scholarly journals Central Italy magnetotelluric investigation. Structures and relations to seismic events: analysis of initial data

1996 ◽  
Vol 39 (1) ◽  
Author(s):  
A. Meloni ◽  
P. Palangio ◽  
M. Marchetti ◽  
E. Teisseyre ◽  
J. Marianiuk ◽  
...  
Keyword(s):  
Scientific Collaboration ◽  
Temporal Evolution ◽  
Central Italy ◽  
Magnetic Observatory ◽  
Characteristic Parameters ◽  
Released Energy ◽  
The Individual ◽  
Long Term Measurement ◽  
Selection Of

A scientific collaboration between the Warsaw Academy of Science, (Poland) and the National Institute of Geophysics (Italy), gave rise to the installation of few stations for the long term measurement of magnetotelluric fields in central Italy. The selection of investigation sites was determined by the individual seismic interest of each location. The project began in the summer of 1991, with the installation of 2 magnetotelluric stations in the province of Isernia, (Collemeluccio and Montedimezzo). In 1992, 2 more stations became operative, one in the province of Rieti, (Fassinoro), the other in the province of L'Aquila, (S. Vittoria). For the purpose of this project, the magnetic observatory in L'Aquila was also equipped with electric lines, for the measurement of the telluric field. The aim of the analysis here presented, is to show that is possible to follow the temporal evolution of magnetotelluric characteristic parameters. At Collemeluccio this evolution was compared with the seismic released energy for events recorded within the study area.

scholarly journals Magnetic variation analysis for the June 1993 seismic events in Central Italy

1997 ◽  
Vol 40 (2) ◽  
Author(s):  
T. Ernst ◽  
R. Teisseyre ◽  
A. Meloni ◽  
P. Palangio ◽  
M. Marchetti
Keyword(s):  
Scientific Collaboration ◽  
Central Italy ◽  
Magnetic Observatory ◽  
Time Interval ◽  
Magnetic Variation ◽  
The Individual ◽  
First Time ◽  
The Magnetic Field ◽  
Long Term Measurement

A scientific collaboration between the Istituto Nazionale di Geofisica (Italy) and the Warsaw Academy of Science (Poland) gave rise to the installation of a few stations for the long-term measurement of magnetotelluric fields in Central Italy. The investigation sites were determined following the individual seismic interest of each location. For this project, the magnetic observatory in L'Aquila was also equipped with electric lines, for simultaneous measurements of the telluric field. After a few years of experience some of the installed stations had to be removed for their high noise level that made this study almost impossible. A first time interval was considered from January 1992 to February 1993 and showed the existence of significant changes in magnetotelluric parameters related to earthquake occurrence time, an extension of that analysis was made to include the event of June 1993 using the magnetic field time variation.

A 28-years-long monitoring study suggests heavy decline and habitat shifts in three populations of a Mediterranean tortoise species

2020 ◽  
Vol 71 (1) ◽  
pp. 21-35
Author(s):  
Lorenzo Rugiero ◽  
Massimo Capula ◽  
Daniele Dendi ◽  
Fabio Petrozzi ◽  
Massimiliano Di Vittorio ◽  
...  
Keyword(s):  
Habitat Use ◽  
Linear Models ◽  
Central Italy ◽  
Habitat Type ◽  
Thermal Ecology ◽  
Ecological Studies ◽  
Monitoring Study ◽  
Testudo Hermanni ◽  
Selection Of

Abstract Long-term ecological studies are important for understanding wild populations’ dynamics and processes and the actual factors that can determine their decline. Here, we report the results of a 28-years-long (1992–2019) monitoring of three distinct populations of a tortoise, Testudo hermanni, in Central Italy, with an emphasis on their population abundance trends and on the eventual variation in their habitat use across years and among the study areas. Samplings were conducted by Visual Encounter Survey (VES) methodology, and using a suite of statistical analyses including correlations and Generalized Linear Models analyses. Our data showed a statistically significant decline in tortoise sightings through time, and concurrently also a variation in habitat use by tortoises. In all the three study areas, we observed a significant increase of tortoise sighting frequency in the habitat type characterized by high (>taller than 200 cm) shrubby and wooded vegetation. Since our analyses revealed no significant change in the habitat type availability by year in each study area, we suggest that T. hermanni was increasingly selecting closed vegetation spots throughout the years. We hypothesize that this observed trend of shift in habitat selection could be due to lowering their body temperatures to prevent overheating. So, the selection of more covered spots would be a thermal ecology adaptive consequence of the ongoing global warming.

