scholarly journals A Statistical Analysis of the Lake Levels at Lake Neusiedl

2016 ◽  
Vol 37 (2) ◽  
Author(s):  
Johannes Ledolter
Keyword(s):  
Statistical Analysis ◽  
Generalized Linear Models ◽  
Lake Level ◽  
Linear Models ◽  
Daily Precipitation ◽  
Lake Levels ◽  
Lake Level Changes ◽  
Daily Data ◽  
Eastern Border ◽  
Logistic Regressions

A long record of daily data is used to study the lake levels of Lake Neusiedl, a large steppe lake at the eastern border of Austria. Daily lake level changes are modeled as functions of precipitation, temperature, and wind conditions. The occurrence and the amount of daily precipitation are modeled with logistic regressions and generalized linear models.

scholarly journals An extended history of high-amplitude lake-level changes in tectonically active Lake Issyk-Kul (Kyrgyzstan), as revealed by high-resolution seismic reflection data

2016 ◽  
Author(s):  
A. C. Gebhardt ◽  
Lieven Naudts ◽  
Lies De Mol ◽  
Jan Klerkx ◽  
Kanatbek Abdrakhmatov ◽  
...  
Keyword(s):  
Lake Level ◽  
Circulation Pattern ◽  
High Amplitude ◽  
Lake Levels ◽  
Seismic Profiles ◽  
Seismic Reflection Data ◽  
Air Masses ◽  
Siberian High ◽  
Lake Level Changes ◽  
Reflection Data

Abstract. A total of 84 seismic profiles mainly from the western and eastern deltas of Lake Issyk-Kul were used to identify lake-level changes. Seven stratigraphic sequences were identified each containing a series of delta lobes that were formed during former lake-level stillstands. Lake-level has experienced at least four cycles of stepwise fall and rise of 400 m or more. These fluctuations were mainly caused by past changes in the atmospheric circulation pattern during the past. During periods of low lake levels, the Siberian High likely was strong, bringing dry air masses from the Mongolian steppe. The strong Siberian High blocked the mid-latitude Westerlies. During periods of high lake levels, the Siberian High must have been weaker or displaced, and the mid-latitude Westerlies could bring moister air masses from the Mediterranean and North Atlantic regions.

Changes in the distribution of Poplar Box (Eucalyptus populnea) on major soil groups: An application of the log-linear model.

1981 ◽  
Vol 3 (1) ◽  
pp. 33 ◽  
Author(s):  
RB Cunningham ◽  
AA Webb ◽  
A Mortlock
Keyword(s):  
Statistical Analysis ◽  
Linear Model ◽  
Generalized Linear Models ◽  
Gradient Analysis ◽  
Linear Models ◽  
Geographic Location ◽  
Significance Tests ◽  
Log Linear ◽  
Eucalyptus Populnea ◽  
Soil Groups

The association of poplar box (Eucalyptus populnea) with five main soil groups is examined. A statistical analysis, using a log- linear model, indicated that the relative frequencies of poplar box sites occumng on major soil groups changed with geographic location. The change in distribution is shown to relate to climate, as indicated by summer and winter moisture indices and the diff- erence between them. This study illustrates the use of log-linear models in ecology; such models, and more generally, Generalized Linear Models, in providing significance tests, have advantages over the non-statistical methods of gradient analysis.

scholarly journals High-amplitude lake-level changes in tectonically active Lake Issyk-Kul (Kyrgyzstan) revealed by high-resolution seismic reflection data

2017 ◽  
Vol 13 (1) ◽  
pp. 73-92 ◽  
Author(s):  
Andrea Catalina Gebhardt ◽  
Lieven Naudts ◽  
Lies De Mol ◽  
Jan Klerkx ◽  
Kanatbek Abdrakhmatov ◽  
...  
Keyword(s):  
Lake Level ◽  
Circulation Pattern ◽  
High Amplitude ◽  
Lake Levels ◽  
Seismic Profiles ◽  
Seismic Reflection Data ◽  
Air Masses ◽  
Siberian High ◽  
Lake Level Changes ◽  
Reflection Data

Abstract. A total of 84 seismic profiles, mainly from the western and eastern deltas of Lake Issyk-Kul, were used to identify lake-level changes. Seven stratigraphic sequences were reconstructed, each containing a series of delta lobes that were formed during former lake-level stillstands or during slow lake-level increase or decrease. The lake level has experienced at least four cycles of stepwise rise and fall of 400 m or more. These fluctuations were mainly caused by past changes in the atmospheric circulation pattern. During periods of low lake levels, the Siberian High was likely to be strong, bringing dry air masses from the Mongolian steppe blocking the midlatitude Westerlies. During periods of high lake levels, the Siberian High must have been weaker or displaced, and the midlatitude Westerlies could bring moister air masses from the Mediterranean and North Atlantic regions.

scholarly journals Immunohistochemical Characterization of Tumor-Associated Macrophages in Canine Lymphomas

Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2301
Author(s):  
Sergio Vázquez ◽  
Raquel Vallejo ◽  
José Espinosa ◽  
Noive Arteche ◽  
José A. Vega ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
B Cell ◽  
Generalized Linear Models ◽  
Linear Models ◽  
Histological Grade ◽  
Heterogeneous Population ◽  
High Grade ◽  
B Cell Lymphomas ◽  
Cd20 Antibodies

Macrophages have been confirmed to play a significant role in the behavior of human lymphomas, albeit no consistent data are so far available in canine lymphomas. The present study characterizes the macrophages present in cases of canine nodal lymphoma and their relationship with the histological grade and the immunophenotype. Samples from the lymph nodes of 25 dogs diagnosed with lymphoma were selected. Immunohistochemistry was used to determine the tumor immunophenotype (CD3 and CD20 antibodies) and macrophage characterization (Iba1, MAC387, CD204, CD163 and iNOS antibodies). Macrophage counting was performed in 10 randomly selected, high-power fields per sample. Generalized linear models with Poisson distribution were used for statistical analysis. A significantly greater number of macrophages (Iba1+) were detected in high-grade and B-cell lymphomas. The highest amount of both M1 (iNOS+) and M2 (CD204+ and CD163+) subtypes were observed in B-cell lymphomas. High-grade lymphomas showed a greater number of CD204+ and CD163+ cells and recently recruited MAC387+ macrophages. The latter were most abundant in T than in B-cell lymphomas. In conclusion, a significant population of macrophages is present in canine lymphomas, which constitute a heterogeneous population that shows variations in the amount and immunohistochemical profile according to the histological grade and immunophenotype.

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