RESUMO
PCB content in soil and vegetables grown on the polluted soils in some districts of the town of Serpukhov have been studied for 10 years after the use of PCBs had been banned at the local capacitor plant. Soil contamination with PCBs in the vicinity of the plant is still extremely high (up to 30 mg/kg). Vegetables grown on the polluted soils, especially carrots and green parts of fennel, parsley, celery are also highly contaminated. The primary pollutants are found to be tri- and tetrachlorobiphenyls (up to 70-80% of total PCBs).
Assuntos
Contaminação de Alimentos , Bifenilos Policlorados/análise , Poluentes do Solo/análise , Poluição Ambiental/efeitos adversos , Indústrias , Federação Russa , Verduras/químicaRESUMO
Elimination of cholesterol from physiological fluids was carried out by means of affinity chromatography using digitonine as an affinity agent. For this purpose a method of covalent binding of digitonine with aminosylochrome was developed. The most suitable conditions for production of the stable sorbent specific for cholesterol are described. The ratio of concentrations of digitonine to sodium periodate was 1:2; oxidation was performed in a medium containing 50% aqueous dioxane within 1.5 hrs. The modified sorbent, used for affinity chromatography of cholesterol, possessed a specific capacity of 10 mg/g.
Assuntos
Arteriosclerose/terapia , Colesterol/isolamento & purificação , Colesterol/sangue , Cromatografia de Afinidade/métodos , Digitonina , HumanosRESUMO
Cause of lethal outcomes of acute appendicitis were studied. Operations were performed in 11162 cases. Fourty eight patients (0,43%) died. In addition, 7 patients died without an operation. In 65% of dead patients diagnostic, technical and tactical errors were stated. Among their causes were the following: late admission to the hospital resulting in the appearance of complications which masked the main disease, groundless extension of indications for the operation, absence of individual operative measures and methods depending on the specific features of the pathological state.