scholarly journals PETROGRAPHIC CHARACTERISTICS OF MAFIC EXTRUSIVE ROCKS ALONG THE SOUTHWESTERN PART OF MAJEVICA

2017 ◽  
Vol 1 (16) ◽  
Author(s):  
Alisa Babajić ◽  
Elvir Babajić ◽  
Danica Srećković-Batoćanin ◽  
Dragan Milovanović
Keyword(s):  
Coarse Grained ◽  
Southwestern Part ◽  
Classification Schemes ◽  
Massive Structure ◽  
Texture Type ◽  
Alteration Processes ◽  
Extrusive Rock ◽  
Recent Classification ◽  
Composition Structure ◽  
Definition Of

Total number of nineteen mafic extrusive rock samples is subjected to the detailed optical examination.Based on definition of mineral composition, structure, texture, type and intensity of alteration processes,and taking into consideration the recent classification schemes, different lithotypes are defined. Themost frequent are spilites distinguished by classical "spilite" mineralogy (albite), and very often with"quench" texture and amygdaloidal structure. Diabases consist of primary plagioclase andclinopyroxene which are often decomposed and disintegrated. Diabase rocks are mostly characterisedwith ophitic texture and massive structure. Coarse grained varieties are characterized as dolerites, therocks in which intensity of alteration process is significantly lower than in previous lithotypes. Varietieswith frequent occurrences of amphibole got adjective amphibolic. The most common and the mostintense alteration processes are albitization and chloritization. Alteration processes of lower intensityare actinolitization, pumpellytization, zeolitization, carbonation-calcitization, limonitization,kaolinitization and silicification. Depending on alteration degree a certain lithotypes are named withprefix meta (metadiabases and metadolerites).

scholarly journals From genomes to systems: the path with yeast

2006 ◽  
Vol 361 (1467) ◽  
pp. 477-482 ◽  
Author(s):  
Stephen G Oliver
Keyword(s):  
Eukaryotic Cell ◽  
Metabolic Control Analysis ◽  
Coarse Grained ◽  
Control Analysis ◽  
Individual Gene ◽  
Metabolic Systems ◽  
Genes Encoding ◽  
Balance Analysis ◽  
Definition Of ◽  
The Impact

Metabolic Control Analysis (MCA) is a conceptual and mathematical formalism that models the relative contributions of individual effectors in a pathway to both the flux through the pathway and the concentrations of individual intermediates within it. To exploit MCA in an initial Systems Biology analysis of the eukaryotic cell, two categories of experiments are required. In category 1 experiments, flux is changed and the impact on the levels of the direct and indirect products of gene action is measured. We have measured the impact of changing the flux on the transcriptome, proteome and metabolome of Saccharomyces cerevisiae . In this whole-cell analysis, flux equates to growth rate. In category 2 experiments, the levels of individual gene products are altered, and the impact on the flux is measured. We have used competition analyses between the complete set of heterozygous yeast deletion mutants to reveal genes encoding proteins with high flux control coefficients. These genes may be exploited, in a top-down analysis, to build a coarse-grained model of the eukaryotic cell, as exemplified by yeast. More detailed modelling requires that ‘natural’ biological systems be identified. The combination of flux balance analysis with both genetics and metabolomics in the definition of metabolic systems is discussed.

Step-pool and cascade morphology, Mosquito Creek, British Columbia: a test of four analytical techniques

2002 ◽  
Vol 39 (4) ◽  
pp. 493-503 ◽  
Author(s):  
C L Wooldridge ◽  
E J Hickin
Keyword(s):  
Spectral Analysis ◽  
Analytical Techniques ◽  
Power Spectral Analysis ◽  
The Other ◽  
Coarse Grained ◽  
Mountain Stream ◽  
Zero Crossing ◽  
Visual Identification ◽  
Power Spectral ◽  
Definition Of

