Heavy metal content of the hair of children in industrial cities

Nuchal screening has the following advantages: Non invasive. First trimester procedure. Results are obtained quickly. 80-90% detection rate for Down's Syndrome.     

Accessory artificial circulation in complex treatment of experimental acute toxic pulmonary edema

In experiments on 50 dogs with toxic acute edema of the lung, induced with intravenous injection of 0.1% silver nitrate, the authors have studied the efficacy of accessory artificial circulation and "conservative" therapy. During the perfusion a discharge of the right portions, adequate extracorporeal gas metabolism, normalization of blood gas and acid-base balance were noted; an intensity of pulmonary edema is descreased. An intensive therapy for pulmonary edema was found to be more effective in association of "conservative" treatment with venoarterial perfusion and blood oxygenation.     

Particular Cases of the Calculation of the Errors (Uncertainties) of the Results of Direct Measurements with Multiple Observations

It is shown that an expression for the total error as defined in GOST 8.207-76 of the corrected results of a measurement possesses an anomaly when this error is less than one of its components, and that a similar anomaly occurs for the expanded uncertainty as defined in MI 2552-99. The error of uncorrected results of a measurement whose random component is distributed according to different laws is compared with calculations utilizing RD 50-453-84 and MI 1788-87.     

The vitamin status of miners working at deep levels and its correction

Providing with ascorbic acid, thiamine, riboflavin, vitamin B6 and niacin was studied in miners at deep levels before and after intake of correcting doses of vitamins. Enrichment of the food ration with vitamins produced a positive effect on the working capacity of the miners under study. The levels of vitamin consumption (vitamin-energy coefficients) have been estimated correcting the vitamin balance in miners working at deep levels.     

Variation of the Composition and Properties of Cementite in Heat Treatment of Tilling Machine Members from Chilled Cast Iron

Metal Science and Heat Treatment - Results of a study of white iron cementite in binary Fe – C and ternary Fe – C – Si compositions and in castings of unalloyed white iron with...     

Effect of Straining Conditions on Structural Characteristics of Pressed Shape Memory Alloy 45% Ti – 45% Ni – 10% Nb

Metal Science and Heat Treatment - The effect of the temperature-and-rate conditions of straining on the structural characteristics of pressed alloy 45% Ti – 45% Ni – 10% Nb is studied....     

Comparison of the requirements imposed on the energy dependence of the sensitivity of photon and neutron radiation dosimeters in different standards of radiation safety

It is shown that for a front-to-back geometry of irradiation with photons and neutrons when monitoring doses in accordance with the radiation safety standard NRB-99 or doses in critical organs using previous standards, the requirements imposed on the energy dependence of the sensitivity of dosimeters have hardly changed since 1960. However, the requirements were quite different for photons when monitoring the exposure dose using previous standards. Translated from Izmeritel’naya Tekhnika, No. 2, pp. 49–55, February, 2009.     

Special features of dendritic crystallization and elevation of the information content of phase diagrams

It is established that dendritic crystallization obeys the rule of equilibrium lever independently of the cooling rate. The deposition of the line of termination of the dendritic growth has made it possible to solve some problems of practical metal science, for example, establish the actual shift of the point of ultimate solubility and the concentration range of alloys susceptible to anomalous supersaturation of the solid solution. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 10–14, October, 2000.     

Special Features of Dendritic Crystallization and Elevation of the Information Content of Phase Diagrams

It is established that dendritic crystallization obeys the rule of equilibrium lever independently of the cooling rate. The deposition of the line of termination of the dendritic growth has made it possible to solve some problems of practical metal science, for example, establish the actual shift of the point of ultimate solubility and the concentration range of alloys susceptible to anomalous supersaturation of the solid solution.