The Role of Hydrogen In The Structure of γ-Alumina

1998 ◽  
Vol 549 ◽  
Author(s):  
Karl Sohlberg ◽  
Stephen J. Pennycook ◽  
Sokrates T. Pantelides

AbstractThe structure of a-alumina (α-A12O3) is well known to be hexagonal close packed. In contrast, the structures of the so-called transition aluminas (-γ-alumina, η-alumina,…) are the subject of controversy. We report theoretical calculations which show that -γ-alumina is actually a sequence of compounds with the general formula H3mAl2−mO3. (0 ≤ m ≤ ⅓). m = ⅛ is a unique form, HAl5O8, with a perfect spinel structure. For m > 8, there are interstitial H atoms whereas for m < ⅛. there are vacancies. This picture is supported m > ⅛ by calculations of material density and proton vibrational frequencies. The results are in excellent agreement with measured values. The present new systematic approach accounts for a wide range of seemingly contradictory data and leads to the conclusion that γ-alumina behaves as a “reactive sponge” by storing and releasing water in a novel reactive way.

1970 ◽  
Vol 4 (2) ◽  
pp. 121-148
Author(s):  
ZS Ebigbagha

Colour studies have generated much confusion in art and design education, particularly among students of the discipline in Nigeria. This is due to the complexity of the subject matter itself, wide-range of available materials and a variety of concepts developed in its multi-disciplinarity that is not kept distinct. Therefore, this paper utilizes a qualitative approach that employs the critical, historical, and analytic examination to provide clarification on the constructive and expressive aspects of colour studies. The paper introduces the reader to the pivotal role of colour and its multi-disciplinary interest. Also, it adequately clarifies paradigms and theories in the physical, psychophysical and psychological domains with particular emphasis on areas of practical value to art and design. Moreover, it considers the numeric adaptation of the colour wheel to a set of numbers for harmonic relationship. And it ends with the need for artists and designers to comprehensively grasp the contextual behaviour of colour and develop colour originality through creative construction and effective use in order to successfully express themselves in colour.


2016 ◽  
Vol 6 ◽  
pp. 33-62
Author(s):  
Wiktoria Kudela-Świątek

The article discusses a wide range of aspects concerning the Holomodor – the Great Famine in the Soviet Union in the years 1932–1933. The author focuses on examining the processes of creating a collective image of the Great Famine and the role of individual memory of its survivors in building this image. Analyzing the memories of the survivors the author deals with distortions and myths which has grown up around the Holomodor. The significance of this disaster for the Ukrainian identity is also the subject of the analysis.


Author(s):  
M. Zaman ◽  
B.F. Quin

The commercial introduction of reactive phosphate rock (RPR) to the New Zealand market in 1987 was the subject of much dispute regarding its efficacy, and the differing interpretations of field trial results. Twenty-five years on, it was considered time to seek the views of farmers who are long-term users of RPR, across a wide range of geographic, soil type, fertility, climate and farming operations. The fact that the farmers interviewed have all been farming successfully with RPR for many years enables conditions suitable for RPR use to be identified more clearly compared to earlier advice. This progress is discussed in the context of utilising the proven reduced phosphorus (P) run-off with RPR to reduce P eutrophication in P-sensitive catchments. Key words: Reactive phosphate rock, RPR, superphosphate, SSP, long-term use, phosphorus runoff, eutrophication, water quality, recommendations


