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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Anatomical dissection of the calcaneofibular ligament of the ankle – a macroscopic and morphometric study

100%
Yabka A., Bahia H.
Journal of Pre-Clinical and Clinical Research
|
2021
|
tom 15
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nr 3
2

On the instabilities of estimated distributions of the POT (Peak Over Threshold) low flow characteristics

86%
Jakubowski W.
Meteorology Hydrology and Water Management. Research and Operational Applications
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2015
|
tom 03
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nr 2
In a certain stream gauge profile, consider the low flow flows determined with the POT (Peak Over Threshold) method. Each of the flows can be described by three characteristics – deficit, duration and minimal flow. Values of the three-dimensional random variable depend on the choice of truncation level Qg (threshold flow) – POT method parameter. It is typically assumed that the threshold level is included within the range from Q95% to Q60% (Tallaksen, van Lanen 2004). However, in computational practice the Qg value is determined at the level of either Q90% to Q70%. This choice is made mainly from the hydrological (not statistical) point of view. In this paper the influence of the threshold flow on the form of estimated distributions of each of the above three characteristics is considered. The following distributions are chosen: − GEV (generalised extreme value distribution) – while examining the distribution of extremes; − log-normal – in the non-extreme case. In each of the examined stream gauge profiles the following algorithm was used: 1. from the curve of duration sums, two flow values Q90% and Q55% are chosen 2. for each flow from the range (Q90%, Q55%), using the Zelenhasić method (1987), a three-dimensional sequence is determined of observed deficits, durations and minimal flow values; 3. for each of the one-dimensional sequences, the parameters of the above distributions are estimated. The variability of the estimated quantiles and their intervals of confidence were shown with the example of three gauge profiles – Kuripapango (New Zealand), Bogusław (Prosna) and Bystrzyca Kłodzka (Nysa Kłodzka).
3

Instability of hybrid plasmids in Bacillus subtilis

86%
Wojcik K., Wieckiewicz J., Kuczma M., Porwit-Bobr Z.
Acta Microbiologica Polonica
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1993
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tom 42
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nr 2
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Climate of long internal waves and resuspension on the coastal shelf

72%
Bogucki D. J., Redekopp L. G.
Oceanologia
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2008
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tom 50
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nr 1
5-21
Observations of the shelf environment rarely associate internal solitary waves (ISWs) with the impact of their passage. An experiment observed during the Coastal Mixing and Optics 1996( CMO ’96), a sequence of long internal waves on a coastal shelf is reported, including both mode-1 and mode-2 waves, together with evidence related to the interaction of propagating ISWs and the benthic boundary layer. The observed ISW dynamics is shown to present a repetitive pattern or ‘climate cycle’. The ISW-associated benthic signature described here occurs frequently (at least once a day) in the CMO ’96coastal area and suggests that ISWs under calm, summer-like conditions may have a decisive influence on the fate of near-bottom pollutants or biological processes in shelf regions.
5

Innovative technologies of anticrisis management for production-transport complex

72%
Ramazanov S.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2010
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tom 10B
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Phyllotaxis instability - exploring the depths of first available space

72%
Szpak M., Zagorska-Marek B.
Acta Societatis Botanicorum Poloniae
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2011
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tom 80
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nr 4
The theoretical analysis of the consequences of the phyllotactic pattern being propagated according to the first available space rule has revealed that all monojugate patterns, with the exception of the main Fibonacci pattern, should become developmentally unstable in their low expressions. This fact explains why the main Fibonacci pattern plays the dominant role among other patterns of spiral phyllotaxis. The probability that the pattern becomes unstable varies for different patterns, which likely makes them more or less frequent, and thus easier or more difficult to encounter in nature. The unstable pattern inevitably transforms into another, as the computer simulations show. Theoretically predicted instability of low order phyllotaxis may be treated as one of the causes of natural ontogenetic transitions, occurring in plants. This, however, still does not explain why in nature some patterns with high order of phyllotaxis also change, quite readily one into the other, in shoot apical meristem’s ontogeny.
7

The extremeness of extreme events

72%
Thornes J. B.
Geographia Polonica
|
2003
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tom 76
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nr 2
8

Uwarunkowania strukturalnej niestabilnosci chromosomow bydla

44%
Danielak-Czech B.
Biuletyn Informacyjny. Instytut Zootechniki
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2001
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tom 39
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nr 4
5-14
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