101 research outputs found
The role of the Kaliningrad region in the development of Russian-German relations
Germany is one of the principal partners
of the Russian Federation. The Kaliningrad
region plays a significant role in the development
of partnership between the two countries,
but the existing opportunities for development
are not fully exploited. This article
analyses the development, current state and
prospects of an increasing role of the region
in Russian-German cooperation. The authors
emphasize the role of the Immanuel Kant Baltic
Federal University as one of the leaders in
the development of research and cultural
links with German universities and research
foundations. This publication is based on the
authors' presentation at the round table discussion
on the cooperation between Russian
and German partner regions held on September
23, 2011 in the framework of the 8th International
Conference on Transborder Cooperation:
the Russian Federation, the European
Union, and Norway (September 22β23,
2011, Kaliningrad). The article considers
topical issues of Russian-German economic
and cultural relations in the Kaliningrad region,
which facilitate the development of Russian
strategy for the integration of northwestern
constituent entities into the economic
and cultural space of the Baltic region
Application of Tornado-flow Fundamental Hydro- dynamic Theory to the Study of Blood Flow in the Heart -Further Development of Tornado-like Jet Technology
ABSTRACT It has been proved previously that the Tornado-like swirling flows have strictly ordered hydrodynamic structure which can be exhaustively described by using the exact solution of non-stationary Navier-Stokes and continuity equations for this class of flows The current study proposes a method of measurement and calculation of the flow structural parameters derived from the exact solution, using LV cavity casts morphometry in humans and dogs and Multislice computed tomography (MSCT) of LV in two patients without severe cardiac pathology. It has been shown that the dynamic expression of intracardiac trabeculae and instant shape of LV cavity within a complete cardiac cycle correspond closely to the stages of single Tornado-like jet evolution. Since the intraventricular trabeculae profile is streamlined continuously by the blood flow, it should determine the hydrodynamic flow structure as an ensemble of guiding vanes. Therefore it has been concluded that the intraventricular flow dynamics can be analyzed and quantified using the exact solution. Application of this analysis to the MSCT visualization of LV cavity dynamics has shown the validity of this approach, which may be used for clinical diagnostic purpose. A realistic mathematical model of intraventricular blood flow has been proposed and evaluated. The results showed a good agreement between the model and known cardiac anatomy and function
ΠΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΠΈ ΠΏΠ»Π°Π·ΠΌΡ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Π΄Π»Ρ ΡΡΠ°ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°ΠΊΡΠΎΡΠ° VIII ΠΏΡΠΈ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠΉ Π² ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ Ρ ΡΠ°Π½Π΅Π½ΠΈΡ ΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΠΈ
