scholarly journals Mineral composition and gemological characteristics of jewelry-ornamental ammonites of the Republic of Adygea

2019 ◽  
pp. 32-38
Author(s):  
D. A. Petrochenkov
Keyword(s):  
Mineral Composition ◽  
Lower Cretaceous ◽  
Structural Features ◽  
Time Data ◽  
Mineral Inclusions ◽  
Technological Characteristics ◽  
Wide Range ◽  
The Republic ◽  
First Time

For the first time, data on the mineral composition and gemological characteristics of the jewelry-ornamental ammonites of the Republic of Adygea have been presented. Ammonites consist mainly of the calcite with inclusions of quartz, glauconite, kaolinite, aragonite, pyrite, apatite and hematite. The walls and partitions of the shells mainly lost the original aragonite composition and consist of calcite with inclusions of pyrite and apatite. Aragonite is preserved fragmentary in the walls and partitions of the shells. Calcite contains some elements-admixture, which average volumes, (wt. %), are: Mg0,62, Mn0,31 and Fe 1,26. The color and transparency of calcite is determined by the structural features of the crystals and mineral inclusions. Ammonites of the Republic of Adygea have a wide range of sizes and are associated with sediments of the lower Cretaceous. According to the decorative and technological characteristics ammonites can be used as a jewelry-ornamental material for the production of a wide range of ware.

scholarly journals Inter-individual differences in human brain structure and morphology link to variation in demographics and behavior

eLife ◽  
2019 ◽  
Vol 8 ◽  
Author(s):  
Alberto Llera ◽  
Thomas Wolfers ◽  
Peter Mulders ◽  
Christian F Beckmann
Keyword(s):  
Individual Differences ◽  
Brain Function ◽  
Structural Features ◽  
Structural Variations ◽  
Healthy Human ◽  
Negative Spectrum ◽  
Human Volunteers ◽  
Wide Range ◽  
And Behavior ◽  
First Time

We perform a comprehensive integrative analysis of multiple structural MR-based brain features and find for the first-time strong evidence relating inter-individual brain structural variations to a wide range of demographic and behavioral variates across a large cohort of young healthy human volunteers. Our analyses reveal that a robust ‘positive-negative’ spectrum of behavioral and demographic variates, recently associated to covariation in brain function, can already be identified using only structural features, highlighting the importance of careful integration of structural features in any analysis of inter-individual differences in functional connectivity and downstream associations with behavioral/demographic variates.

scholarly journals Ti-clinohumite in the Ciénaga skarn-type mineralogy, Sierra Nevada de Santa Marta Massif (Colombia): Occurrence and petrologic significance

2015 ◽  
Vol 19 (1) ◽  
pp. 15-30
Author(s):  
Carlos Alberto Ríos ◽  
Óscar Mauricio Castellanos ◽  
Carlos Alberto Chacón
Keyword(s):  
Mineral Composition ◽  
Sierra Nevada ◽  
Lower Cretaceous ◽  
Metamorphic History ◽  
First Time ◽  
Cretácico Inferior

<p>This study reports the occurrence and petrologic significance of Ti-clinohumite for the first time in the Ciénaga skarn, Sierra Nevada de Santa Marta Massif. Ti-Clinohumite occurs as thin bands hosted in the Ciénaga Marbles of lower Cretaceous age, which consist of quartz-wollastonite-diopside-garnet-clinohumite marbles. We focus the attention on the occurrence of Ti-clinohumite-bearing domains, highlighting some interesting textures as well as the mineralogy and chemistry of the Ti-clinohumite. On the basis of its geologic situation, petrography, mineral composition and metamorphic history, we discuss the origin of Ti-clinohumite.</p><p> </p><p><strong>Resumen</strong></p><p>El estudio reporta la presencia y el significado petrológico de Ti-clinohumita por primera vez en mármoles del depósito de skarn de Ciénaga, Macizo Sierra Nevada de Santa Marta, de edad Cretácico inferior. La Ti-clinohumita ocurre como bandas delgadas en mármoles de cuarzo-wollastonita-diópsido-granateclinohumita. Centramos la atención en la ocurrencia de los dominios con Ti-clinohumita, destacando algunas de sus texturas interesantes, así como la mineralogía y la química de la Ti-clinohumita. Con base al contexto geológico, a las características petrográficas, a la composición mineral y a la historia metamórfica, se discute el origen de la Ti-clinohumita.</p>

scholarly journals Evaluating the Effect of Visitor Presence on Nile Crocodile (Crocodylus niloticus) Behavior