A Few Aspects on Lubricant Selection for Stepless Chain Coverters: Efficiency and Service Life

1992 ◽  
Author(s):  
G. Schönnenbeck
Keyword(s):  
Friction Coefficient ◽  
Service Life ◽  
Standardized Test ◽  
Test Methods ◽  
Long Term Stability ◽  
Friction Disk ◽  
The Individual ◽  
And Control ◽  
Selection Of

Abstract Stepless vehicle drives will assume their place next to automatic switching units throughout the world if they meet their expected fuel-saving potential. This necessitates optimizing the individual components of the CVT as regards their efficiency. The main source of losses are the hydraulic supply units and the losses which result specifically from non-positive transmission. In the case of stepless chain conveners, these result mainly from friction disk deformation. These losses account for 50 to 70 % of total CVT losses. Both loss components are influenced by the lubricant to a significantly greater extent than it would appear at first sight: In the case of fully-hydraulic clamping and control systems, the viscosity and its long-term stability determines the degree of leakage losses and therefore the size of the pump or pump combinations. This applies to pressure levels between 20 and 40 bar. This in turn is directly proportional to the hydraulic losses on the CVT. The friction coefficient of the lubricant determines the level of the necessary clamping forces. These are responsible for friction-disk deformation. Also of importance as far as the selection of lubricant is concerned is its influence on the CVT service life. The critical service life limits for chain converters are chain breakage (not the subject of this report) and evidence of wear, i.e. grey staining, sheave-grooving, pitting, scoring and rocker pin wear. Standardized test methods exist at P.I.V. for both wear manifestations and for the friction coefficient, these tests allowing a targeted selection of lubricants.

scholarly journals Seed productivity of different tomato varieties under the conditions of the Novosibirsk region

2019 ◽  
pp. 44-49
Author(s):  
Tatiana V. Steinert ◽  
Zinaida P. Sinitsina ◽  
Anatoliy V. Aliluev ◽  
Lyudmila M. Avdeenko ◽  
Nadezhda S. Teplova ◽  
...  
Keyword(s):  
Vegetable Crops ◽  
Tomato Seed ◽  
Tomato Production ◽  
Production Methods ◽  
High Productivity ◽  
Time Optimal ◽  
The One ◽  
The Individual ◽  
Selection Of

Relevance Among vegetable crops, tomato is one of the leading places. In Siberia, tomato production is currently concentrated mainly in small farms and the individual sector. The problem of expanding the assortment of this culture in connection with constantly increasing market requirements remains always relevant. Material and methods The purpose of the work is the development of tomato seed production methods of varieties of selection of SibNIIRS. The studies were carried out in 2014-2018 at the experimental vegetable section of SibNIIRS - a branch of the ICG SB RAS. Results The results of many years of work on the study of seed and marketable productivity of zoned varieties and prospective tomato samples from the Urals andSiberia are presented. It has been established that in the conditions of a short growing season, high productivity is shown by varieties from early and mid-season groups. The highest sowing qualities are formed when sowing in time, optimal for the zone – the third decade of April. Early seeding shifts the phenological phases towards their rapid passage, but this creates unfavorable conditions for setting – stress during transplants, unfavorable weather. During late sowing, seeds are formed with low sowing qualities due to insufficient heat supply, especially for varieties from late ripeness groups. Germination energy and germination are higher in seeds obtained from fruits taken in the phase of full biological ripeness in all varieties. With long-term ripening (eat fruit in the phase of technical ripeness) there is a high risk of seed germination inside the fruit on the one hand and lack of nutrients, which invariably affects sowing qualities.

