Using a developed laser light-scattering (LLS) procedure, we accomplished the characterization of an unfractionated polyimide (UPI) in CHCl3 at 25°C. The Laplace inversion of precisely measured intensity–intensity time correlation function from dynamic LLS leads us first to an estimate of the characteristic line-width distribution G(G), and then to the translational diffusion coefficient distri...

The distribution of tissue polypeptide antigen (40 kD molecular weight) in normal adult and fetal liver, and in liver disease was investigated and compared with the distribution of low and high molecular weight cytokeratins. In normal liver tissue polypeptide antigen was found only in bile duct epithelium; this distribution is similar to that of high molecular weight cytokeratin, but differs fr...

Tanacetum zahlbruckneriis reported as a new record from northwestern Iran. A complete description, diagnostic characters and a distribution map of T. zahlbruckneriare presented. The phylogenetic position of T. zahlbruckneri in a concise molecular framework based on the sequences of ITS nrDNA data are presented. A taxonomic conclusion about the previously reported samples of this enigmatic speci...

ansa-Indenylamidodimethyltitanium complex ([t-BuNSiMe2Ind]TiMe2: 1) was synthesized by one-pot reactions starting from the ligand, MeLi and TiCl4. The structure of 1 was determined by X-ray crystallography and the results obtained revealed that the indenyl ligand coordinate to titanium in an η-tendency. Propylene polymerization was conducted with 1 in toluene or heptane as solvent at 0 ̊C in th...

The approach to equilibrium in a buoyant-density gradient is a transport process in a centrifugal field and may be used to measure a sedimentation coefficient. This process is interesting for several reasons. Densitygradient sedimentation equilibrium can be used for the determination of the molecular weight of high-molecular weight DNA samples homogeneous in buoyant density. Furthermore, buoyan...

low molecular weight heparin-modified isoliquiritigenin-loaded solid lipid nanoparticle (lmwh-isl-sln) was developed for injective application. the morphological observation, particle diameter and zeta potential of lmwh-isl-sln were characterized using transmission electron microscopy (tem) and a malvern zetasizer. its entrapment efficiency (ee) and drug loading (dl) were determined by ultracen...

background: low molecular weight heparin (lmwh) is used for the treatment and prevention of coagulative disorders. few patients receiving therapeutic doses of lmwh develop major hemorrhage. currently there are few reports in the literature on acute overdose on adults.  in this study, clinical profile, treatment and outcome of 21 patients who acutely overdosed enoxaparin are described. methods: ...

Huniic substances (fulvic and humic acids) are the decomposition products of plant material and constitute a major part of the earth's organic carbon [ 11. Their presence in aquatic ecosystems is important because of their binding capacity for protons. metal ions (geocycling) and organic micropollutants such as pesticides and herbicides [2]. The characterisation of humic substances in ternis of...