2021 ◽  
Vol 2 (1) ◽  
pp. 115-129
Author(s):  
Alex Riley ◽  
Megan Terry ◽  
Hani Freeman ◽  
Andrew C. Alba ◽  
Joseph Soltis ◽  
...  
Keyword(s):  
Environmental Variables ◽  
Taxonomic Diversity ◽  
Time Of Day ◽  
Operating Conditions ◽  
Time Data ◽  
Animal Kingdom ◽  
Normal Operating ◽  
Wide Range ◽  
Nile Crocodile ◽  
First Time

Visitor presence has been shown to affect the behavior of animals in zoos. However, studies to date have not included a wide range of taxonomic groupings, and thus, the effect is poorly understood for many species. Here, we compared the behavior of Nile crocodiles (Crocodylus niloticus) in the presence and absence of visitors for the first time. Data were collected at Disney’s Animal Kingdom® over two months during normal operating conditions and during the same two months the following year when the park was closed due to the COVID-19 pandemic, totaling 158 observation hours. Significant differences in crocodile behavior were observed between park operating conditions; however, the direction of change varied by behavior and average differences were generally small. In addition, we found that time of day, temperature and month significantly affected behavior, often with greater magnitude than visitor presence. This highlights the importance of accounting for environmental variables when evaluating and interpreting the behavior, and ultimately welfare, of reptiles in zoos. Collectively, the data suggest the overall effect of visitors on crocodile behavior was small and neutral from a welfare perspective. This study highlights the importance of taxonomic diversity in studying the visitor effect.

scholarly journals Mineral composition and gemological characteristics of the petrified wood of the Ulyanovsk region

2019 ◽  
pp. 18-23
Author(s):  
D. A. Petrochenkov
Keyword(s):  
Organic Matter ◽  
Mineral Composition ◽  
Lower Cretaceous ◽  
Amorphous Substance ◽  
X Ray ◽  
Petrified Wood ◽  
Ulyanovsk Region ◽  
First Time ◽  
Cretaceous Deposits

For the first time, the mineral composition and gemological characteristics of the petrified wood from the Ulyanovsk region, of jewelry and ornamental quality, have been studied. The petrified wood is associated with the Lower Cretaceous deposits and consists mainly of calcite (up to 73 mass. %); pyrite, apatite, gypsum are present; dolomite, anhydrite, hematite, pyrolusite, organic matter and X-ray amorphous substance have been fixed. According to the technological and decorative characteristics, the petrified wood of the Ulyanovsk region is a quality jewelry and ornamental material of the florogenic group.

scholarly journals Using deliberation to address controversial issues: Developing Holocaust education curriculum for Latvian schools

2007 ◽  
Vol 2 (8) ◽  
Author(s):  
Thomas Misco
Keyword(s):  
Teaching And Learning ◽  
Structural Features ◽  
Cross Cultural ◽  
Controversial Issues ◽  
Education Curriculum ◽  
Educational Materials ◽  
Holocaust Education ◽  
Wide Range ◽  
The Republic ◽  
Curriculum Deliberation

This paper explores how a cross-cultural project responded to the need for new Holocaust educational materials for the Republic of Latvia through the method of curriculum deliberation. Analysis of interview, observational, and document data drawn from seven curriculum writers and numerous project members suggest that curriculum deliberation helped awaken a controversial and silenced history while attending to a wide range of needs and concerns for a variety of stakeholders. The findings highlight structural features that empowered the curriculum writers as they engaged in protracted rumination, reflected upon competing norms, and considered the nuances of the curriculum problem in relation to implementation. Understanding the process, challenges, and promises of cross-cultural curriculum deliberation holds significance for educators, curricularists, and educational researchers wishing to advance teaching and learning within silenced histories and controversial issues.