The European Pharmacopoeia requires that the transportation and storage of human plasma for fractionation should be carried out at β20 Β°C or below, while allowing for some deviations in the temperature regime. The current Russian regulatory documentation requires the transportation and storage of plasma intended for the production of labile protein preparations (blood clotting factors) atΒ β30 Β°C or lower. However, acceptable deviations from the temperature regime are not specified, which creates certain difficulties in their assessment by an authorised person during plasma batch release. The main tool in risk assessment is in-process control of factor VIII activity in plasma stored at inadequate temperature, which entails significant financial costs. The aim of the study was to assess stability of factor VIII activity in human plasma for fractionation when modeling deviations in the storage and transportation temperature regime and to assess the possibility of amending the regulatory documentation requirements. Materials and methods: only full individual doses of plasma obtained by apheresis were used in the experiments. The tests were performed under simulated high temperature conditions with accurate continuous recording of temperature by a measuring system. An automatic coagulation analyser was used to determine factor VIII activity. Quantitative evaluation of the results was carried out by comparing factor VIII activity in the plasma before freezing and in the tested plasma. Statistical processing of data was performed by descriptive statistics methods using Microsoft Excel 2007 applications. Results: no significant effect of short-term deviations in the storage temperature on the stability of factor VIII activity in human plasma for fractionation was observed. Conclusions: the obtained data can be used as a rationale for introducing changes in the official requirements for the storage and transportation temperature regime for human plasma for fractionation, as well as for including details of acceptable short-term deviations of the storage and transportation temperature regime in the regulatory documentation.ΠΠ²ΡΠΎΠΏΠ΅ΠΉΡΠΊΠΎΠΉ ΡΠ°ΡΠΌΠ°ΠΊΠΎΠΏΠ΅Π΅ΠΉ ΡΠ΅Π³Π»Π°ΠΌΠ΅Π½ΡΠΈΡΡΠ΅ΡΡΡ ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΡΡ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΡ ΠΈ Ρ
ΡΠ°Π½Π΅Π½ΠΈΠ΅ ΠΏΠ»Π°Π·ΠΌΡ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Π΄Π»Ρ ΡΡΠ°ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΠΌΠΈΠ½ΡΡ 20 Β°Π‘ ΠΈ Π½ΠΈΠΆΠ΅, ΠΏΡΠΈ ΡΡΠΎΠΌ Π΄ΠΎΠΏΡΡΠΊΠ°Π΅ΡΡΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠΉ Π² ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅. Π Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ ΡΠΎΠ³Π»Π°ΡΠ½ΠΎ ΡΡΠ΅Π±ΠΎΠ²Π°Π½ΠΈΡΠΌ Π½ΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΠΎΠΉ Π΄ΠΎΠΊΡΠΌΠ΅Π½ΡΠ°ΡΠΈΠΈ Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠΉ Π€Π΅Π΄Π΅ΡΠ°ΡΠΈΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΠ° ΠΈ Ρ
ΡΠ°Π½Π΅Π½ΠΈΠ΅ ΠΏΠ»Π°Π·ΠΌΡ, ΠΏΡΠ΅Π΄Π½Π°Π·Π½Π°ΡΠ΅Π½Π½ΠΎΠΉ Π΄Π»Ρ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π° ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² Π»Π°Π±ΠΈΠ»ΡΠ½ΡΡ
Π±Π΅Π»ΠΊΠΎΠ² (ΡΠ°ΠΊΡΠΎΡΠΎΠ² ΡΠ²Π΅ΡΡΡΠ²Π°Π½ΠΈΡ ΠΊΡΠΎΠ²ΠΈ), Π΄ΠΎΠ»ΠΆΠ½Ρ ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΡΡΡΡ ΠΏΡΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΠΌΠΈΠ½ΡΡ 30 Β°Π‘ ΠΈ Π½ΠΈΠΆΠ΅. ΠΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ Π½Π°Π»ΠΈΡΠΈΡ ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠΉ Π² ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ ΠΏΡΠΈ ΡΡΠΎΠΌ Π½Π΅ ΠΎΠ³ΠΎΠ²Π°ΡΠΈΠ²Π°Π΅ΡΡΡ, ΡΡΠΎ ΡΠΎΠ·Π΄Π°Π΅Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Π½ΡΠ΅ ΡΡΡΠ΄Π½ΠΎΡΡΠΈ Π² ΠΈΡ
ΠΎΡΠ΅Π½ΠΊΠ΅ ΡΠΏΠΎΠ»Π½ΠΎΠΌΠΎΡΠ΅Π½Π½ΡΠΌ Π»ΠΈΡΠΎΠΌ ΠΏΡΠΈ Π²ΡΠΏΡΡΠΊΠ΅ ΡΠ΅ΡΠΈΠΈ ΠΏΠ»Π°Π·ΠΌΡ Π² ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ. ΠΡΠ½ΠΎΠ²Π½ΡΠΌ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠΎΠΌ Π² ΠΎΡΠ΅Π½ΠΊΠ΅ ΡΠΈΡΠΊΠΎΠ² Π²ΡΡΡΡΠΏΠ°Π΅Ρ ΠΌΠ΅ΠΆΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΠΉ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°ΠΊΡΠΎΡΠ° VIII Π² ΠΏΠ»Π°Π·ΠΌΠ΅ Ρ Π½Π°ΡΡΡΠ΅Π½ΠΈΠ΅ΠΌ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΠΆΠΈΠΌΠ°, ΡΡΠΎ Π²Π»Π΅ΡΠ΅Ρ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΡΠ΅ Π·Π°ΡΡΠ°ΡΡ. Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ: ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΠΈ ΠΏΠ»Π°Π·ΠΌΡ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Π΄Π»Ρ ΡΡΠ°ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°ΠΊΡΠΎΡΠ° VIII ΠΏΡΠΈ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠΉ Π² ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ Ρ