The identification and geometric definition of individual cascade and step-pool bedforms are investigated in a steep, coarse-grained, mountain stream, Mosquito Creek, by testing four analytical techniques: visual identification, zero-crossing, bedform differencing, and power spectral analysis. The test is the first use of these techniques in a headwater stream, and the analysis of two bed profiles showed that visual identification was able to (i) identify, (ii) determine the geometry of, and (iii) classify the type of individual bedforms better than the other methods. The other techniques were not able to differentiate step-pools from cascades, and the large range of grain sizes and bedform heights hampered their ability to consistently identify stepped bedforms. The step-pool (pronounced, channel-spanning steps that alternate with channel-spanning pools) and cascade (multi-tiered, partially channel-spanning structures) morphology in Mosquito Creek has formed in the last 20 years as fluvial action has restructured its previously engineered, revetment-lined, planar bed. The channel bed exhibits a morphologic regularity that power spectral analysis captured as periodic fluctuations in the bed profiles, with mean wavelengths slightly greater than those identified by the other methods. Further, the active reorganization of revetment has formed stepped structures with geometries similar (i.e., height to wavelength ratios) to stepped features found in natural mountain streams. Channel slope partially controlled bedform geometry (wavelength and height), and bedform height weakly controlled individual step spacing, but there was no relation between wavelength and grain size (D90).

scholarly journals CHOREOGRAPHIC WORKS AS OBJECTS OF FORENSIC EXPERTISE: KEY FEATURES AND APPROACHES TO SOLVING EXPERT TASKS

2019 ◽  
pp. 791-803
Author(s):  
N. Kisil
Keyword(s):  
Forensic Expertise ◽  
Work Style ◽  
Early Use ◽  
Composition Structure ◽  
Artistic Images ◽  
Definition Of ◽  
Artistic Image ◽  
Special Relevance ◽  
External Form ◽  
Individual Style

A research aim was to investigate signs peculiar to choreographic works, as objects of copyright. Will consider, what elements of choreographic results can be attributed to maintenance, and also internal and external forms, and also to offer approach to the decision of set certain tasks. Identification of the main features of choreographic works has a special relevance for the methodological provision of forensic expert activity. It was established that the main tasks of the forensic expertise of choreographic works are: the definition of the object of copyright law in the object of research; definition in the object of the research or its part of signs of originality and creative nature; establishing the fact of reproduction of a choreographic work; establishing a method for its use or processing. The results of the conducted research indicate that the elements of the internal form of choreographic works may include the artistic image, composition, structure of the work. The elements of the external form – the choreographic work of the work (choreographic vocabulary of the work, style of speech), that is, the author’s own means and techniques of creating artistic images, with which plastic dance images are created. During realization of expertise it is expedient to investigate the next elements of choreographic language works: composition of motions, gestures, poses, mimicry; harmoniousness of motions and poses, plastic expressiveness and mimicry, rate and rhythm of motion, spatial picture; light and colour decisions; stage sceneries, suits, make-up and hair-dos of actors; individual style of motion (handwriting of motions) etc. At establishment of fact of the complete or partial use of choreographic work an expert on the stage of comparative research conducts the analysis of language elements of the investigated works, methods of their selection, use, mutual combination and correlation. The elements of maintenance and form of these works are thus analysed, in particular, features of expression of their internal and external form. In the process of research the special attention applies on facts that can testify to more early use by other authors of analogical choreographic elements. It also establishes the originality of the used choreographic vocabulary of the work, means and methods of creating artistic images. Key words: choreographic works, forms of work, expert practice, objects of copyright.

scholarly journals Functional background of the Tsallis entropy: "coarse-grained" systems and "kappa" distribution functions

2000 ◽  
Vol 7 (3/4) ◽  
pp. 211-221 ◽  
Author(s):  
A. V. Milovanov ◽  
L. M. Zelenyi
Keyword(s):  
Coarse Graining ◽  
Statistical Weight ◽  
Distribution Functions ◽  
Tsallis Entropy ◽  
Coarse Grained ◽  
Stat Phys ◽  
Canonical Distribution ◽  
Generalized Entropy ◽  
Long Range Correlations ◽  
Definition Of

