Characterization of Baker Fjord region through its heavy metal content on sediments (Central Chilean Patagonia)

The spatial distribution of heavy metals content (Ba, Cd, Cu, Pb, Sr and Zn) in sediments of the Baker Fjord and surrounding channels in the central region of the Chilean fjords (47°45'S, 48°15'S) is analyzed. The aim of the study was characterized the patterns of abundance and distribution of these metals in surface sediments. The area corresponds to a poorly studied zone with low human activity. Distribution patterns would be influenced by rainfall conditions (local erosion), fluvial (continental sediments carried by rivers), glacier (glacier flour) and estuarine circulation. Cluster analysis allows differentiation among the sampled sites and group with similar characteristics. Finally, the concentrations found were contrasted with average values of metamorphic rocks and show with some certainty that the values found for calendar for this area and the greatest concentrations are the result of natural enrichment.

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Geochemical characterization of surface sediments from the Ridracoli reservoir area and surroundings, Italy. Details on bulk composition and grain size

Journal of Geochemical Exploration ◽

10.1016/j.gexplo.2021.106863 ◽

2021 ◽

pp. 106863

Author(s):

Simone Toller ◽

Valerio Funari ◽

Ivo Vasumini ◽

Enrico Dinelli

Keyword(s):

Grain Size ◽

Surface Sediments ◽

Bulk Composition ◽

Reservoir Area ◽

Geochemical Characterization

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Cysteine-Free Proteins in the Immunobiology of Arthropod-Borne Diseases

Journal of Biomedicine and Biotechnology ◽

10.1155/2010/171537 ◽

2010 ◽

Vol 2010 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

J. Santiago Mejia ◽

Erik N. Arthun ◽

Richard G. Titus

Keyword(s):

Plasmodium Falciparum ◽

Amino Acid ◽

Distribution Patterns ◽

Structural Features ◽

Structure And Function ◽

Cysteine Residues ◽

Distribution Analysis ◽

And Function ◽

Abundance And Distribution ◽

Host Parasite

One approach to identify epitopes that could be used in the design of vaccines to control several arthropod-borne diseases simultaneously is to look for common structural features in the secretome of the pathogens that cause them. Using a novel bioinformatics technique, cysteine-abundance and distribution analysis, we found that many different proteins secreted by several arthropod-borne pathogens, includingPlasmodium falciparum, Borrelia burgdorferi, and eight species of Proteobacteria, are devoid of cysteine residues. The identification of three cysteine-abundance and distribution patterns in several families of proteins secreted by pathogenic and nonpathogenic Proteobacteria, and not found when the amino acid analyzed was tryptophan, provides evidence of forces restricting the content of cysteine residues in microbial proteins during evolution. We discuss these findings in the context of protein structure and function, antigenicity and immunogenicity, and host-parasite relationships.

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Characterization of lithogenic and biogenic zones and natural enrichment of nickel in sediments of the Terminos Lagoon, Campeche, Mexico

Estuarine Coastal and Shelf Science ◽

10.1016/j.ecss.2014.11.007 ◽

2015 ◽

Vol 156 ◽

pp. 116-123 ◽

Cited By ~ 10

Author(s):

Víctor R. Magallanes-Ordóñez ◽

Ana J. Marmolejo-Rodríguez ◽

Griselda M. Rodríguez-Figueroa ◽

Alberto Sánchez-González ◽

Sergio Aguíñiga-García ◽

...

Keyword(s):

Terminos Lagoon ◽

Natural Enrichment

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Characterization of High-Copy-Number Retrotransposons From the Large Genomes of the Louisiana Iris Species and Their Use as Molecular Markers

Genetics ◽

10.1093/genetics/164.2.685 ◽

2003 ◽

Vol 164 (2) ◽

pp. 685-697 ◽

Cited By ~ 1

Author(s):

Edward K Kentner ◽

Michael L Arnold ◽

Susan R Wessler

Keyword(s):

Molecular Markers ◽

Copy Number ◽

High Copy Number ◽

Marker System ◽

Transposon Display ◽

Plant Genomes ◽

Large Plant ◽

Backcross Hybrids ◽

Abundance And Distribution

Abstract The Louisiana iris species Iris brevicaulis and I. fulva are morphologically and karyotypically distinct yet frequently hybridize in nature. A group of high-copy-number TY3/gypsy-like retrotransposons was characterized from these species and used to develop molecular markers that take advantage of the abundance and distribution of these elements in the large iris genome. The copy number of these IRRE elements (for iris retroelement), is ∼1 × 105, accounting for ∼6–10% of the ∼10,000-Mb haploid Louisiana iris genome. IRRE elements are transcriptionally active in I. brevicaulis and I. fulva and their F1 and backcross hybrids. The LTRs of the elements are more variable than the coding domains and can be used to define several distinct IRRE subfamilies. Transposon display or S-SAP markers specific to two of these subfamilies have been developed and are highly polymorphic among wild-collected individuals of each species. As IRRE elements are present in each of 11 iris species tested, the marker system has the potential to provide valuable comparative data on the dynamics of retrotransposition in large plant genomes.

