the chemistry of explosives
The chemistry of nanostructured materials
... structures. The metal cation in the center of the porphyrin ring is also coordinated to pyridyl groups of other tpp complexes, allowing the creation of an extended layer structure without the use of ... Figure 4, the first step in the formation of mesoporous Nb 2 O 5 , which takes place in the absence of water is the formation of a Nb-N covalent bond between the precursor Nb(OEt) 5 and the long-chain ... condensation of these species in the presence of water leading to the formation of cylindrical micelles, and ultimately to a mesophase (route a’, b’ in Figure 4). Alternatively, the formation of the...
Ngày tải lên: 23/04/2013, 20:25
THE CHEMISTRY OF MILK pptx
... temperature, the iodine value is largely a measure of the oleic-acid content and thereby of the softness of the fat. The iodine value of butterfat normally varies between 24 and 46. The variations ... those of κ-casein are readily soluble. Due to the dominating localisation of κ-casein to the surface of the micelles, the solubility of calcium κ-caseinate prevails over the insolubility of the other ... formed. The protein is then precipi- tated from the solution. The pH at which this happens is called the isoelec- tric point of the protein. In the presence of an excess of hydrogen ions the molecules...
Ngày tải lên: 08/03/2014, 23:20
Chemical Ecology: The Chemistry of Biotic Interaction docx
Ngày tải lên: 29/03/2014, 17:20
THE CHEMISTRY OF DRUG DELIVERY SYSTEMS (hoá học các hệ dẫn truyền thuốc)
... in the membrane Similarity of structure to phospholipid membranes in living cells Avoid the hydrolytic degradation of drugs in water Reduce the RES uptake due to the rapid clearance of ... concentrations of 30-50 mol% almost non-polar increase hydrophobic interactions in the phospholipid bilayers drecrease the fluidity of the membrane OBJECTIVES On the completion of this ... the answers to the questions. Students will receive a publication on drug delivery system at least one week before the day of the exam. The exam questions will be based on the given article....
Ngày tải lên: 18/04/2014, 15:37
new developments in the chemistry of war gasses 1950
... out on the preparation of these compounds led to the discovery of many interesting substances and to the development of several new methods of synthe- sis. In addition, the results of the toxicological ... branching of the chain at the carbon atom adjacent to the oxygen appears to confer higher toxicity than branching at the end of the chain. (b) Replacement of the fluorine atom by another substituent, ... comparable to that of hydrogen cyanide. The toxicity of some of these fluophosphates is higher than that of phosgene. Their vapors have a pronounced effect on the eyes. Although there is no tear...
Ngày tải lên: 09/05/2014, 17:01
the chemistry of nanomaterials. synthesis, properties and applications, 2004, p.761
Ngày tải lên: 04/06/2014, 14:19
Project Gutenberg''''s The Chemistry of Hat Manufacturing, by Watson Smith pptx
Ngày tải lên: 28/06/2014, 19:20
Gián án Chapter 22 Chemistry of the Nonmetals
... some of the lattice sites • SiO 2 becomes AlO 2 − • the negative charge is countered by the inclusion of a cation Albite = ¼ of Si replaced by Al; Na(AlO 2 )(SiO 2 ) 3 Anorthite = ½ of Si ... form of carbon that is a component of soot used as rubber strengthener 7 Silicates • the most abundant elements of the Earth’s crust are O and Si • silicates are covalent atomic solids of ... coal in the absence of air forms coke carbon and ash • heating wood in the absence of air forms charcoal activated carbon is charcoal used to adsorb other molecules • soot is composed of hydrocarbons...
Ngày tải lên: 28/11/2013, 01:12