Author(s):  
Olha Petrenko

The article deals with the role of musical images in the poetry of Dmitry Kremen. The subject of study is the music code, which is present in many works of the poet. Musical signs, symbols, links play a significant role in vocabulary, phraseology and other ways of poetic expressiveness. Familiarity with the subject world of D. Kremin's poetic texts includes a wide range of concepts related to the world of sounds. The additional accents of a musical-conceptual thesaurus arise when musical cues form certain speech turns that acquire the meaning of metaphors. Musical signs in the lyrics of Dmitry Kremin imply awareness of a wide range of sound associations, which the poet interprets from the standpoint of his own value attitude to them. Beethoven, Chopin, Mozart are the names-symbols of the world music culture, which occupy a significant place in the thesaurus of Dmitry Kremin's poetic texts. Behind these subject designations lies the vast world of artistic and figurative generalization and lyrical and philosophical reflections that are gaining coded meaning. Familiarity with the poetry of Dmitry Kremin proves that the leitmotif of many of his texts is the image of a violin, which acquires different semantic shades. Thus, in Beethoven's poetry, the poet emphasizes the value of music as a special language, devoid of words, but empowered to embody emotional and semantic richness, and therefore capable of being the language of angels. Music code the poetry of Dmitry Kremen is a multidimensional system in which the concept of "music" acts as a concept as a set of meaningful characters and their semantic meanings. In the process of decoding Dmitry Kremin's poetry, one can discover the deep semantic loads of the musical code, on the one hand – as the embodiment of the categories of high, sublime, valuable and eternal in the human sense, on the other – as a symbol of the extra-material, mystical, language of which the angels speak. Decoding the poet's texts is the process of extracting recognition codes and perception codes. The codes of perception in the poetry of Dmitry Kremenya are meaningful loads of texts, its semantic components, which highlight the deep meanings of texts. Through the musical code, the poet embodies the content of the categories of the sublime and the beautiful. The music code shows the understanding of poetry of Dmitry Kremenin a deeply metaphorical sense.


Author(s):  
С.М. Кузин ◽  
Н.В. Чебышев ◽  
Д.В. Богомолов ◽  
И.А. Беречикидзе ◽  
Т.В. Сахарова ◽  
...  

Развитие генетики оказывает все большее влияние на современную медицину. На основе достижений в области структурной, функциональной геномики и эпигенетики сформировались новые наиболее перспективные направления - таргетная терапия, персонализированная и регенеративная медицина. Появились принципиально новые возможности для диагностики, прогнозирования, профилактики и лечения широкого спектра заболеваний. Все возрастающая роль генетики предъявляет принципиально иные требования к ее преподаванию в медицинских ВУЗах с использованием новых педагогических методик. Простого увеличения количества часов в рамках предмета «Биология» уже недостаточно для подготовки специалистов, чья профессиональная деятельность напрямую связана с генетикой: онкологов, вирусологов, иммунологов и многих других. The development of genetics has an increasing influence on modern medicine. Based on the achievements in the field of structural, functional genomics and epigenetics, new most promising directions have been formed - targeted therapy, personalized and regenerative medicine. There are fundamentally new opportunities for the diagnosis, prediction, prevention and treatment of a wide range of diseases. The increasing role of genetics imposes fundamentally different requirements for its teaching in medical Schools using new pedagogical methods. Simply increasing the number of academic hours in the subject “Biology” is no longer enough to train specialists whose professional activities are directly related to genetics: oncologists, virologists, immunologists, and many others.