scholarly journals Management strategies on territories with special status of protection in the Czech Republic

2012 ◽  
Vol 50 (No. 11) ◽  
pp. 510-513 ◽  
Author(s):  
J. Simon
Keyword(s):  
Czech Republic ◽  
Management Strategies ◽  
Forest Policy ◽  
Anthropogenic Pressure ◽  
The Czech Republic ◽  
Forest Condition ◽  
The Individual ◽  
Term Management ◽  
Selection Of

About 15% of the area of the Czech Republic is classified as territories with special status of protection, most of which is covered with forests. At present, at the time of integration of the country into the European structures, an increase in the area of such territories by approximately 20% is expected. The territories show significant variation of protection objectives, management restrictions, profound differentiation in natural conditions, structure of ownership and different levels of damage, especially that caused by anthropogenic pressure. This situation requires the formulation of long-term management strategies. The problem can be solved in the following successive steps: formulation of variants and alternatives of management strategies based on a retrospective analysis of forest development; prognosis of the forest condition development after application of the individual management strategies on the basis of growth and development simulations; addition of technological and economical bases; selection of optimal variants and alternatives from the viewpoint of the fulfilment of the owner’s management goals, in accordance with the principles of forest policy and from the viewpoint of the fulfilment of the protection objective formulated for a specific territory with special status of protection. A set of methods for following the above-mentioned steps is specified in the presented contribution.

Starters and Bacteriophages in Lactic Acid Casein Manufacture

1975 ◽  
Vol 38 (5) ◽  
pp. 275-278 ◽  
Author(s):  
T. D. THOMAS ◽  
R. J. LOWRIE
Keyword(s):  
Lactic Acid ◽  
New Zealand ◽  
Acid Production ◽  
Continuous Selection ◽  
Streptococcus Cremoris ◽  
Selection For ◽  
The Individual ◽  
First Time ◽  
Selection Of

A controlled starter system was used for the first time in commercial lactic acid casein manufacture in New Zealand. Multiple starters of up to four components were constructed from 18 recently derived Streptococcus cremoris isolates which were not lysed by any of the phages in the collection of the New Zealand Dairy Research Institute. During the first season of casein manufacture, phages attacking 17 isolates were detected in the casein whey. Of these, 12 prevented adequate acid production by the appropriate host even at levels below 1 phage per 10 to 1000 ml in the milk before starter addition. In contrast, the first detected phages attacking the other five isolates did not significantly influence the rate of acid development; use of these starters continued until phages which eliminated acid production appeared. An alternative starter system based on the continuous selection of “phage-tolerant” cultures was investigated. Regular addition of whey, from previous manufacture, to the individual mother cultures of each component permitted long-term use of the multiple starter. This procedure of continued selection for phage-tolerant organisms has been used successfully for a complete season in a major casein factory.

Women's Participation in Politics: Ukrainian Case

2014 ◽  
Vol 2013 (3) ◽  
pp. 53-66
Author(s):  
Skovikov Alexey
Keyword(s):  
Political Culture ◽  
Separation Of Powers ◽  
Party Competition ◽  
Political Life ◽  
Ruling Class ◽  
Political Actors ◽  
Women's Participation ◽  
Democratic Transformation ◽  
Selection Of

AbstractThe international practices takes into account the question of women's participation in the political life of modern Ukraine. The selection of the state was due to the dynamic process of democratic transformation - the separation of powers, the formation of multi-party competition among political actors in the electoral process, the activity women in the various institutions of civil society. The position was claimed on the basis of empirical data range of academic institutions and reputable sociological centers, and also interviews with experts who said that the creation of real conditions for self-realization by women's interest in politics is only possible for long term. The process is controversial and caused by political culture, traditions and interests of the ruling class represented mainly by men.

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