Chemical characterisation

Beumer GJ, van Blitterswijk CA, Bakker D, and Ponec M. A new biodegradable matrix as a part of a cell seeded skin substitute for the treatment of deep skin defects A physico-chemical characterisation. Clin Mater, 1993, 14, 21-27. 

Following previous works on physico-chemical characterisation of sunflower low-methoxyl pectins (Alarc o-Silva, 1990, Leitao at al., 1995) and technological utilisation in the manufacture of low calorie gels (Alarc o-Silva et al., 1992), this investigation was carried out to test the suitability of that pectin to the confection of grape juice reduced calorie jellies in comparison with two types of commercial pectin. Aiming at the optimisation of low-calorie jelly formula, based on consumers preferences, the jellies were submitted to a sensory panel test judgement and instrumental texture-analysis. 

Toftegaard C., Moore C. and Bradley A.J. (1999). Chemical characterisation of urinary pheromones in Brown Antechinus, Antechinus stuartii. J Chem Ecol 25, 527-535. 

The availability of in situ XPS accompanying STM therefore provides both chemical characterisation of the adlayer and the concentrations of adatoms... 

Major Chemotypic Groups Novel Chemical Characterisation and Sub-groups... 

In this paper, the bulk material was obtained by impregnation of the silica host with GFP solution and nanosised by sonication, preserving the features of both the biomolecule and the mesoporous structure. An exhaustive physical chemical characterisation of the nanosized materials was performed by structural (X-Ray Diffraction, Transmission Electron Microscopy), volumetric and optical (photoluminescence spectroscopy) techniques. 

G. Khan, M. I. H. Farooqi, Chemical characterisation of resins sold in Indian markets. Part I. Luban and Kundur, hit. J. Pharmacognosy, 29, 302 305 (1991). 

Report 108 Chemical Characterisation of Polyurethanes, M. J. Forrest, Rapra Technology Ltd. 

The development of catalysts includes both practical and theoretical knowledge and experience with a palette of disciplines known to the chemical engineer, e.g. inorganic chemistry, physical and chemical characterisation techniques, nano-scale materials, unit operations, chemical reaction engineering, catalyst kinetics, and transport phenomena. 

Till now nicotine and caffeine have been monitored outdoors only to chemically characterise the particulates containing illicit substances, with the purpose of... 

Grit (AljOj) blasted mild steel Q panels, spray coated on both sides, were used for iron pick-up studies. Similar panels were used for chemical characterisation. 

Chemical Characterisation. Chemical characterisation of the underfilra darkening beneath chlorine-containing vinyl-acrylic films was sought using a variety of techniques on the substrate surface as well as the backside of stripped films. The substrates were grit blasted and plain mild steel Q panels exposed up to 98 days in hot salt spray and examined within hours of removal. 

Tockner K, Malard F, Burgherr P, Robinson CT, Uehlinger U, Zah R, Ward JV (1997) Physico-chemical characterisation of channel types in a glacial floodplain ecosystem (Val Roseg, Switzerland). Arch Hydrobiol 140 433... 

Later, the chemical characterisation of the volatiles from yellow passion fruit essence and from the juice of the fruit was done by GC-MS and GC-olfactom-etry (GC-O) [27]. Esters were the components found in the largest concentrations in passion fruit juice and essence extracted with methylene chloride. Analysis by GC-O yielded a total of 66 components which appeared to contribute to the aroma of passion fruit juice and its aqueous essence. Forty-eight compounds were identified in the pulp of Brazilian yellow passion fruits (Passiflora edulis f. flavicarpa) [48]. The predominant volatile compounds belonged to the classes of esters (59%), aldehydes (15%), ketones (11%), and alcohols (6%). 

Clark, J. R., Appleman, D. E., and Papike, J. J. (1969). Crystal chemical characterisation of clinopyroxene based on eight new structure refinements. Miner. Soc. Amer. Sp. Papers 2, 31-50. 

Chemical characterisation of aerosol particles is presently being performed and includes the analysis of the following species S042, N03, Cl, FT, NH/, Na+, K+, Ca2+ and Mg2+. 

Schmidl C, Marr IL, Ae C, Kotianova P, Berner A, Bauer H, Kasper-Giebl A, Puxbaum H (2008) Chemical characterisation of fine particle emissions from wood stove combustion of common woods growing in mid-European Alpine regions. Atmos Environ 42 126-141... 

Hueglin C, Gehrig R, Baltensperger U, Gysel M, Monn C, Vonmont H (2005) Chemical characterisation of PM2.5, PM10 and coarse particles at urban, near-city and rural sites in Switzerland. Atmos Environ 39 637-651... 

Mediterranean Basin. Additional studies of the finer particle fractions and chemical characterisation will elucidate the sources and impact of particle pollution in the area. Particularly there is a lack of data on carbonaceous aerosol that organic and elemental carbon observations could help to distinguish the contribution of secondary versus primary sources. 

Boon, J. J., 1989, An introduction to pyrolysis mass spectroscopy of lignocellulosic material case studis of barley straw, com stem and Agropyron, in Physico-chemical Characterisation of Plant Residues for Industrial and Feed Use, A. Chesson, and E. R. 0rskov, eds., Elsevier Applied Science London, pp. 25-49. 

Helle, S., Alfaro, G., Keim, U. and Tascon, J.M.D. (2000) Mineralogical and chemical characterisation of coals from southern Chile. International Journal of Coal Geology, 44(1), 85-94. 

The metal-accelerated hydrolysis of amino acid esters or amides comprises one of the best investigated types of metal-mediated reaction (Fig. 3-7). One of the reasons for this is the involvement of chelating ligands, which allows chemical characterisation of intermediates and products in favourable cases, and allows detailed mechanistic studies to be made. The reactions have obvious biological relevance and may provide good working models for the role of metals in metalloproteins. 

The protein-chemical characterisation revealed a homotetrameric enzyme with a molecular mass of 362 kDa, an isoelectric point of pi 6.16 and a blocked N-terminus in Edman degradation studies [353], In biochemical studies we investigated the effect of free and chelated first-row transition metal ions (Cu2+, Ni2+, Zn2+ and Co2+) on SuSy activity [355]. Further experiments on the binding behaviour of SuSy in immobilized metal ion affinity chromatography (I MAC) gave an insight into the topography of sucrose synthase from rice... 

Dedik, A.N., Hoffmann, P. and Ensling, J. (1992) Chemical characterisation of iron in atmospheric aerosols. Atmos. Environ., 26, 2545-2548. 

Improvement of the chemical characterisation and quantification of organic materials - As already mentioned, the NOM found in freshwaters is composed of an extremely complex mixture of compounds, most of which (80%) are not yet identified. Moreover, in the case of thoroughly studied homologous groups, such as fulvic and humic matter, scant attention has been paid to the identification of the nature of minor sites, which are probably more relevant for trace metal control than... 

Zorpas, A.A., Vlyssides, A.G. and Loizidou, M. (1998) Physical and chemical characterisation of anaerobically stabilised primary sewage sludge. Fresenius Environ. Bull., 7, 502-508. 

Chemical characterisation of F uptake in archaeological bone has already been developed in the 19th century [1,2] and is now well established [60], However, relatively few studies use a combined multianalytical approach using trace elemental and microstructure analytical techniques (PIXE/PIGE, TEM-EDX) for evidencing modifications on different microscopic and nanoscopic levels (Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), SEM, TEM) and enabling an objective evaluation of the F uptake mechanisms [32-34,51],... 

Chemical Characterisation of Vulcanisates by High-Resolution Solid State NMR... 

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