Abstract. The concept of the generalized entropy is analyzed, with the particular attention to the definition postulated by Tsallis [J. Stat. Phys. 52, 479 (1988)]. We show that the Tsallis entropy can be rigorously obtained as the solution of a nonlinear functional equation; this equation represents the entropy of a complex system via the partial entropies of the subsystems involved, and includes two principal parts. The first part is linear (additive) and leads to the conventional, Boltzmann, definition of entropy as the logarithm of the statistical weight of the system. The second part is multiplicative and contains all sorts of multilinear products of the partial entropies; inclusion of the multiplicative terms is shown to reproduce the generalized entropy exactly in the Tsallis sense. We speculate that the physical background for considering the multiplicative terms is the role of the long-range correlations supporting the "macroscopic" ordering phenomena (e.g., formation of the "coarse-grained" correlated patterns). We prove that the canonical distribution corresponding to the Tsallis definition of entropy, coincides with the so-called "kappa" redistribution which appears in many physical realizations. This has led us to associate the origin of the "kappa" distributions with the "macroscopic" ordering ("coarse-graining") of the system. Our results indicate that an application of the formalism based on the Tsallis notion of entropy might actually have sense only for the systems whose statistical weights, Ω, are relatively small. (For the "coarse-grained" systems, the weight \\omega could be interpreted as the number of the "grains".) For large Ω (i.e., Ω -> ∞), the standard statistical mechanical formalism is advocated, which implies the conventional, Boltzmann definition of entropy as ln Ω.

Placer Deposits of Mongolia

SEG Discovery ◽  
1996 ◽  
pp. 1-14
Author(s):  
G. JAMSRANDORJ ◽  
SERGUEI A. DIATCHKOV
Keyword(s):  
North America ◽  
Source Rock ◽  
North American ◽  
Classification Schemes ◽  
Geological Institute ◽  
Placer Deposits ◽  
Definition Of

Editor’s note: Smimov uses the weathering definition of eluvial, meaning “an accumulation of rock debris produced*in-place by decomposition or disintegration of rock; a residue.” Two other terms in Smimov’s classification are not in common usage in North America nor in North American placer classification schemes By Russian definition, diluvium is an accumulation of fragments on the surface of slopes close to the source rock, predominantly moved by gravity. In North America, proluvium is a “complex, friable deltaic sediment accumulated at the fool of a slope as a result of an occasional torrential washing of fragmental material” (Glossary of Geology, 1972, American Geological Institute, Washington, D.C.).

scholarly journals Undrained Cyclic Laboratory Behavior of Sandy Soils

Geosciences ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 512 ◽  
Author(s):  
Francesco Castelli ◽  
Antonio Cavallaro ◽  
Salvatore Grasso ◽  
Valentina Lentini
Keyword(s):  
Cyclic Loading ◽  
Seismic Retrofitting ◽  
Coarse Grained ◽  
Triaxial Tests ◽  
Cyclic Triaxial ◽  
Cyclic Triaxial Tests ◽  
Residual Performance ◽  
Definition Of

The complex cyclic shear stress path experienced by the soil during an earthquake, which could also induce liquefaction phenomena, can be approximated in the laboratory only by using sophisticated testing apparatuses. Cyclic triaxial tests have been widely used, especially for coarse grained soils, as in this study. In the framework of the design for the seismic retrofitting of the ‘‘Ritiro viaduct’’ foundations along the A20 motorway connecting Messina with Palermo (Italy), a soil liquefaction study was also carried out. With this aim, a detailed geological and geotechnical characterization of the area was performed by in situ and laboratory tests, including seismic dilatometer Marchetti tests (SDMTs), the combined resonant column (RCT) and cyclic loading torsional shear tests (CLTSTs), and undrained cyclic loading triaxial tests (CLTxTs). In particular, the paper presents the results of cyclic triaxial tests carried out on isotropically consolidated specimens of a sandy soil. The seismic retrofitting works include the reinforcement of the foundation and replacement of the decks with newly designed type and structural schemes, mixed steel, and concrete with continuous girder. During the investigation, data were acquired for the characterization of materials, for the definition of degradation phenomena with the relative identification of possible causes, and for the estimation of the residual performance characteristics of the building. The structural campaign of investigations necessary to determine all of the key parameters useful for a correct definition of the residual performance capabilities of the work was divided into two phases: One in situ and one in the laboratory.