scholarly journals Manifestation of Azerbaijani Music Elements in Ilham Nazarov’s Performance Technique as a Countertenor

2021 ◽  
Vol 4 (1) ◽  
pp. 152-166
Author(s):  
Osman Ozel
Keyword(s):  
Vocal Folds ◽  
Vocal Performance ◽  
Musical Culture ◽  
Performance Technique ◽  
Wide Range ◽  
National Music ◽  
The Republic ◽  
Vocal Art ◽  
First Time ◽  
The Voice

The article is devoted to the study of the features of the vocal performance of the Honored Artist of the Republic of Azerbaijan Ilham Nazarov, who entered the history of Azerbaijani musical culture as the first performer with a countertenor timbre of voice. At the same time, the singer's uniqueness in vocal art lies in the fact that he has a wide range, as well as various vocal timbres, which determines the use of various performing techniques. The purpose of the research is to determine the features of Ilham Nazarov’s vocal performance technique as a countertenor and the influence of elements inherent in Azerbaijani music on his performance technique. The research methodology is based on the use of methods of music-analytical, historical, theoretical analysis, as well as physiological analysis of voice. In the article, the characteristics of the performer’s voice are also presented with documents, which are confirmed through laboratory tests. The methods and principles of the approach used in the framework of the research are aimed at studying the features of the musician’s voice and studying the characteristic elements of Azerbaijani music in its performance technique. The scientific novelty of the research is that the influence of Azerbaijani music on the performance of the Honored Artist of the Republic of Azerbaijan Ilham Nazarov is being investigated for the first time. At the same time, the author explains the place and importance of the musician’s work in the art of vocal performance in Azerbaijan. I. Nazarov is the first performer with a countertenor voice timbre in the art of vocal performance in Azerbaijan. Voicing samples of national music with such a timbre of the voice itself requires a technique of distinctive performance. In this respect, the structure of the musician's performance is a process based on a complex technique. These features have been first studied and investigated on a scientific basis. Conclusions.  Based on the study of the features of I. Nazarov’s performance, the following may be concluded: I. Nazarov is a vivid example of the art of vocal performance in Azerbaijan. The features of the voice turn the performer into a unique phenomenon in the musical culture of Azerbaijan. The study focuses on the physiological features of the musician’s voice and presents the size of the vocal folds for the first time. This explains the volume of the broadband of the performer’s voice, as well as the reason for his performance by both the bass and countertenor timbre of the voice. The countertenor timbre of the voice has a distinct technique of performance. Performers having such a timbre of voice mostly refer to the composers’ works of the Baroque period. Voicing the national music of Azerbaijan with a countertenor voice timbre in itself means the combination of two different performance techniques. Thus, in his work, the performer successfully combined the technique of countertenor performance with the  features of the original performance of Azerbaijani mugham. As a result, the musician was successful in forming a unique, original style of performance.

The Sayan borderlands: Tuva’s ethnocultural landscapes in changing natural and sociocultural environments

2020 ◽  
Vol 13 (1) ◽  
pp. 29-36
Author(s):  
D. A. Dirin ◽  
Paul Fryer
Keyword(s):  
Cultural Landscapes ◽  
Field Studies ◽  
Social Environments ◽  
Key Factors ◽  
Role Of Government ◽  
Literary Sources ◽  
Population Migrations ◽  
The Republic ◽  
Sociocultural Processes ◽  
First Time

The paper is devoted to ethno-cultural landscapes of the Republic of Tuva. Ethnocultural landscapes (ECLs) are specific socio-environmental systems that developed as a result of the interaction of ethnic groups with their natural and social environments and are in a constant process of transformation. An attempt is made to identify the mechanisms of the formation, functioning and dynamics of ethnocultural landscapes in the specific conditions of the intracontinental cross-border mountain region, as well as to establish the main factors-catalysts of their modern changes. For the first time an attempt is made to delimit and map the ethnocultural landscapes of Tuva. For this, literary sources, statistical data and thematic maps of different times are analyzed using geoinformation methods. The results of 2014-2018 field studies are also used, during which interviews with representatives of different ethno-territorial, gender, age and social groups were taken. It is revealed that the key factors of Tuva’s ethnocultural landscape genesis are the natural isolation of its territory; the features of its landscape structure; the role of government; population migrations from other regions and the cultural diffusion provoked by them. 13 ethnocultural landscapes are identified at the regional level. Their modern transformation is determined by the shift of climatic cycles, aridisation, globalisation of sociocultural processes, changes in economic specialisation and ethnopsychological stereotypes.

