Silicate and Oxide Mineral Chemistry and Textures of the Norilsk-Talnakh Ni-Cu-Platinum Group Element Ore-Bearing Intrusions

2020 ◽  
Vol 115 (6) ◽  
pp. 1227-1243 ◽  
Author(s):  
Louise Schoneveld ◽  
Stephen J. Barnes ◽  
Morgan Williams ◽  
Margaux Le Vaillant ◽  
David Paterson
Keyword(s):  
Mineral Chemistry ◽  
Relative Reduction ◽  
Phase Assemblage ◽  
Significant Drop ◽  
Liquid Component ◽  
Crystallization Sequence ◽  
History Of ◽  
Ultramafic Cumulate ◽  
Insight Into

Abstract A large proportion of the disseminated sulfide ores of the Norilsk-Talnakh camp are hosted within olivine-rich, ultramafic cumulate layers called picro-gabbrodolerite units. In this study we quantitatively analyze the chemistry and textures of the silicate and oxide minerals within olivine-bearing cumulates of the Kharaelakh, Norilsk 1, and Talnakh intrusions to determine how these intrusions compare to each other and to establish the liquidus phase assemblage and crystallization sequence and how the liquid component evolved during solidification. Crystal size distributions indicate that much of the olivine and clinopyroxene oikocrysts grew together in situ as the first of the cumulus phases at contrasting growth rates. These large clinopyroxene oikocrysts record a significant drop in Cr in the system by a significant decrease in Cr content of the outer rims compared to the cores. The chadacrysts of olivine and spinel within the clinopyroxene record the chemistry of the first stages of crystallization, while the minerals in the framework of the cumulate show a relative reduction in Cr and enrichment in incompatible elements such as Ti, Zn, Y, and the rare earth elements, indicative of the enrichment through reactions with the trapped liquid during postcumulate growth. Due to the entrapment of the olivine and spinel in rapidly growing clinopyroxene, these minerals record a history of the changing chemistry during cumulate and postcumulate growth, giving us an insight into the changing conditions during the solidification of intrusions.

scholarly journals Occurrence of Two Distinct Urotensin II-Related Peptides in Zebrafish Provides New Insight into the Evolutionary History of the Urotensin II Gene Family

Endocrinology ◽  
2011 ◽  
Vol 152 (6) ◽  
pp. 2330-2341 ◽  
Author(s):  
Caroline Parmentier ◽  
Emilie Hameury ◽  
Christophe Dubessy ◽  
Feng B. Quan ◽  
Damien Habert ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Close Contact ◽  
Ventral Side ◽  
Pcr Analysis ◽  
Urotensin Ii ◽  
Rt Pcr ◽  
History Of ◽  
The Brain ◽  
Insight Into

The urotensin II (UII) family is currently known to consist of two paralogous peptides, namely UII and UII-related peptide (URP). In contrast to UII, which has been identified in all vertebrate classes so far, URP has only been characterized in tetrapods. We report here the occurrence of two distinct URP genes in teleosts, which we have named URP1 and URP2. Synteny analysis revealed that teleost URP1 and URP2 genes and tetrapod URP genes represent three distinct paralog genes that, together with the UII gene, probably arose from the two rounds of tetraploidization, which took place early in vertebrate evolution. The absence of URP in fish indicates that the corresponding gene has been lost in the teleost lineage, whereas it is likely that both the URP1 and URP2 genes have been lost in the tetrapod lineage. Quantitative RT-PCR analysis revealed that the URP2 gene is mainly expressed in the spinal cord and the brain in adult zebrafish. In situ hybridization experiments showed that in zebrafish embryos, URP2 mRNA-containing cells are located in the floor plate of the neural tube. In adult, URP2-expressing cells occur in close contact with the ventral side of the ependymal canal along the whole spinal cord, whereas in the brain, they are located below the fourth ventricle. These URP-expressing cells may correspond to cerebrospinal fluid-contacting neurons. In conclusion, our study reveals the occurrence of four distinct UII paralogous systems in vertebrates that may exert distinct functions, both in tetrapods and teleosts.

