Characterisation of minerals

Oxide Minerals in Comet Wild 2: Tem and Synchrotron Characterisation

Introduction: We have used a variety of techniques – TEM, synchrotron – as part of the UK Stardust consortium in order to identify and constrain the origin of oxides and thus demonstrate some affinities between Wild 2 and other planetary materials such as chondrite groups or IDPs. We are finding that oxidised phases in Wild 2 have a variety of origins. Studying Fe-bearing oxide phases in the St...

Structural Characterisation of a Polysaccharide from Radix Ranunculus ternati

A water soluble polysaccharide, HB-1, with a molecular weight of 23,930, was isolated from radix Ranunculi ternati. by hot water extraction, ethanol precipitation, deproteination，ultrafiltration and gel-filtration column chromatography. Its sugar composition was determined by GLC as Glc, Ara, and Gal in a molar ration of 16.071: 2.722: 1. And the absolute configuration of Glc was identified as ...

Preparation and Characterisation of ZnO - SiO2 and Bi2O3 – CuO Nanocomposites

In the present work, ZnO - SiO2 and Bi2O3– CuO nanocomposites have been prepared by sol gel with alternate precursors existing in literature. They are characterised by XRD, SEM,UV, FTIR and photoluminescence  spectra .The XRD results indicate a crystallite size of  approximately 80 nm for both nanocomposites. SEM image shows a heterogeneous particle size for bot...

The minerals of milk.

The salt of milk constitutes a small part of milk (8-9 g.L(-1)); this fraction contains calcium, magnesium, sodium and potassium for the main cations and inorganic phosphate, citrate and chloride for the main anions. In milk, these ions are more or less associated between themselves and with proteins. Depending on the type of ion, they are diffusible (cases of sodium, potassium and chloride) or...

Isolation and Characterisation of Anti-diabetic Pharmacological Activities of Phytoestrogens