Human gamma-interferon expression in the mammary gland of transgenic mice

Transgenic mice carrying a hybrid gene consisting of ovine beta-lactoglobulin gene sequences and human gamma-interferon (hIFN-g) cDNA were produced. hIFN-g expression in the mammary gland of two lactating transgenic founder females was found. The concentration of active hIFN-g in the milk was estimated as being ca. 1800 IU/ml. The hIFN-g ability to express in the mammary gland was found in the progeny of transgenic founder male.     

Applications of an Infrared Imager for Determining Temperature Fields in Gas Flows

A device containing a temperature converter with an infrared camera is described. Its application allows one to instantly measure the temperature field of a gas flow in regions of arbitrary sizes.     

Optimizing the parameters of a traveling charge gun system

On the basis of analysis of the kinetic properties of tetranitromethanebenzene (TNM-B) we confirm the fundamental possibility of utilizing the phenomenon of explosive initiation under hydrostatic compression to increase the launch velocity of bodies that are equipped with an integral [traveling] propellant charge.TsNIIKhM, 115487 Moscow. Translated from Fizika Goreniya i Vzryva, Vol. 30, No. 2, pp. 117–119, March–April, 1994.     

Prospects for the Recovery of Finely Dispersed Gold Particles in the North

Theoretical Foundations of Chemical Engineering - The prospects for extracting finely dispersed gold and other useful components from the magnetic tailings of gold recovery plants and other sources...     

Simulation of aluminothermic smelting of Al-Zr and Al-Zr-Mo-Sn alloys

Aluminothermic smelting of Al-Zr and Al-Zr-Mo-Sn alloys has been simulated in terms of thermodynamics. The thermodynamic properties of molybdenum and zirconium intermetallic compounds are calculated. It is demonstrated that, with consideration for their formation, the calculated compositions of aluminothermic blends and the forecasted extraction of target metals into an alloy are in good agreement with the data obtained during pilot tests.     

Long-distance fiber-optic quantum key distribution using superconducting detectors

This paper presents the results of experimental studies on quantum key distribution in optical fiber using superconducting detectors. Key generation was obtained on an experimental setup based on a self-compensation optical circuit with an optical fiber length of 101.1 km. It was first shown that photon polarization encoding can be used for quantum key distribution in optical fiber over a distance in excess of 300 km.     

The use of high performance liquid chromatography to authenticate water-ethanol extracts

High performance liquid chromatography (HPLC) is used to study and identify the organic substances that result from the sorption-desorption processes occurring on the surface and in the near-surface layers of oak timber in contact with water-ethanol extracts (WEEs). The work is supplemented by a study of the antioxidant activities of WEEs, which was carried out using an amperometric detector. It is found that the antioxidant activity and the content of vanillin and syringaldehyde are usually higher for natural aged WEEs.     

Ultrasonic Testing for Defects in Complex Shaped Metal Products

Russian Journal of Nondestructive Testing - Automation is a topical issue in the development of methods and equipment for ultrasonic nondestructive testing. The conditions of modern industrial...