Lithostratigraphy and deep-water setting of the upper Nanaimo Group (Upper Cretaceous), outer Gulf Islands of southwestern British Columbia

1992 ◽  
Vol 29 (3) ◽  
pp. 574-595 ◽  
Author(s):  
T. D. J. England ◽  
R. N. Hiscott
Keyword(s):  
Large Scale ◽  
Upper Cretaceous ◽  
Coarse Grained ◽  
The West ◽  
Strait Of Georgia ◽  
Gravity Flows ◽  
Lithostratigraphic Units ◽  
Local Relief ◽  
Definition Of ◽  
Sand And Gravel

The Upper Cretaceous Nanaimo Group consists of extensive shaly units and lenticular bodies of sandstone and conglomerate deposited in neritic to bathyal marine paleoenvironments. Single sandstone and conglomerate lenses cannot be traced throughout the basin, but instead tend to concentrate at particular stratigraphic levels, defining crudely sheet-like composite units of coarse-grained rocks. Many of the lenticular coarse-grained units rest in major channels, as deep as about 550 m. Sand and gravel were generally transported to the west and northwest by sediment gravity flows through these channels into the basin centre. Recognition of widespread channeling is critical to the definition of formal lithostratigraphic units (four formations and two informal members are defined here for the upper Nanaimo Group).The top of the Nanaimo Group is probably truncated by a major unconformity with local relief of at least 2 km. The effect of the unconformity can only be seen by mapping the orientation of offshore ridges in the Strait of Georgia, which can be traced into the sandstones and conglomerates above the inferred unconformity on Tumbo and Cabbage islands. Large scale cross-bedding, unidirectional paleocurrents, and lack of evidence for marine conditions favour a subaerial, fluvial setting for deposition of these rocks, which correlate to the lithologically similar Paleogene Chuckanut Formation on the Sucia Islands.

NON-SPHERICAL VOIDS: THE BEST ALTERNATIVE TO DARK ENERGY?

2011 ◽  
Vol 20 (supp01) ◽  
pp. 94-101
Author(s):  
ROBERTO A SUSSMAN
Keyword(s):  
Dark Energy ◽  
Degrees Of Freedom ◽  
Large Scale ◽  
Observation Point ◽  
Coarse Grained ◽  
Spherical Void ◽  
Cosmological Observations ◽  
Definition Of ◽  
Almost All ◽  
Spherical Voids

If our cosmic location lies within a large-scale under–dense region or "void", then current cosmological observations can be explained without resorting to a cosmological constant or to an exotic and elusive source like "dark energy". If we further assume this void region to be spherical (as almost all current void models do), then fitting observational data severely constrains our position to be very near the void center, which is a very special and unlikely observation point. We argue in this article that existing spherical void models must be regarded as gross approximations that arise by smoothing out more realistic non–spherical configurations that may fit observations without the limitations imposed by spherical symmetry. In particular, the class of quasi–spherical Szekeres models provides sufficient degrees of freedom to describe the evolution of non–spherical inhomogeneities, including a configuration consisting of several elongated supercluster–like overdense filaments with large underdense regions between them. We summarize a recently published example of such configuration, showing that it yields a reasonable coarse-grained description of realistic observed structures. While the density distribution is not spherically symmetric, its proper volume average yields a spherical density void profile of 250 Mpc that roughly agrees with observations. Also, once we consider our location to lie within a non-spherical void, the definition of a "center" location becomes more nuanced, and thus the constraints placed by the fitting of observations on our position with respect to this location become less restrictive.

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