scholarly journals New Clues to Reveal Origins of Hot- and Warm-Jupiter: Mutual Occurrence Rate of Hot Jupiter，Warm Jupiter and Cold Jupiter

2021 ◽  
Author(s):  
Xiangning Su ◽  
Hui Zhang ◽  
Jilin Zhou
Keyword(s):  
Effective Temperature ◽  
Giant Planets ◽  
Detection Methods ◽  
Occurrence Rate ◽  
Origin And Evolution ◽  
History Of ◽  
Stellar Properties ◽  
Insight Into ◽  
Hot Jupiter

Abstract Many works based on the correlations between the occurrence rate of various giant planets and stellar properties of their hosts have provided clues revealing planetary formation processes. However, few researches have focused on the mutual occurrence rate of different type of planets and their dependency upon the stellar properties, which may help to provide an insight into the dynamics evolution history of planetary systems. To investigate the mutual occurrence rates, first we define three types of giant planets, i.e. cold Jupiter(CJ), warm Jupiter(WJ) and hot Jupiter(HJ), according to their position normalized by the snow-line in the system, ap > asnow, 0:1asnow < ap ≤ asnow and ap ≤ 0:1asnow, respectively. Then, we derive their occurrence rates(ηHJ,ηwJ,ηcJ) considering completeness correction caused by different detection methods (RV and transit) and surveys (HARPS& CORALIE and Kepler). Finally, we investigate the correlation between the relative occurrence rates, i.e. ηcJ/ηwJ or ηwJ/ηHJ, and various stellar properties, e.g. stellar metallicity and effective temperature Teff . We find that ηWJ from RV and transit surveys show a similar increasing trend with the increasing stellar effective temperature when Teff ≤ 6100K. While ηcJ from RV samples is almost flat within Teff in (4600K;6100K], and ηHJ from transit samples is increasing with increasing stellar effective temperature within 3600K < Te f f < 7100K. Further more, we find that the mutual occurrence rate between CJ and WJ, i.e. ηcJ/ηwJ , shows a decreasing trend with the increasing stellar effective temperature. In contrary, the ratio ηwJ/ηHJ is reversely depends on the stellar effective temperature. After a series of consistency tests, our results suggest the in-situ hypothesis can be excluded from the formation process of both WJ and HJ. However, the origin and evolution history of HJ may be quite different from that of WJ.

scholarly journals Dvorac Nova Kraljevica: prilozi za povijest gradnje i uređenja

Ars Adriatica ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 129-152
Author(s):  
Petar Puhmajer
Keyword(s):  
Interior Design ◽  
Architectural History ◽  
17Th Century ◽  
Original Function ◽  
History Of Construction ◽  
History Of ◽  
Archival Documentation ◽  
Insight Into

The article deals with the history of construction and renovations, as well as the interior design of the Nova Kraljevica castle. Based on archival sources and in-situ findings, the author has defined the architectural history of the castle starting from the construction for the Zrinski family in the 17th century, renovations for army barracks, hospital and monastery in the 18th and 19th centuries, to the present day. Abundant archival documentation helps gain insight into the castle's original 17th century features, and detect changes it underwent in the later period. The article also discusses the original function of individual rooms, and various elements of the interior design, including their original location.

scholarly journals Petrologic History of Lunar Phosphates Accounts for the Water Content of the Moon’s Mare Basalts

Geosciences ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 421
Author(s):  
Antonio M. Álvarez-Valero ◽  
John F. Pernet-Fisher ◽  
Leo M. Kriegsman
Keyword(s):  
Water Content ◽  
Mineral Chemistry ◽  
Immiscible Liquid ◽  
Crystallization Sequence ◽  
History Of ◽  
Rich Liquid ◽  
Lunar Mare ◽  
Mare Basalts ◽  
Non Destructive ◽  
Melt Pockets

