Hydraulic characterization of volcanic rocks in Pahute Mesa using an integrated analysis of 16 multiple-well aquifer tests, Nevada National Security Site, 2009–14

2017 ◽  
Author(s):  
C. Amanda Garcia ◽  
Tracie R. Jackson ◽  
Keith J. Halford ◽  
Donald S. Sweetkind ◽  
Nancy A. Damar ◽  
...  
Keyword(s):  
National Security ◽  
Volcanic Rocks ◽  
Integrated Analysis

Mineralogical characterization of fibrous zeolites from the Kahrizak volcanic suite, south Tehran, Iran

Clay Minerals ◽  
2010 ◽  
Vol 45 (4) ◽  
pp. 507-517 ◽  
Author(s):  
M. Kusehlar ◽  
F. Tutti ◽  
H. Mirnejad ◽  
A. E. Lalonde
Keyword(s):  
Volcanic Rocks ◽  
Hydrothermal Activity ◽  
Scattered Electron ◽  
Northern Iran ◽  
Mineralogical Characterization ◽  
Thin Sections ◽  
Rich Solution ◽  
Cavity Filling ◽  
Fibrous Zeolites

AbstractSelected samples of large cavity filling and vein-type fibrous zeolites from Eocene volcanic rocks in the Kahrizak region, northern Iran, have been studied for their mineralogical and chemical characteristics. X-ray powder diffraction and electron microprobe analyses confirmed the presence of natrolite, mesolite and scolecite with compositions of [Na14.922Ca0.202K0.015Ba0.002] [Al15.697Si24.267O80]·nH2O, [Ca15.714Na14.224][Al46.431Si73.398O240]·nH2O and [Ca7.804Na0.142K0.024Ba0.012Mg0.006][Al15.320Si24.437O80]·nH2O, respectively. In addition, examination of textural relationships in thin sections and back-scattered electron images reveals a paragenetic order in which the Ca-rich zeolites crystallized first. It is most probable that the fibrous zeolites of Kahrizak were formed during two pulses of hydrothermal activity in the area. Scolecite and mesolite were precipitated from Ca-rich solution, whereas the second stage Na-rich, low-temperature fluid crystallized natrolite and reacted with Ca-species.

scholarly journals Mineralogical and Fluid Inclusions Study of Epithermal Type Veins Intruding the Volcanic Rocks of the Kornofolia Area, Evros, NE Greece.

2019 ◽  
Vol 55 (1) ◽  
pp. 202
Author(s):  
Foteini Aravani ◽  
Lambrini Papadopoulou ◽  
Vasileios Melfos ◽  
Triantafillos Soldatos ◽  
Triantafillia Zorba ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Fluid Inclusion ◽  
Hydrothermal Alteration ◽  
Fluid Inclusions ◽  
Volcanic Rocks ◽  
The Other ◽  
Calc Alkaline ◽  
Ft Ir ◽  
Host Rocks

The volcanic rocks of Kornofolia area, Evros, host a number of epithermal-type veins. The host rocks are Oligocene calc-alkaline andesites to rhyo-dacites. The andesites form hydrothermal breccias and show hydrothermal alteration. The veins comprise mainly silica polymorphs such as quartz, chalcedony and three types of opal (milky white, transparent and green). Amethyst also forms in veins at the same area. Apart from the silica polymorphs, the veins are accompanied by calcite and zeolites. The main aim of this study is the characterization of the silica polymorphs. Using FT-IR analyses, variations in the crystal structure of the three opals were recognized. The green opal is found to be more amorphous than the other two types. Fluid-inclusion measurements were performed in calcite and were compared with amethyst from previous studies. The Th is between 121-175 °C and the Te between -22.9 and -22.4 °C. The salinities range from 0.9 to 4.5 wt % NaCl equiv.

Just Whose Side Is Time On?

2007 ◽  
Vol 42 (3-4) ◽  
pp. 263-282 ◽  
Author(s):  
Robert M. Hathaway
Keyword(s):  
National Security ◽  
North Korea ◽  
International Institutions ◽  
Bush Administration ◽  
Military Force ◽  
Security Strategy ◽  
The North ◽  
National Security Strategy ◽  
Multilateral Diplomacy

President Bush's bold National Security Strategy document of September 2002 would appear to have been written with North Korea as much as Iraq in mind. Yet the Bush administration has been uncharacteristically passive in responding to the challenge posed by Pyongyang's nuclear weapons ambitions, especially in comparison with the forceful manner with which the administration dealt with Iraq. In the latter case, Bush mobilized the full weight of military force; seemed disdainful of allies, international institutions and multilateral diplomacy; and moved forward with what his critics deemed reckless abandon. In the case of North Korea, on the other hand, the President has emphasized patience, close coordination with allies and an overall lack of urgency oddly at variance with his `axis of evil' characterization of the regime in Pyongyang, and with dangerous advances in North Korea's nuclear arsenal. This essay attempts to explain the rationale behind the Bush administration's surprisingly relaxed approach to the North Korea challenge.

