Now showing items 11-20 of 132
Aggregation behavior of novel hyaluronan derivatives-a fluorescence probe study
Aggregation properties of hydrophobized hyaluronan (hHA) in different molecular weights and degree of substitution were studied by pyrene and perylene fluorescence method. The critical aggregation concentration (cac) was ...
Protective Properties of a Microstructure Composed of Barrier Nanostructured Organics and SiOx Layers Deposited on a Polymer Matrix
The SiOx barrier nanocoatings have been prepared on selected polymer matrices to increase their resistance against permeation of toxic substances. The aim has been to find out whether the method of vacuum plasma deposition ...
Characterization of Electroless Ni–P Coating Prepared on a Wrought ZE10 Magnesium Alloy
Electroless low-phosphorus Ni–P coating was deposited on a wrought ZE10 magnesium alloy including an advanced pre-treatment of the material surface before deposition. Uniform Ni–P coating with an average thickness of 10 ...
Transesterification of Lactic Acid Oligomers with Ethanol, a Way to Anhydrous Ethyl Lactate: A Kinetic Study
A new method for the preparation of anhydrous ethyl ester of lactic acid was studied. The selected method is based on catalytic transesterification of lactic acid oligomers, which were prepared for this purpose by autocatalytic ...
The Effect of PLGA-PEG-PLGA Modification on the Sol-gel Transition and Degradation Properties
(Budapest University of Technology and Economics Faculty of Mechanical Engineering Department of Polymer Engineering, 2016-02-26)
This paper deals with the influence of an incubation medium pH on the hydrolytic degradation of a novel thermosensitive biodegradable triblock copolymer based on hydrophilic poly(ethylene glycol) and hydrophobic copolymer ...
Healing of Large Segmental Bone Defect after Implantation of Autogenous Cancellous Bone Graft in Comparison to Hydroxyapatite and 0.5% Collagen Scaffold Combined with Mesenchymal Stem Cells
(University of Veterinary and Pharmaceutical Sciences in Brno, 2010-04-06)
At present, attention is focused on research into possibilities of healing large bone defects by the method of mini-invasive osteosynthesis, using implantation of biomaterials and mesenchymal stem cells (MSCs). This study ...
The influence of barium sulphate and barium carbonate on the Portland cement
(Elsevier Ltd., 2016-08-03)
Shielding of different types of radiation should be studied these days when there is a great development in the field of nuclear science. Barium ions can shield different type of radiation, therefore, by incorporation of ...
The ash from fluidized bed combustion as a donor of sulfates to the Portland clinker
The paper deals with possibilities of using solid residues from fluidized bed combustion of coal, bed and filter ash in the production of composite Portland cements. The ash from fluidized bed combustion contains a high ...
Determination of Critical Parameters of Drug Substance Influencing Dissolution: A Case Study
(Hindawi Publishing Corporation, 2014-09-15)
The purpose of this study was to specify critical parameters (physicochemical characteristics) of drug substance that can affect dissolution profile/dissolution rate of the final drug product manufactured by validated ...
Detailed balance in reaction kinetics - consequence of mass conservation?
Detailed balance condition for triangular isomerisation mechanism is derived from the more general permanence of atoms, consequently, it should be viewed as a special equilibrium result of mass conservation.