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Polyethylenimine-graft-poly(ethylene glycol) copolymers: influence of copolymer block structure on DNA complexation and biological activities as gene delivery system.
- H. Petersen, P. M. Fechner, +6 authors T. Kissel
- Medicine, Chemistry
- Bioconjugate chemistry
- 22 June 2002
For two series of polyethylenimine-graft-poly(ethylene glycol) (PEI-g-PEG) block copolymers, the influence of copolymer structure on DNA complexation was investigated and physicochemical properties… Expand
A profile of the operations of Chinese multinationals in Africa
The presence of Chinese multinational corporations on the global stage is changing the landscape of international business and politics. Western firms, which once had virtually undisputed command… Expand
Combinatorial Development of Biomaterials for Clonal Growth of Human Pluripotent Stem Cells
Both human embryonic stem (hES) cells and induced pluripotent stem (hiPS) cells can self-renew indefinitely in culture, however current methods to clonally grow them are inefficient and… Expand
Surface plasmon resonance analysis of dynamic biological interactions with biomaterials.
- R. Green, R. Frazier, K. Shakesheff, M. Davies, C. J. Roberts, S. Tendler
- Chemistry, Medicine
- 1 September 2000
Surface plasmon resonance (SPR) is an optical technique that is widely gaining recognition as a valuable tool to investigate biological interactions. SPR offers real time in situ analysis of dynamic… Expand
China's Developmental Model Comes to Africa
- M. Davies
- Political Science
- 1 March 2008
Has anybody heard of Africa’s new special economic zones? China is going about carving out designated special economic zones (SEZ) across the continent that are set to become Africa’s new economic… Expand
Comparison of calibration methods for atomic-force microscopy cantilevers
Th es cientific community needs a rapid and reliable way of accurately determining the stiffness of atomic-force microscopy cantilevers. We have compared the experimentally determined values of… Expand
Surface Modification of Poly(lactide-co-glycolide) Nanospheres by Biodegradable Poly(lactide)-Poly(ethylene glycol) Copolymers
- S. Stolnik, S. E. Dunn, +8 authors L. Illum
- Chemistry, Medicine
- Pharmaceutical Research
- 1 December 1994
The modification of surface properties of biodegradable poly(lactide-co-glycolide) (PLGA) and model polystyrene nanospheres by poly(lactide)-poly(ethlene glycol) (PLA:PEG) copolymers has been… Expand
Preparation of sub-100 nm human serum albumin nanospheres using a pH-coacervation method.
Human serum albumin (HSA) nanospheres of about 100 nm diameter were prepared using a pH-coacervation method whereby acetone was added to an HSA solution (pH 9.0). The particles obtained were… Expand
Atomic force microscopy of gastric mucin and chitosan mucoadhesive systems.
Atomic force microscopy has been utilized to probe, at a molecular level, the interaction between purified pig gastric mucin (PGM) and a mucoadhesive cationic polymer, chitosan (sea cure 210+), with… Expand
London's urban heat island: Impact on current and future energy consumption in office buildings
This paper presents the results of a computational study on the energy consumption and related CO2 emissions for heating and cooling of an office building within the Urban Heat Island of London,… Expand