Author(s):  
O. Moroz ◽  
V. Kotkevych

Problem setting. National identity is a multidimensional, complex phenomenon in which political and cultural (ethnic) factors combine and interact in some way. The question of their relationship, interaction and share in the formation of national communities has been the subject of long-standing debate . In Ukraine in a wide public space the ethnic paradigm of the nation dominates, according to which the phenomenon of the nation is maximally identified with the ethnos politically organized in its state. In academic circles, there is a much more complex vision of the essence of the nation. However, in the context of the problem of further development of Ukrainian national identity and national consolidation of Ukrainians, many authors focus primarily on the importance of the cultural factor. But, the importance of political factors of national consolidation is markedly underestimated. In particular, the question of the role of institutions of representative democracy and democratic political culture in the process of strengthening the current Ukrainian national identity, the difficulties and opportunities associated with them, is on the margins. Recent research and publications analysis. In Ukraine, a wide range of different aspects of the formation of modern Ukrainian national identity has been the subject of coverage in the monographs of M. Stepyko, M. Rozumny, articles by N. Pidberezhnyk, D. Kravchenko, O. Shaparenko, and other researchers. In the context of the analysis of the problem of national consolidation of Ukraine, A. Kolodiy presented her vision of the essence of the phenomenon of nation and national identity. In the collective monograph of scientists of the Institute of State and Law named after V. Koretsky presents an analysis of the specifics of the identity of the population of certain regions of Ukraine, proposals for effective mechanisms for its integration into the Ukrainian common national identity. Distinctive narratives of national identity that exist in Ukraine have been the subject of research by American political scientist K. Korostelina. British / Ukrainian researcher T. Kuzio addressed the problem of the interaction of different identity options and democratization processes in Ukraine in the post-Soviet period. In their reflections, these authors offered, in particular, the different visions of the share of political, ethnic and cultural components of national identity, the dynamics of their interaction in the process of national formation of modern Ukraine. Of particular note are the publications of Yu. Ruban, who pointed out, also in the Ukrainian context, the close interdependence between democratic institutions and national identity.Highlighting previously unsettled parts of the general problem. The relationship between the processes of formation of modern Ukrainian national identity and democratic values as its important and necessary component, democratic institutions, in particular, electoral and potential ways of national consolidation of Ukrainian citizens, needs to be studied in more detail.The purpose of the article is to determine the place and role of institutions of representative democracy in the processes of formation of Ukrainian national identity, in particular, taking into account current political changes, identifying related challenges and opportunities.Paper main body. For almost three decades of Ukraine’s independent state existence, its political development has taken place within the framework of democratic political institutions and has been carried out through the mechanisms of representative democracy. In the process of state/national development of Ukraine, the formation of its current national identity, the basic institutional components of democratic political procedures have proved to be a mandatory and permanent factor.  In the process of interaction between the government and society, its starting point is the legitimation of power in the eyes of citizens. Citizens’ perception of state power as legitimate appears to be in some way connected with the process of asserting national identity in its political dimension. It is democratic procedures in a pluralistic society that become the basis of the legitimacy of power.The central element of the democratic legitimization of power and one of the most important components of communication between government and society is elections, which in this aspect are essentially a factor in the formation of national identity. In the course of the electoral process, numerous group and individual identities that exist in society, in a certain way, manifest themselves in public space, in open and defined by certain rules rivalry with others.The common national idea / ideology and democratic principles of political coexistence are interrelated factors, because the formation of a common identity through dialogue, through the integration of human rights, political and civil liberties into the whole multidimensional construction of national identity can be a factor in consolidating society. Encouraging the integration of linguistic, ethnic and other minorities into the social and political space of a single state on the basis of interculturalism will thus contribute to the formation of a common civic identity in people with different (but at the same time in no way isolated from each other) cultural identities. Citizens’ perceptions of the state as an institution that takes into account their interests and values, a greater level of civic participation in decision-making and implementation will ultimately mean greater efficiency of democratic governance, thus contributing to socio-economic progress and stability of the entire socio-political system.  Conclusions of the research and prospects for further studies. The task of forming an image of national identity capable of integrating around itself, around the Ukrainian core, the achievements and values of various ethnic, linguistic and cultural minorities, politically united by the borders of the Ukrainian state, remains relevant. In this context, democratic institutions and values, forming the basis for constructive public articulation of different points of view and interests, have the potential to promote more effective government and intergroup communication, reduce conflict in society, feelings of alienation between government and certain groups.  Further prospects for research in this area are a more detailed analysis of the relationship between the democratic mechanisms of public communication and the peculiarities of the formation of the current Ukrainian national identity and national consolidation. In particular, in this context, the appropriate influence of the specifics of electoral procedures and processes, different forms of government needs to be considered separately.