Combining ExoMars’ Ma_MISS and Drill data

2020 ◽  
Author(s):  
Alessandro Frigeri ◽  
Maria Cristina De Sanctis ◽  
Francesca Altieri ◽  
Simone De Angelis ◽  
Marco Ferrari ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Content ◽  
Large Scale ◽  
Mechanical Response ◽  
European Space Agency ◽  
Volcanic Rocks ◽  
Space Agency ◽  
Geophysical Imaging

<p>The ExoMars Rover and Surface Platform planned for launch in 2022 is a large international cooperation between the European Space Agency and Roscosmos with a scientific contribution from NASA.  Thales Alenia Space is the ExoMars mission industrial prime contractor. </p> <p>Besides sensors and instruments characterizing the surface at large scale, the ExoMars’ rover Rosalind Franklin payload features some experiments devoted specifically to the characterization of the first few meters of the Martian subsurface. These experiments are particularly critical for the main ExoMars objective of detecting traces of present or past life forms on Mars, which may have been preserved within the shallow Martian underground [1].</p> <p>Rosalind Franklin will be able to perform both non-invasive geophysical imaging of the underground [2] and subsurface <em>in situ</em> measurements thanks to the Drill unit installed on the rover. The Drill has been developed by Leonardo and its purposes are 1) to collect core samples to be analyzed in the Analytical Laboratory Drawer (ALD) onboard the Rover and 2) to drive the miniaturized spectrometer Ma_MISS within the borehole.   </p> <p>Ma_MISS (Mars Multispectral Imager for Subsurface Studies, [3]) will collect mineralogic measurements from the rocks exposed into the borehole created by the Drill with a spatial resolution of 120 μm down to 2 meters into the Martian subsurface.</p> <p>Rocks are composed of grains of minerals, and their reaction to an applied stress is related to the mechanical behavior of the minerals that compose the rock itself. The mechanical properties of a mineral depend mainly on the strength of the chemical bonds, the orientation of crystals, and the number of impurities in the crystal lattice.</p> <p>In this context, the integration of Ma_MISS measurements and drill telemetry are of great importance.  The mechanical properties of rocks coupled with their mineralogic composition provide a rich source of information to characterize the nature of rocks being explored by ExoMars rover’s drilling activity.</p> <p>Within our study, we are starting to collect telemetry recorded during the Drill unit tests on several samples ranging from sedimentary to volcanic rocks with varying degrees of weathering and water content.  In this first phase of the study, we focused our attention on the variation of torque and penetration speed between different samples, which have been found to be indicative of a particular type of rock or group of rocks and their water content.  </p> <p>We are planning to analyze the same rocks with the Ma_MISS breadboard creating the link between the mineralogy and the mechanical response of the Drill.      </p> <p>This will put the base for a more comprehensive and rich characterization of the <em>in situ</em> subsurface observation by Rosalind Franklin planned at Oxia Planum, Mars in 2023. </p> <p> </p> <p><strong>Acknowledgments: </strong>We thank the European Space Agency (ESA) for developing the ExoMars Project, ROSCOSMOS and Thales Alenia Space for rover development, and Italian Space Agency (ASI) for funding the Ma_MISS experiment (ASI-INAF contract n.2017-48-H.0 for ExoMars MA_MISS phase E/science).</p> <p> </p> <p><strong>References</strong></p> <p>[1] Vago et al., 2017. Astrobiology, 17 6-7. [2] Ciarletti et al., 2017. Astrobiology, 17 6-7. [3] De Sanctis et al., 2017. Astrobiology, 17 6-7.</p>

scholarly journals Scientific approaches to the system of concepts of "national security": international legal aspect

2020 ◽  
Vol 7 (12) ◽  
pp. 70-77
Author(s):  
А. Альван
Keyword(s):  
National Security ◽  
Legal Aspect ◽  
The State ◽  
Constitutional Rights ◽  
External Threats ◽  
Wide Range ◽  
Single Well ◽  
Definition Of ◽  
The Individual

