graphene modified glassy carbon electrodes have been developed for the determination of calcium dobesilate in pharmaceutical formulations. the prepared graphene and cnts were used as a conductive substrate for electrochemical study of calcium dobesilate. the direct electrochemistry of calcium dobesilate showed a reversible cyclic voltammogram with a formal potential of 133 mv (vs. ag/agcl) for ...

The electrochemistry of banana tissues on a carbon paste electrode modified with multi-walled carbon nanotubes (MWCNTs) is presented. Cyclic voltammetry is applied to investigate the direct electrochemistry of banana tissues i.e. a source of polyphenol oxidase (PPO). A redox couple with an anodic and counterpart cathodic peak is obtained. The influence of various parameters such as pH,...

objective(s):the aim of this study was to improve flowability and compressibility characteristics of starch to use as a suitable excipient in direct compression tabletting. quasi-emulsion solvent diffusion was used as a crystal modification method. materials and methods: corn starch was dissolved in hydrochloric acid at 80˚c and then ethanol as a non-solvent was added with lowering temperature ...

thyroid hormones regulate the metabolisms of all cells including hepatocytes, and hence, modulate hepatic function. hyperthyroidism is one of the most common endocrine disorders characterized by increased secretion of thyroid hormones t3 and/or t4. this study investigated frequency of abnormal liver function tests in the patients with hyperthyroidism that referred to imam reza hospital of kerma...

conventional methods of pear breeding, largely based on intra- and inter-specific hybridization, are difficult because pear is highly heterozygous, polygenic and has a long juvenile period. genetic improvements of pear cultivars are possible through induction of mutations and gene transfer by genetic engineering. a general prerequisite for these approaches is to establish an efficient plant reg...

while our knowledge of anuran embryonic and larval surface ciliation and their diversity ofciliation patterns are significant, very few references were noticed on embryonic ciliation in direct-developinganurans, such as species in the genus eleutherodactylus. eleutherodactylus urichi embryos were found tohave surface ciliated cells during much of their development until a few days before hatchi...

In this pilot study we evaluated electroencephalographic (EEG) mean frequency changes induced by prefrontal transcranial direct current stimulation (tDCS) and investigated whether they depended on tDCS electrode montage. Eight healthy volunteers underwent tDCS for 15 min during EEG recording. They completed six tDCS sessions, 1 wk apart, testing left and right direct current (DC) dipole directi...

CONTEXT Modern medical practice involves cost analysis of therapeutic and diagnostic procedures. There are no papers dealing with this theme in relation to forensic autopsies in our country. OBJECTIVE Analysis of direct costs of forensic autopsies. TYPE OF STUDY Cost analysis. SETTING São Paulo Medical Examiner's Central Office. SAMPLE Year 2001 activity. PROCEDURES Routine forensic a...