ECONOMICS ◽  
2016 ◽  
Vol 4 (1) ◽  
pp. 89-106 ◽  
Author(s):  
Miodrag Bandur

Summary Small and middle enterprises (SME) are becoming more and more the subject of interest in developed countries in which small and middle companies represent a factor of development. The developed countries of the word put SME into focus of their economic strategies and programs and- by concrete macro-economic measures- the aimed politics to SME has a direct impact to reduction on business costs and improvement of liquidation (thus, competitive position of SME), through tax bonds. However, BiH still does not develop tax politics and praxis of many developed countries, which causes a lack of attention and improvement of the sector of SME. This is what many research in BiH confirmed. The changes in social-economic system based on the market commerce create suitable conditions for development of various activities which should be profitable and keep up with the development, with continuous adaptation to constant changes on market, which gives the advantage to SME or, so called, small business. Such companies most often represent the collision of ownership, management and risk, so the knowledge and skill needed for successful management include a very wide range.


2020 ◽  
pp. 105-122
Author(s):  
David Baumeister

This chapter provides an overview of Kant’s conception of the animality (or Tierheit) of human beings. Though human animality is treated in a wide range of Kant’s writings, it has received relatively little attention from scholars, perhaps because Kant wrote no text principally devoted to the subject. With the aim of establishing its systematic unity, I track the status and role of animality across three distinct but interrelated domains of Kant’s theory of human nature—his account of animality as one of three basically good original human predispositions in Religion Within the Boundaries of Mere Reason, his account of animality as the target of discipline in the pedagogy lectures, and his account of animality as simultaneously a driver of and hindrance to the progress of history in ‘Idea for a Universal History With a Cosmopolitan Aim’. I argue that these accounts, taken together and in light of the teleological vision of human development that connects them, manifest a distinctively Kantian vision of the human as an actively rational, but at the same time ineliminably animal, being. Far from denying that humans are animals or seeking to repress human animality wholesale, Kant in fact offers a nuanced and robust, though still problematic, defence of the necessity, innocence, and originality of the human’s animal side.


2018 ◽  
Vol 4 (1) ◽  
pp. 1-10
Author(s):  
Aleksander Samek

The article highlights the possibility of joint impacts of probation officers of both divisions (family and criminal) performing tasks in one family. The above issue was analyzed in three aspects: historical, organizational, legal and methodological. Conclusions that arise after analysis lead to believe that the guardianship system has developed in several directions, and the role of probation officers is currently differently understood by judges, probation officers and the society. Probation officers perform a very wide range of tasks related to the implementation of court decisions. Their preparation for the profession has been standardized. Graduates of pedagogical, psychological, sociological and legal faculties may become probation officers. Year-long apprenticeship is aimed at deepening the knowledge of the future probation officer in the field of work methodology. The author believes that the issue of cooperation of probation officers performing tasks in one family should become the subject of in-depth analysis, both legal and methodological. Well-prepared and implemented cooperation between probation officers of both divisions can bring a measurable increase in effectiveness of rehabilitation-educational actions carried out in an open environment.


Author(s):  
Aaron S. Gross

What do animals have to do with religion? This article answers this broad question with special attention to issues related to animal ethics and animal philosophy. Topics covered include the religious dimension of human-animal relationships; the role of animals in human self-imagination; the formation of religions based on human-animal relationships, especially in responding to the dilemmas and tensions raised by killing animals for food and sacrifice; and central issues in the method and theory of critically studying animals and religion. Working at the intersection of the history of religions and animal studies, this essay provides grounding in the subfield of “animals and religion,” as well as references to a wide range of work on the study of animals. The article also cites studies of the subject in both the religions of traditional peoples, including the Cree, Koyukon, Naxi, Nivkhi, and Tuvan, and the so-called world religions, including Jewish, Christian, and Islamic traditions; Hindu, Jain, and Buddhist traditions; and Daoist traditions.


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