The effectiveness of a multi-spark electric discharge system in the destruction of microorganisms in domestic and industrial wastewaters.

The aim of this work was to investigate the effectiveness of a high voltage multi-spark electric discharge, with pulse energy of 1 Joule, in killing microorganisms in wastewater. Wastewater from primary treated effluent arising from domestic and industrial sources was abstracted for continuous pulsed discharge disinfection. The wastewater contained a large mixed population of microorganisms (approximately 10(7) CFU ml(-1) [10(9) CFU 100 ml(-1)] total aerobic heterotrophic bacteria) including vegetative cells and spores.

Pulsed high voltage electric discharge disinfection of microbially contaminated liquids.

Aims: To examine the use of a novel multielectrode slipping surface discharge (SSD) treatment system, capable of pulsed plasma discharge directly in water, in killing micro-organisms.

Methods And Results: Potable water containing Escherichia coli and somatic coliphages was treated with pulsed electric discharges generated by the SSD. The SSD system was highly efficient in the microbial disinfection of water with a low energy utilization (eta approximately 10-4 kW h l-1).

[Essential phospholipids in combined therapy of chronic circulatory insufficiency].

Essential phospholipids (essentiale-forte) was used in combined therapy of 36 patients with pronounced circulatory insufficiency and hepatic dysfunction. A 4-6-week course of this treatment 6 weeks after its termination resulted in good subjective response, positive changes in hemodynamics, intrahepatic cholestasis, synthetic function of the liver and lipid metabolism. The drug was well tolerated.

[Dynamics of immunologic indicators in stomach ulcer].

Time course of cellular and humoral immunity parameters in the course of ulcer defect healing was followed up in 47 patients with gastric ulcers. Immune status changes in these patient population were found dependent on the stage of ulcer defect healing, being the most manifest at the beginning of ulcer cicatrization and showing signs of immune system activation. A possible relationship between changes in the immunity status and reparative processes at the site of ulcer defect is discussed.

[Polymer-modified silica sorbents for molecular sieve chromatography of biopolymers].

N-vinylpyrrolidone-N(2-hydroxy) acrylamide copolymer-modified porous glass was studied as a support for gel permeation chromatography. Influenza, Sendai, fowl plague viruses and rota-viruses were purified by chromatography on the support. As compared with Sepharose 4B the support shows better hydrodynamic properties and yields higher amounts of purified viruses.

[Device for forming the shaped brehmsstrahlung fields of the B5M25 betatron].

The betatron B5M25 bremsstrahlung is formed only by a rectangularly shaped diaphragm, which results in excessive irradiation of healthy tissues surrounding the pathological focus. An appliance in the form of an additional diaphragm with inserted shaped units (blocks) fastened to the proper betatron diaphragm and permitting formation of a dose field in conformity with the pathological focus outlines has been constructed. The design of the appliance helps avoid "contamination" of the bremsstrahlung beam with electrons and second generation Compton quanta.