Fitzpatrick, Sheila. El equipo de Stalin. Los años más peligrosos de la Rusia soviética, De Lenin a Jrushov; Ed. Crítica; Barcelona; 2016

A una centuria de la Revolución Rusa, Fitzpatick propone un nuevo abordaje para analizar y comprender una de sus etapas más relevantes: el estalinismo. La autora, profesora de las Universidades de Sídney (Australia) y Chicago (Estados Unidos), es una especialista en el tema y una de las voces autorizadas dentro de la historiografía basada en los estudios de la historia soviética, siendo La revolución Rusa una de sus obras de mayor relevancia.Universidad Nacional de Rosari

Storage and Retrieval System for Ground Water Quality Data in South Dakota

The three general objectives of this study are as follows: (1) to devise a storage and retrieval system for rapid and efficient retrieval of water quality data such as may be available in the State of South Dakota, (2) to develop a system which would enable the scientist of the Water Resources Institute of South Dakota State University and other agencies interested in water quality management to communicate more effectively with the public. This would aid in obtaining better water quality management practices and thus allow the best use of water, and (3) to develop flexibility in the data system so as to meet varying program needs and conditions. Specific Objectives of the SODAK System: 1. To develop procedures to store ground water quality data so that the origin of the data and the point of collection can be ascertained. 2. To develop procedures to record and store water quality and related parameters. 3. To devise methods of retrieving the data in any one of several forms so as to best meet the needs of the public in general and the users in particular. 4. To develop a system for the uniform conversion of data so that a researcher can find particular information which is of interest to him or convince himself of the absence of such data. 5. To develop a program that consists of collecting data in whatever form it is available and convert it to a stored record which can then be searched by an electronic digital computer. The study was initiated in the spring of 1966, and its development as a system was completed in the fall of 1967. The study and its development was made on the South Dakota State University Campus. The ground water quality data used in this study was furnished by the U.S. Geological Survey

Bioactivity of Azadirachta Excelsa Jack. Extractives on Selected Insects

Azadirachta excelsa Jack. is a fast growing timber species that has been newly chosen as a potential forest plantation species to overcome timber deficit for domestic consumption in future. This species like Azadirachta indica is suspected to contain biologically active compounds that is detrimental on insects. Many studies have been done on the A. indica, a relative species to A. excelsa, however, studies on A. excelsa are still in preliminary stages. Therefore, the aim of this study was to evaluate the effect of A.excelsa crude extractives towards three selected insect pests, (i.e. Spodoptera Iitura, Callosobruchus chinensis and Coptotermes curvignathus). A preliminary test to evaluate the susceptibility of A. excelsa wood towards termites, compared to Koompasia malaccensis, Hevea brasiliensis and Pinus caribaea was also conducted. In the first part of the study, the A.excelsa plant extracts were extracted from different plant parts (i.e. leaf, bark, trunk, twigs and branch) using a range of polar to non-polar solvents, namely hexane, petroleum ether, toluene, ethyl acetate and methanol. The plant extractives were sampled and analysed through Thin Layer Chromatography (TLC) and Infrared Spectrocopy (IR). In the second part of the study, bioassay tests were conducted on the selected insects. The insects were exposed to the plant extractives prepared at three concentration levels (i.e. 250 ppm, 500 ppm and 1000 ppm) and the solvents (0 ppm) as the control, by feeding the insects with treated food source. The S. litura larvae were fed with castor leaf discs soaked in the respective extractives. The C. chinensis adults were exposed to mungbean seeds that had been soaked in the plant extrctives while the C. curvignathus were fed with treated filter paper. In the last part of this study, the A. excelsa wood together with the other three wood species mentioned earlier, were exposed to the termites both in the laboratory and field

A dynamical point of view of Quantum Information: Wigner measures

We analyze a known version of the discrete Wigner function and some connections with Quantum Iterated Funcion Systems. This paper is a follow up of "A dynamical point of view of Quantum Information: entropy and pressure" by the same authors