137 research outputs found
Editorial Board
Scaffolds match archea, bacteria and virus sequences. (XLSX 140ĆĀ kb
Sadržaj
<p>A redundancy analysis (RDA) biplot based on total OTUs (97% sequence similarity as the cutoff value) for samples collected from five locations with (a) environmental parameters and (b) metals as explanatory variables. *<i>p</i> < 0.05.</p
Clitarchus transcriptome assembly from five different tissues
Transcriptome assembly constructed from C. hookeri female antennae, head and prothorax, midgut, leg and male terminalia. More details are shown in ReadMe file
Early Cretaceous A-type granites and Mo mineralization, Aershan area, eastern Inner Mongolia, Northeast China: geochemical and isotopic constraints
<div><p>The Jiazishan porphyry-type molybdenum deposit is located in the eastern Inner Mongolia Autonomous Region in China. Mineralization occurs mainly as veins, lenses, and layers within the host porphyry. To better understand the link between mineralization and host igneous rocks, we studied samples from underground workings and report new SHRIMP II zircon UāPb and ReāOs molybdenite ages, and geochemical data from both the molybdenites and the porphyry granites. Seven molybdenite samples yield a ReāOs isochron weighted mean age of 135.4Ā Ā±Ā 2.1Ā Ma, whereas the porphyry granite samples yield crystallization ages of 139Ā Ā±Ā 1.5Ā Ma (Jiazishan deposit) and 133Ā Ā±Ā 1Ā Ma (Taolaituo deposit). The UāPb and ReāOs ages are similar, suggesting that the mineralization is genetically related to Early Cretaceous porphyry emplacement. Re contents of the molybdenite range from 21.74Ā ppm to 52.08Ā ppm, with an average of 35.92Ā ppm, whereas Ī“<sup>34Ā </sup>S values of the sulphide vary from 1.3ā° to 4.2ā°. The ores have <sup>206</sup>Pb/<sup>204</sup>Pb, <sup>207</sup>Pb/<sup>204</sup>Pb, and <sup>208</sup>Pb/<sup>204</sup>Pb ratios of 18.178ā18.385, 15.503ā15.613, and 37.979ā38.382, respectively. We also obtained a weighted mean UāPb zircon age of 294.2Ā Ā±Ā 2.1Ā Ma for the oldest granite in Jiazishan area. All granites are A-type granites. These observations indicate that the molybdenites and the porphyry granites were derived from a mixed source involving young accretionary materials and enriched subcontinental lithospheric mantle. A synthesis of geochronological and geological data reveals that porphyry emplacement and Mo mineralization in the Jiazishan deposit occurred contemporaneously with Early Cretaceous tectonothermal events associated with lithospheric thinning, which was caused by delamination and subsequent upwelling of the asthenosphere associated with intra-continental extension in Northeast China.</p></div
Nickel-Catalyzed C(sp<sup>3</sup>)āH Arylation of Diarylmethane Derivatives with Aryl Fluorides
A novel
nickel-catalyzed CĀ(sp<sup>3</sup>)āH arylation with
nonactivated aryl fluorides is reported. The use of 1,3-bisĀ(2,4,6-trimethylphenyl)Āimidazol-2-ylidene
(IMes) as a ligand was found to be critical to the success of the
reaction. This new method enables the synthesis of a wide range of
triarylmethane derivatives
Early Cretaceous adakitic granites and mineralization of the Yili porphyry Mo deposit in the Great Xingāan Range: implications for the geodynamic evolution of northeastern China
<div><p>The Yili porphyry-type molybdenum deposit is located in the Northeastern Inner Mongolia Autonomous Region in China. Mineralization occurs mainly as veins, lenses, and layers within the host porphyry. In order to better understand the link between mineralization and host igneous rocks, we studied samples from underground workings. We report new Sensitive High Resolution Ion Microprobe II (SHRIMP II) zircon UāPb and ReāOs molybdenite ages and geochemical data from the Yili granitoids. Five molybdenite samples yield a ReāOs isochron weighted mean age of 131.1Ā Ā±Ā 3.4 Ma, while two Early Cretaceous adakitic porphyry granite samples yielded crystallization ages of 128.1Ā Ā±Ā 1.6Ā Ma and 129.0Ā Ā±Ā 3.5 Ma. The UāPb and ReāOs ages are analytically indistinguishable, suggesting that mineralization was genetically related to Early Cretaceous magmatism in northeastern China. Ī“<sup>34</sup>S<sub>V-CDT</sub> values of the sulphide vary from 0.3ā° to 3.8ā°. We obtained two weighted mean UāPb zircon ages of 287.7Ā Ā±Ā 1.8Ā Ma for early Permian fine-grained granite and 349.8Ā Ā±Ā 2.3Ā Ma for Early Carboniferous monzogranite in Yili area, respectively. A synthesis of geochronological and geological data reveals that porphyry emplacement and Mo mineralization in the Yili deposit occurred at the same time as Early Cretaceous lithospheric thinning, which was caused by the delamination and subsequent upwelling of the asthenosphere under the intra-continental extension in northeastern China.</p></div
Neighbor-joining phylogenetic tree illustrating the 50 most abundant OTUs (with 97% sequence similarity as the cutoff value) among all the samples collected from the five locations in Singapore.
<p>A bootstrap value greater than 50% is shown (calculated 1,000 times). The color scale indicates the OTU distribution in the different locations.</p
The five mangrove sampling stations located along the Singapore coastline.
<p>Fig 1 was modified from a free picture from Wikipedia. Wikipedia has a free license "Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers".</p
UPGMA clustering of the methanogenic community structures for samples collected from the five locations in Singapore based on total OTUs at the genus level (89% sequence similarity as the cutoff value).
<p>Data were square root transformed and the Bray-Curtis similarity was used for clustering analysis.</p
- ā¦