Avifauna diversity and phenology in a Ramsar site: Lake Tonga (Northeastern Algeria)

Between 2013 and 2016 we conducted an inventory and characterization of aquatic avifauna at Lake Tonga, a Ramsar site. We identified 61 species belonging to 17 families, dominated by Anatidae with 14 species. The inventoried species have different phenological status. Some are known for their regular wintering and some for their summer concentrations, while others are residents year round. Population analysis showed the presence of endangered species such as Oxyura leucocephala, Marmaronetta angustirostris and Aythya nyroca, that are protected by national and/or international laws. Bird counts showed monthly variations in total abundance and richness, peaking during winter. Peak numbers were recorded in February and January, reflecting gatherings to prepare for prenuptial migration. Analysis of diversity and equitability indices indicated that maximum values were generally recorded during the pre– and post–nuptial passages (H’= 3.51 and E = 0.72). Our results reflect the importance of this wetland as a wintering site and nesting site for numerous waterbirds species.

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Cross-population analysis for functional characterization of type II diabetes variants

BMC Bioinformatics ◽

10.1186/s12859-019-2835-0 ◽

2019 ◽

Vol 20 (S12) ◽

Cited By ~ 1

Author(s):

Dalia Elmansy ◽

Mehmet Koyutürk

Keyword(s):

Type Ii Diabetes ◽

Population Analysis ◽

Functional Characterization ◽

Type Ii

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Ni Oxidation State and Ligand Saturation Impact on the Capability of Octaazamacrocyclic Complexes to Bind and Reduce CO2

Molecules ◽

10.3390/molecules26144139 ◽

2021 ◽

Vol 26 (14) ◽

pp. 4139

Author(s):

Barbora Vénosová ◽

Ingrid Jelemenská ◽

Jozef Kožíšek ◽

Peter Rapta ◽

Michal Zalibera ◽

...

Keyword(s):

Quantum Theory ◽

Oxidation State ◽

Central Atom ◽

Population Analysis ◽

Mulliken Population Analysis ◽

Mulliken Population ◽

Theoretical Methods ◽

Ni Oxidation ◽

Shed Light

Two 15-membered octaazamacrocyclic nickel(II) complexes are investigated by theoretical methods to shed light on their affinity forwards binding and reducing CO2. In the first complex 1[NiIIL]0, the octaazamacrocyclic ligand is grossly unsaturated (π-conjugated), while in the second 1[NiIILH]2+ one, the macrocycle is saturated with hydrogens. One and two-electron reductions are described using Mulliken population analysis, quantum theory of atoms in molecules, localized orbitals, and domain averaged fermi holes, including the characterization of the Ni-CCO2 bond and the oxidation state of the central Ni atom. It was found that in the [NiLH] complex, the central atom is reduced to Ni0 and/or NiI and is thus able to bind CO2 via a single σ bond. In addition, the two-electron reduced 3[NiL]2− species also shows an affinity forwards CO2.

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The hydrogeochemical characterization of Morsott-El Aouinet aquifer, Northeastern Algeria

Environmental Geology ◽

10.1007/s00254-008-1667-4 ◽

2009 ◽

Vol 58 (7) ◽

Cited By ~ 17

Author(s):

Ch. Fehdi ◽

Aek. Rouabhia ◽

F. Baali ◽

A. Boudoukha

Keyword(s):

Hydrogeochemical Characterization ◽

Northeastern Algeria

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First Look at the Occurrence of Horizontally Oriented Ice Crystals over Summit, Greenland

10.5194/acp-2016-1134 ◽

2017 ◽

Author(s):

Sebastian Cole ◽

Ryan R. Neely III. ◽

Robert A. Stillwell

Keyword(s):

Ground Level ◽

Cirrus Clouds ◽

Ice Crystals ◽

Wind Speeds ◽

Microphysical Properties ◽

Stratiform Clouds ◽

Monthly Changes ◽

Microphysical Processes ◽

Monthly Variations

Abstract. The microphysical properties of clouds play a significant role in determining their radiative effect; one of these properties is the orientation of ice crystals. A source of error in current microphysical retrievals and model simulations is the assumption that clouds are composed of only randomly oriented ice crystals (ROIC). This assumption is frequently not true, as evidenced by optical phenomena such as parhelia (commonly referred to as sundogs). Here, observations from the Cloud, Aerosol and Polarization Backscatter Lidar (CAPABL) at Summit, Greenland are utilized along with instruments that are part of the Integrated Characterization of Energy, Clouds, Atmospheric state and Precipitation at Summit (ICECAPS) project in order to determine when, where and under what conditions horizontally oriented ice crystals (HOIC) occur at Summit, Greenland. Between July 2015 and May 2016, HOIC are observed on 86 days of the 335-day study. HOIC occurred within stratiform clouds on 48 days, in precipitation on 32 days and in cirrus clouds on 14 days. Analysis of all of the cases found that, on average, in comparison to ROIC, HOIC occur at higher temperatures, higher wind speeds and lower heights above ground level. Differences were also present in the relative humidities (RHs) at which HOIC and ROIC occurred in stratiform clouds and precipitation but not in cirrus clouds. Analysis over the whole study period revealed monthly variations in the abundance of HOIC with the number of detections peaking in April and October. Monthly changes were also present in the number of days containing HOIC. The results presented here aim to be the first step towards a comprehensive climatology and understanding of the microphysical processes that lead to the formation of HOIC at Summit, Greenland.