We present reaction balancing and thermodynamic modeling based on microtextural observations and mineral chemistry, to constrain the history of phosphate crystallization within two lunar mare basalts, 10003 and 14053. Phosphates are typically found within intercumulus melt pockets (mesostasis), representing the final stages of basaltic crystallization. In addition to phosphates, these pockets typically consist of Fe-rich clinopyroxene, fayalite, plagioclase, ilmenite, SiO2, and a residual K-rich glass. Some pockets also display evidence for unmixing into two immiscible melts: A Si-K-rich and an Fe-rich liquid. In these cases, the crystallization sequence is not always clear. Despite petrologic complications associated with mesostasis pockets (e.g., unmixing), the phosphates (apatite and merrillite) within these areas have been recently used for constraining the water content in the lunar mantle. We compute mineral reaction balancing for mesostasis pockets from Apollo high-Ti basalt 10003 and high-Al basalt 14053 to suggest that their parental magmas have an H2O content of 25 ± 10 ppm, consistent with reported estimates based on directly measured H2O abundances from these samples. Our results permit to constrain in which immiscible liquid a phosphate of interest crystallizes, and allows us to estimate the extent to which volatiles may have partitioned into other phases such as K-rich glass or surrounding clinopyroxene and plagioclase using a non-destructive method.

Molecular characterization of the recurrent unbalanced translocation der(1;7)(q10;p10)

Blood ◽  
2003 ◽  
Vol 102 (7) ◽  
pp. 2597-2604 ◽  
Author(s):  
Lili Wang ◽  
Seishi Ogawa ◽  
Akira Hangaishi ◽  
Ying Qiao ◽  
Noriko Hosoya ◽  
...  
Keyword(s):  
Fluorescent In Situ Hybridization ◽  
Chromosome 1 ◽  
Structural Basis ◽  
Relative Reduction ◽  
Derivative Chromosome ◽  
Unbalanced Translocation ◽  
Satellite Dnas ◽  
Insight Into

Abstract An unbalanced translocation der(1;7)(q10; p10) is a nonrandom chromosomal aberration commonly observed in myelodysplastic syndrome and acute myeloid leukemia. We molecularly analyzed the breakpoints of der(1;7)(q10;p10) by quantitative fluorescent in situ hybridization (FISH) analyses using centromeric satellite DNAs mapped to chromosomes 1 and 7 as probes. We found that the signal intensities of 2 centromere alphoid probes, D1Z7 on chromosome 1 and D7Z1 on chromosome 7, were almost invariably reduced on the derivative chromosome compared with those on their normal counterparts. These results suggest that this translocation results from the recombination between the 2 alphoids, which was further confirmed by fiber FISH experiments. Because the relative reduction in the intensities of D1Z7 and D7Z1 signals on the derivative chromosomes was highly variable among patients, it was estimated that the breakpoints in these patients were randomly distributed over several megabase pairs within each alphoid cluster except for its extreme end to the short arm. Our results provide a novel insight into the structural basis for generation of this translocation as well as its leukemogenic roles. (Blood. 2003;102:2597-2604)

The Subaltern Speak- A Study On The Culture Of The Arunachalis With Special Reference To Mamang Dai’s The Legends Of Pensam

2019 ◽  
Vol 5 (4) ◽  
pp. 14-20
Author(s):  
Ms. Cheryl Antonette Dumenil ◽  
Dr. Cheryl Davis
Keyword(s):  
Special Reference ◽  
Small World ◽  
Natural World ◽  
Arunachal Pradesh ◽  
North East India ◽  
North East ◽  
Shared History ◽  
History Of ◽  
And Gender ◽  
Insight Into

North- East India is an under veiled region with an awe-inspiring landscape, different groups of ethnic people, their culture and heritage. Contemporary writers from this region aspire towards a vision outside the tapered ethnic channel, and they represent a shared history. In their writings, the cultural memory is showcased, and the intensity of feeling overflows the labour of technique and craft. Mamang Dai presents a rare glimpse into the ecology, culture, life of the tribal people and history of the land of the dawn-lit mountains, Arunachal Pradesh, through her novel The Legends of Pensam. The word ‘Pensam’ in the title means ‘in-between’,  but it may also be interpreted as ‘the hidden spaces of the heart’. This is a small world where anything can happen. Being adherents of the animistic faith, the tribes here believe in co-existence with the natural world along with the presence of spirits in their forests and rivers. This paper attempts to draw an insight into the culture and gender of the Arunachalis with special reference to The Legends of Pensam by Mamang Dai.

