of a biologically active moiety across the biological membranes of such membranes as endothelial tissues.
摘要:
A polymer comprising a recurring unit of the formula (I) as defined herein is described. In the formula (I), X is selected from the group consisting of -(CH2CH2O)m-CH2CH2- and -CH2CH2CH2O-(CH2CH2O)m-CH2CH2CH2-, wherein m is an integer in the range of 1 to 100; Y is selected from the group consisting of -C*HCH2-, -C*HCH2CH2-, -C*H-NHC(=O)-CH2CH2-, -C*H-NHC(=O)-CH2CH2CH2-, -CH2CH2N*CH2CH2-, -CH2CH2CH2N* CH2CH2CH2-, C2 to C20 alkyl, and C6 to C20 aryl, wherein C* and N* represent atoms to which Z is bonded; and Z is selected from the group consisting of -NHR1, -NH-C(=O)-(CH2)nC(=O)NR1R2, -NH-C(=O)-(CH2)nC(=O)OR1, -(CH2)nC(=O)NR1R2, -(CH2)nC(=O)OR1, -(CH2)nC(=O)SR1, and -(CH2)nNR1R2, wherein n is an integer in the range of 1 to 3, wherein R1 and R2 are each independently selected from the group consisting of hydrogen, C1 to C20 alkyl, C6 to C20 aryl, anticancer drugs, peptides, antibody fragment, lactose, galactose, mannose, transferrin, magnetic resonance imaging agents, succinimyl, and alkali metal.
摘要:
A polymer comprising a recurring unit of the formula (I) as defined herein is described. In the formula (I), X is selected from the group consisting of -(CH2CH2O)m-CH2CH2- and -CH2CH2CH2O-(CH2CH2O)m-CH2CH2CH2-, wherein m is an integer in the range of 1 to 100; Y is selected from the group consisting of -C*HCH2-, -C*HCH2CH2-, -C*H-NHC(=O)-CH2CH2-, -C*H-NHC(=O)-CH2CH2CH2-, -CH2CH2N*CH2CH2-, -CH2CH2CH2N* CH2CH2CH2-, C2 to C20 alkyl, and C6 to C20 aryl, wherein C* and N* represent atoms to which Z is bonded; and Z is selected from the group consisting of -NHR1, -NH-C(=O)-(CH2)nC(=O)NR1R2, -NH-C(=O)-(CH2)nC(=O)OR1, -(CH2)nC(=O)NR1R2, -(CH2)nC(=O)OR1, -(CH2)nC(=O)SR1, and -(CH2)nNR1R2, wherein n is an integer in the range of 1 to 3, wherein R1 and R2 are each independently selected from the group consisting of hydrogen, C1 to C20 alkyl, C6 to C20 aryl, anticancer drugs, peptides, antibody fragment, lactose, galactose, mannose, transferrin, magnetic resonance imaging agents, succinimyl, and alkali metal.
摘要:
Condensation polymerization methods are used to prepare various biodegradable polyacetals of the general formula (I). Such polymers are useful for variety of drug, biomolecule and imaging agent delivery applications.