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The hydrochemical characterization of the high plains aquifers: case of the plain of F’kirina Ain-Beïda, Northeastern Algeria

10.5004/dwt.2017.21507 ◽

2017 ◽

Vol 92 ◽

pp. 90-97

Author(s):

Djoudi Salima ◽

Houha Belgacem

Keyword(s):

High Plains ◽

Hydrochemical Characterization ◽

Northeastern Algeria

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Spatial and Temporal Heavy Metal Distribution and Surface Water Characterization of Kanjli Wetland (a Ramsar site), India Using Different Indices

Bulletin of Environmental Contamination and Toxicology ◽

10.1007/s00128-017-2194-3 ◽

2017 ◽

Vol 99 (6) ◽

pp. 735-742 ◽

Cited By ~ 3

Author(s):

Navdeep Singh ◽

Manpreet Kaur ◽

Jatinder Kaur Katnoria

Keyword(s):

Heavy Metal ◽

Surface Water ◽

Metal Distribution ◽

Ramsar Site ◽

Heavy Metal Distribution

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Kinematics and stellar populations of the double-barred early-type galaxy NGC357

Proceedings of the International Astronomical Union ◽

10.1017/s1743921308017493 ◽

2007 ◽

Vol 3 (S245) ◽

pp. 137-138

Author(s):

Adriana de Lorenzo-Cáceres ◽

Alexandre Vazdekis ◽

J. Alfonso L. Aguerri

Keyword(s):

Radial Velocity ◽

Stellar Population ◽

Velocity Dispersion ◽

Population Analysis ◽

Stellar Populations ◽

Abundance Ratio ◽

Complete Characterization ◽

Early Type ◽

Early Type Galaxy

AbstractWe have carried out a kinematical and stellar population analysis of the double-barred galaxy NGC357 to provide a more complete characterization of these systems and their role in the formation of galaxy bulges. We clearly identify the presence of the inner bar in the radial velocity and velocity dispersion profiles. The age, metallicity and [Mg/Fe] abundance ratio estimates are very similar to those of ellipticals of equivalent central σ. The [Mg/Fe] value for the bulge of this galaxy suggests formation timescales shorter than 1Gyr.

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From Bivariate to Multivariate Analysis of Cytometric Data: Overview of Computational Methods and Their Application in Vaccination Studies

Vaccines ◽

10.3390/vaccines8010138 ◽

2020 ◽

Vol 8 (1) ◽

pp. 138 ◽

Cited By ~ 2

Author(s):

Simone Lucchesi ◽

Simone Furini ◽

Donata Medaglini ◽

Annalisa Ciabattini

Keyword(s):

Population Analysis ◽

Single Cells ◽

Functional Characterization ◽

Automated Analysis ◽

Cell Populations ◽

Computational Tools ◽

Multiparametric Flow Cytometry ◽

Functional Features ◽

Automated Tools

Flow and mass cytometry are used to quantify the expression of multiple extracellular or intracellular molecules on single cells, allowing the phenotypic and functional characterization of complex cell populations. Multiparametric flow cytometry is particularly suitable for deep analysis of immune responses after vaccination, as it allows to measure the frequency, the phenotype, and the functional features of antigen-specific cells. When many parameters are investigated simultaneously, it is not feasible to analyze all the possible bi-dimensional combinations of marker expression with classical manual analysis and the adoption of advanced automated tools to process and analyze high-dimensional data sets becomes necessary. In recent years, the development of many tools for the automated analysis of multiparametric cytometry data has been reported, with an increasing record of publications starting from 2014. However, the use of these tools has been preferentially restricted to bioinformaticians, while few of them are routinely employed by the biomedical community. Filling the gap between algorithms developers and final users is fundamental for exploiting the advantages of computational tools in the analysis of cytometry data. The potentialities of automated analyses range from the improvement of the data quality in the pre-processing steps up to the unbiased, data-driven examination of complex datasets using a variety of algorithms based on different approaches. In this review, an overview of the automated analysis pipeline is provided, spanning from the pre-processing phase to the automated population analysis. Analysis based on computational tools might overcame both the subjectivity of manual gating and the operator-biased exploration of expected populations. Examples of applications of automated tools that have successfully improved the characterization of different cell populations in vaccination studies are also presented.

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