Collected Documents on the History of the Pskov Orthodox Mission: A Recent Publication

2018 ◽  
pp. 306-312
Author(s):  
Veniamin F. Zima ◽  
Keyword(s):  
Personal Data ◽  
Prisoners Of War ◽  
Inner Life ◽  
Great Patriotic War ◽  
Occupied Territories ◽  
History Of ◽  
Underground Resistance ◽  
The Baltic ◽  
The Church ◽  
Insight Into

The reviewed work is devoted to a significant, and yet little-studied in both national and foreign scholarship, issue of the clergy interactions with German occupational authorities on the territory of the USSR in the days of the Great Patriotic War. It introduces into scientific use historically significant complex of documents (1941-1945) from the archive of the Office of the Metropolitan Sergius (Voskresensky) of Vilnius and Lithuania, patriarchal exarch in Latvia and Estonia, and also records from the investigatory records on charges against clergy and employees concerned in the activities of the Pskov Orthodox Mission (1944-1990). Documents included in the publication are stored in the archives of Moscow, St. Petersburg, Estonia, Lithuania, Leningrad, Novgorod, and Pskov regions. They allow some insight into nature, forms, and methods of the Nazi occupational regime policies in the conquered territories (including policies towards the Church). The documents capture religious policies of the Nazis and inner life of the exarchate, describe actual situation of population and clergy, management activities and counterinsurgency on the occupied territories. The documents bring to light connections between the exarchate and German counterintelligence and reveal the nature of political police work with informants. They capture the political mood of population and prisoners of war. There is information on participants of partisan movement and underground resistance, on communication net between the patriarchal exarchate in the Baltic states and the German counterintelligence. Reports and dispatches of the clergy in the pay of the Nazis addressed to the Metropolitan Sergius (Voskresensky) contain detailed activity reports. Investigatory records contain important biographical information and personal data on the collaborators. Most of the documents, being classified, have never been published before.

INSIGHT INTO THE DEFORMATION AND MAGMATIC HISTORY OF A LONG-LIVED ARC: THE RECORD PRESERVED IN METASEDIMENTARY ROCKS OF THE NORTH CASCADES ARC, WA

2020 ◽  
Author(s):  
Stacia M. Gordon ◽  
◽  
Kirsten B. Sauer ◽  
Ann E.H. Hanson ◽  
Robert B. Miller ◽  
...  
Keyword(s):  
North Cascades ◽  
Metasedimentary Rocks ◽  
The North ◽  
History Of ◽  
Magmatic History ◽  
Insight Into

The History of the Judahite Bench Tomb

2018 ◽  
Author(s):  
Matthew Suriano
Keyword(s):  
Iron Age ◽  
Hebrew Bible ◽  
Cultural Practices ◽  
Seventh Century ◽  
Mortuary Practices ◽  
Iron Age Ii ◽  
Gradual Development ◽  
History Of ◽  
The Dead ◽  
Insight Into

The history of the Judahite bench tomb provides important insight into the meaning of mortuary practices, and by extension, death in the Hebrew Bible. The bench tomb appeared in Judah during Iron Age II. Although it included certain burial features that appear earlier in the Middle and Late Bronze Ages, such as burial benches, and the use of caves for extramural burials, the Judahite bench tomb uniquely incorporated these features into a specific plan that emulated domestic structures and facilitated multigenerational burials. During the seventh century, and continuing into the sixth, the bench tombs become popular in Jerusalem. The history of this type of burial shows a gradual development of cultural practices that were meant to control death and contain the dead. It is possible to observe within these cultural practices the tomb as a means of constructing identity for both the dead and the living.

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