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Preparation and characterization of high metal content Pt–Ru alloy catalysts on various carbon blacks for DMFCs

Electrochimica Acta ◽

10.1016/j.electacta.2006.03.098 ◽

2006 ◽

Vol 52 (4) ◽

pp. 1697-1702 ◽

Cited By ~ 36

Author(s):

Kookil Han ◽

Jaeseung Lee ◽

Hasuck Kim

Keyword(s):

Metal Content ◽

Carbon Blacks ◽

High Metal Content ◽

High Metal ◽

Alloy Catalysts

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Amphibole and mica 40Ar/39Ar ages from the Kaipokok and Aillik domains, Makkovik Province, Labrador: towards a characterization of back-arc processes in the Paleoproterozoic

Canadian Journal of Earth Sciences ◽

10.1139/e01-097 ◽

2002 ◽

Vol 39 (5) ◽

pp. 749-764 ◽

Cited By ~ 6

Author(s):

Nicholas Culshaw ◽

Peter Reynolds ◽

Gavin Sinclair ◽

Sandra Barr

Keyword(s):

Thermal Effect ◽

Shear Zone ◽

Second Order ◽

Greenschist Facies ◽

Metamorphic Rocks ◽

Arc Magmatism ◽

First Order ◽

Back Arc ◽

Order Pattern

We report amphibole and mica 40Ar/39Ar ages from the Makkovik Province. Amphibole ages from metamorphic rocks decrease towards the interior of the province, indicating a first-order pattern of monotonic cooling with progressive migration of the province into a more distal back-arc location. The amphibole data, in combination with muscovite ages, reveal a second-order pattern consisting of four stages corresponding to changing spatial and temporal configurations of plutonism and deformation. (1) The western Kaipokok domain cooled through muscovite closure by 1810 Ma, long after the cessation of arc magmatism. (2) The Kaipokok Bay shear zone, bounding the Kaipokok and Aillik domains, cooled through amphibole closure during 18051780 Ma, synchronous with emplacement of syn-tectonic granitoid plutons. (3) Between 1740 and 1700 Ma, greenschist-facies shearing occurred along the boundary between the Kaipokok domain and Nain Province synchronous with A-type plutonism and localized shearing in the western Kaipokok domain, cooling to muscovite closure temperatures in the Kaipokok Bay shear zone, and A-type plutonism and amphibole closure or resetting in the Aillik domain. (4) In the period 16501640 Ma, muscovite ages, an amphibole age from a shear zone, and resetting of plutonic amphibole indicate a thermal effect coinciding in part with Labradorian plutonism in the Aillik domain. Amphibole ages from dioritic sheets in the juvenile Aillik domain suggest emplacement between 1715 and 1685 Ma. Amphibole ages constrain crystallization of small mafic plutons in the Kaipokok domain (reworked Archean foreland) to be no younger than 16701660 Ma. These ages are the oldest yet obtained for Labradorian plutonism in the Makkovik Province.

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Characterization of green coffee varieties according to their metal content

Analytica Chimica Acta ◽

10.1016/s0003-2670(97)00610-7 ◽

1998 ◽

Vol 358 (2) ◽

pp. 177-183 ◽

Cited By ~ 42

Author(s):

M.J Martı́n ◽

F Pablos ◽

A.G González

Keyword(s):

Metal Content ◽

Green Coffee

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Characterization of Each St and Y Genome Chromosome of Roegneria grandis Based on Newly Developed FISH Markers

Cytogenetic and Genome Research ◽

10.1159/000515623 ◽

2021 ◽

pp. 213-222

Author(s):

Dandan Wu ◽

Xiaoxia Zhu ◽

Lu Tan ◽

Haiqin Zhang ◽

Lina Sha ◽

...

Keyword(s):

Structural Changes ◽

Distribution Patterns ◽

Proximal Region ◽

Genome Chromosome ◽

High Affinity ◽

Complete Set ◽

Genome Analyses ◽

First Time ◽

Homoeologous Chromosomes

The genera of the tribe Triticeae (family Poaceae), constituting many economically important plants with abundant genetic resources, carry genomes such as St, H, P, and Y. The genome symbol of Roegneria C. Koch (Triticeae) is StY. The St and Y genomes are crucial in Triticeae, and tetraploid StY species participate extensively in polyploid speciation. Characterization of St and Y nonhomologous chromosomes in StY-genome species could help understand variation in the chromosome structure and differentiation of StY-containing species. However, the high genetic affinity between St and Y genome and the deficiency of a complete set of StY nonhomologous probes limit the identification of St and Y genomes and variation of chromosome structures among Roegneria species. We aimed to identify St- and Y-enhanced repeat clusters and to study whether homoeologous chromosomes between St and Y genomes could be accurately identified due to high affinity. We employed comparative genome analyses to identify St- and Y-enhanced repeat clusters and generated a FISH-based karyotype of R. grandis (Keng), one of the taxonomically controversial StY species, for the first time. We explored 4 novel repeat clusters (StY_34, StY_107, StY_90, and StY_93), which could specifically identify individual St and Y nonhomologous chromosomes. The clusters StY_107 and StY_90 could identify St and Y addition/substitution chromosomes against common wheat genetic backgrounds. The chromosomes V_St, VII_St, I_Y, V_Y, and VII_Y displayed similar probe distribution patterns in the proximal region, indicating that the high affinity between St and Y genome might result from chromosome rearrangements or transposable element insertion among V_St/Y, VII_St/Y, and I_Y chromosomes during allopolyploidization. Our results can be used to employ FISH further to uncover the precise karyotype based on colinearity of Triticeae species by using the wheat karyotype as reference, to analyze diverse populations of the same species to understand the intraspecific structural changes, and to generate the karyotype of different StY-containing species to understand the interspecific chromosome variation.

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