ΡΠ°Π½Π΅Π½ΠΈΡ ΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΠΈ Ρ ΠΎΡΠ΅Π½ΠΊΠΎΠΉ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ Π²Π½Π΅ΡΠ΅Π½ΠΈΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ Π² ΡΡΠ΅Π±ΠΎΠ²Π°Π½ΠΈΡ Π½ΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΠΎΠΉ Π΄ΠΎΠΊΡΠΌΠ΅Π½ΡΠ°ΡΠΈΠΈ. ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ: Π² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΡ
ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈ ΡΠΎΠ»ΡΠΊΠΎ ΠΏΠΎΠ»Π½ΡΠ΅ ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡΠ°Π»ΡΠ½ΡΠ΅ Π΄ΠΎΠ·Ρ ΠΏΠ»Π°Π·ΠΌΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°ΡΠ΅ΡΠ΅Π·Π°. ΠΡΠΏΡΡΠ°Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ Π² ΡΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ Ρ ΡΠ΅ΡΠΊΠΎΠΉ, Π½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΠΎΠΉ ΡΠΈΠΊΡΠ°ΡΠΈΠ΅ΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ ΠΈΠ·ΠΌΠ΅ΡΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠΌ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°ΠΊΡΠΎΡΠ° VIII ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ Π½Π° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΠΊΠΎΠ°Π³ΡΠ»ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΌ Π°Π½Π°Π»ΠΈΠ·Π°ΡΠΎΡΠ΅. ΠΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΡ ΠΎΡΠ΅Π½ΠΊΡ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΠ»ΠΈ ΠΏΡΡΠ΅ΠΌ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°ΠΊΡΠΎΡΠ° VIII Π² ΠΏΠ»Π°Π·ΠΌΠ΅ ΠΏΠ΅ΡΠ΅Π΄ Π·Π°ΠΌΠΎΡΠΎΠ·ΠΊΠΎΠΉ ΠΈ ΠΏΠ»Π°Π·ΠΌΠ΅, ΠΏΡΠΎΡΠ΅Π΄ΡΠ΅ΠΉ ΠΈΡΠΏΡΡΠ°Π½ΠΈΡ. Π‘ΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΡΡ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΡ Π΄Π°Π½Π½ΡΡ
ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΎΠΏΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠΉ ΡΡΠ°ΡΠΈΡΡΠΈΠΊΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΏΡΠΈΠΊΠ»Π°Π΄Π½ΡΡ
ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌ Microsoft Excel 2007. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ: ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ ΠΎΡΡΡΡΡΡΠ²ΠΈΠ΅ Π·Π½Π°ΡΠΈΠΌΠΎΠ³ΠΎ Π²Π»ΠΈΡΠ½ΠΈΡ ΠΊΡΠ°ΡΠΊΠΎΡΡΠΎΡΠ½ΡΡ
ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΠΆΠΈΠΌΠ° Ρ
ΡΠ°Π½Π΅Π½ΠΈΡ Π½Π° ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΡ ΠΏΠ»Π°Π·ΠΌΡ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Π΄Π»Ρ ΡΡΠ°ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°ΠΊΡΠΎΡΠ° VIII. ΠΡΠ²ΠΎΠ΄Ρ: ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ ΡΠ²Π»ΡΡΡΡΡ ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π΄Π»Ρ ΠΎΠ±ΡΡΠΆΠ΄Π΅Π½ΠΈΡ Π²ΠΎΠΏΡΠΎΡΠ° ΠΎΠ± ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΈ ΡΠ΅Π³Π»Π°ΠΌΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΠΆΠΈΠΌΠ° Ρ
ΡΠ°Π½Π΅Π½ΠΈΡ ΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΠΈ ΠΏΠ»Π°Π·ΠΌΡ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Π΄Π»Ρ ΡΡΠ°ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ, Π° ΡΠ°ΠΊΠΆΠ΅ Π²Π½Π΅ΡΠ΅Π½ΠΈΡ Π² Π½ΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΡΠ΅ Π΄ΠΎΠΊΡΠΌΠ΅Π½ΡΡ Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ Π΄ΠΎΠΏΡΡΡΠΈΠΌΡΡ
ΠΊΡΠ°ΡΠΊΠΎΡΡΠΎΡΠ½ΡΡ
ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΠΆΠΈΠΌΠ° Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ Ρ
ΡΠ°Π½Π΅Π½ΠΈΡ ΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΠΈ.