Scientific approaches to the concept of "national security" are systematized in the article. The author substantiates that there are four main approaches to the concept of "national security". The first group - works devoted to the terminological characterization of national security. Another group - the authors define national security because of the state of protection of vital interests, the individual, society and the state against all kinds of threats. The third group is studies that analyze the types of national security, in particular: economic, environmental, financial, personnel, financial, social, etc. These characteristics reflect their socio-political nature, trace the unity of personal, public and state security, developing political and other processes. The fourth group of studies are those that pay attention to problems related to the correct use of the concept of "national security" and the possibility of its replacement. Fifth group - analyzes the interaction and correlation of threats and security.There is no single, well-defined definition of national security today. No matter what approach the authors use, there are different approaches, and in some cases, complications or simplifications of this category.In our opinion, national security should be understood as a state of protection of the individual, society and state against a wide range of internal and external threats, which ensure the realization of citizens' constitutional rights and freedoms, decent quality and standard of living, sovereignty, independence, state and territorial integrity. , sustainable socio-economic development of the state.

scholarly journals Multi-omic tumor data reveal diversity of molecular mechanisms that correlate with survival

2018 ◽  
Author(s):  
Daniele Ramazzotti ◽  
Avantika Lal ◽  
Bo Wang ◽  
Serafim Batzoglou ◽  
Arend Sidow
Keyword(s):  
Molecular Mechanisms ◽  
Molecular Subtypes ◽  
Point Mutations ◽  
Integrated Analysis ◽  
Tumor Type ◽  
Cancer Subtypes ◽  
Cancer Types ◽  
Copy Number Changes ◽  
Omic Data

Outcomes for cancer patients vary greatly even within the same tumor type, and characterization of molecular subtypes of cancer holds important promise for improving prognosis and personalized treatment. This promise has motivated recent efforts to produce large amounts of multidimensional genomic (‘multi-omic’) data, but current algorithms still face challenges in the integrated analysis of such data. Here we present Cancer Integration via Multikernel Learning (CIMLR), a new cancer subtyping method that integrates multi-omic data to reveal molecular subtypes of cancer. We apply CIMLR to multi-omic data from 36 cancer types and show significant improvements in both computational efficiency and ability to extract biologically meaningful cancer subtypes. The discovered subtypes exhibit significant differences in patient survival for 27 of 36 cancer types. Our analysis reveals integrated patterns of gene expression, methylation, point mutations and copy number changes in multiple cancers and highlights patterns specifically associated with poor patient outcomes.

scholarly journals WGDI: A user-friendly toolkit for evolutionary analyses of whole-genome duplications and ancestral karyotypes

2021 ◽  
Author(s):  
Pengchuan Sun ◽  
Beibei Jiao ◽  
Yongzhi Yang ◽  
Lanxing Shan ◽  
Ting Li ◽  
...  
Keyword(s):  
Detection Algorithm ◽  
Integrated Analysis ◽  
Whole Genome ◽  
Whole Genome Duplications ◽  
Genome Duplications ◽  
Command Line Tool ◽  
Genome Analyses ◽  
Life On Earth ◽  
User Friendly

Evidence of whole-genome duplications (WGDs) and subsequent karyotype changes has been detected in most major lineages of life on Earth. To clarify the complex resulting multiple-layered patterns of gene collinearity in genome analyses there is a need for convenient and accurate toolkits. To meet this need, we introduce here WGDI (Whole-Genome Duplication Integrated analysis), a Python-based command-line tool that facilitates comprehensive analysis of recursive polyploidizations and cross-species genome alignments. WGDI supports three main workflows (polyploid inference, hierarchical inference of genomic homology, and ancestral chromosomal karyotyping) that can improve detection of WGD and characterization of related events. It incorporates a more sensitive and accurate collinearity detection algorithm than previous softwares, and can accelerate WGD-related karyotype research. As a freely available toolkit at GitHub (https://github.com/SunPengChuan/wgdi), WGDI outperforms similar tools in terms of efficiency, flexibility and scalability. In an illustrative example of its application, WGDI convincingly clarified karyotype evolution in Aquilegia coerulea and Vitis vinifera following WGDs and rejected the hypothesis that Aquilegia contributed as a parental lineage to the allopolyploid origin of core dicots.

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