The Legal Status of Local Government in South Africa under the New Constitutional Dispensation

2018 ◽  
Vol 33 (2) ◽  
Author(s):  
Mbuzeni Mathenjwa
Keyword(s):  
South Africa ◽  
Local Government ◽  
Legal Status ◽  
Case Law ◽  
The Status ◽  
History Of ◽  
The Republic ◽  
First Time

The history of local government in South Africa dates back to a time during the formation of the Union of South Africa in 1910. With regard to the status of local government, the Union of South Africa Act placed local government under the jurisdiction of the provinces. The status of local government was not changed by the formation of the Republic of South Africa in 1961 because local government was placed under the further jurisdiction of the provinces. Local government was enshrined in the Constitution of the Republic of South Africa arguably for the first time in 1993. Under the interim Constitution local government was rendered autonomous and empowered to regulate its affairs. Local government was further enshrined in the final Constitution of 1996, which commenced on 4 February 1997. The Constitution refers to local government together with the national and provincial governments as spheres of government which are distinctive, interdependent and interrelated. This article discusses the autonomy of local government under the 1996 Constitution. This it does by analysing case law on the evolution of the status of local government. The discussion on the powers and functions of local government explains the scheme by which government powers are allocated, where the 1996 Constitution distributes powers to the different spheres of government. Finally, a conclusion is drawn on the legal status of local government within the new constitutional dispensation.

The revision of lichens, lichenicolous and non-lichenized fungi from the Vodlozersky National Park (Republic of Karelia, Russia) in the Herbarium of the Botanical Museum, University of Helsinki

2019 ◽  
Vol 53 (2) ◽  
pp. 337-348
Author(s):  
V. N. Tarasova ◽  
T. Ahti ◽  
O. Vitikainen ◽  
A. V. Sonina ◽  
L. Myllys
Keyword(s):  
National Park ◽  
Common Species ◽  
Lichenized Fungi ◽  
Herbarium Specimens ◽  
Lichenicolous Fungi ◽  
Biogeographic Province ◽  
Botanical Museum ◽  
The Republic ◽  
First Time ◽  
Lichen Flora

This is a report of a revision of 565 herbarium specimens of lichens, lichenicolous or non-lichenized fungi and additional locality records of common species produced from a visit of the Russian-Finnish expedition to Vodlozersky National Park right after its foundation in 1991. The analyzed collection and field records represent the earliest information about the lichen flora of the territory of the park. In total, 177 species are listed including 173 lichens, 3 non-lichenized and 1 lichenicolous fungi. Xylographa rubescens is new to the Republic of Karelia. Twenty two species are reported for the first time for biogeographic province Karelia transonegensis; 47 species for the Karelian part of Vodlozersky National Park; and 17 species for the whole territory of the park.

Some new and interesting mosses (Bryophyta) from Republic of North Ossetia — Alania

2015 ◽  
Vol 49 ◽  
pp. 322-327
Author(s):  
G. Ya. Doroshina ◽  
I. A. Nikolajev ◽  
Yu. V. Lavrinenko
Keyword(s):  
Rare Species ◽  
The Republic ◽  
First Time ◽  
North Ossetia

Fissidens gracilifolius, Leptodontium flexifolium, Lindbergia dagestanica, Tortella bambergeri are recorded for the first time in the Republic of North Osetia — Alania. Rare species for the Republic are discussed: Fabronia ciliaris, F. pusilla, Lindbergia grandiretis, Tortula modica, Weissia wimmeriana, Zygodon rupestris.

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