Effects of autologous gingiva-derived cells with myogenic potential on regeneration of skeletal muscle
In our recent studies we found for the first time the ability of human multipotent mesenchymal stromal cells (MSCs) derived from alveolar gingiva (alveolar mucosa) to differentiate into myogenic direction. The aim of the present study was to evaluate the effects of autologous gingiva-derived MSCs with myogenic potential on the regeneration of muscular tissue after mechanical damage. The study was conducted on 11 male rabbits. Biopsy of alveolar gingiva was performed at each animal before experiment for autologous MSCs obtainment. Cultures of MSCs were induced in vitro into myogenic direction. To model the damage, the medial heads of the gastrocnemius muscles were intersected on both pelvic limbs of the rabbit. Injection of autologous MSCs was performed on the seventh day after injury into the damaged muscle of one of the extremities, while equal volume of saline (control) was injected into the muscle of the contralateral limb. The animals were sacrificed on 0, 21, and 35 days after the administration of cells. MSCs transplantation led to significant reduction of the area of muscle damage. Immunohistochemical analysis revealed earlier increase in the proportion of MyoD- and myogenin-positive cells, as well as decrease in the expression of Ki-67 in damaged tissue, in experimental group compared to the control. Autologous cells did not significantly affect the composition of muscle fibers. Significant decrease in the proportion of fibrous tissue was also observed in the experimental group. The results indicate the effectiveness of autologous alveolar gingiva-derived MSCs for treatment of mechanical damage of muscle tissue. Local administration of cells accelerated reparative regeneration and prevented fibrosis
From descriptive to predictive distribution models: a working example with Iberian amphibians and reptiles
BACKGROUND: Aim of the study was to identify the conditions under which spatial-environmental models can be used for the improved understanding of species distributions, under the explicit criterion of model predictive performance. I constructed distribution models for 17 amphibian and 21 reptile species in Portugal from atlas data and 13 selected ecological variables with stepwise logistic regression and a geographic information system. Models constructed for Portugal were extrapolated over Spain and tested against range maps and atlas data. RESULTS: Descriptive model precision ranged from 'fair' to 'very good' for 12 species showing a range border inside Portugal ('edge species', kappa (k) 0.35β0.89, average 0.57) and was at best 'moderate' for 26 species with a countrywide Portuguese distribution ('non-edge species', k = 0.03β0.54, average 0.29). The accuracy of the prediction for Spain was significantly related to the precision of the descriptive model for the group of edge species and not for the countrywide species. In the latter group data were consistently better captured with the single variable search-effort than by the panel of environmental data. CONCLUSION: Atlas data in presence-absence format are often inadequate to model the distribution of species if the considered area does not include part of the range border. Conversely, distribution models for edge-species, especially those displaying high precision, may help in the correct identification of parameters underlying the species range and assist with the informed choice of conservation measures
WpΕyw obszarΓ³w zielonych na redukcjΔ obciΔ ΕΌenia haΕasem od autostrady osiedla mieszkaniowego w BriaΕsku
This article discusses the role of green space in reducing the noise level on the example of the park named of honor of Gaidukov in the city of Bryansk. The results of measuring the level of noise in spring and summer, as well as schemes prepared with the application of contour noise were presented.W artykule omΓ³wiono rolΔ zieleni na zmniejszenie poziomu haΕasu na przykΕadzie parku w mieΕcie BriaΕsk. Pomiary poziomu haΕasu wykonano w okresie wiosennym i letnim, przygotowano schemat z zastosowaniem krzywej haΕasu
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