Relationship of the physical, mechanical and technological properties of binary alloys with qualitative changes in the crystallization intervals

2020 ◽  
pp. 134-144
Author(s):  
А.В. Михайлов ◽  
К.Ю. Шахназаров
Keyword(s):  
Phase Diagram ◽  
Phase Composition ◽  
Concentration Dependence ◽  
Binary Alloys ◽  
Technological Properties ◽  
Relationship Of ◽  
First Time ◽  
Qualitative Changes

На основании анализа литературных данных по физико-механическим и технологическим свойствам двойных сплавов в представленной статье сделана попытка дать представление о диаграмме состояния как о концентрационной зависимости качественных изменений интервалов кристаллизации (перекристаллизации). Это впервые позволяет связать с диаграммой состояния, не поддающиеся объяснению особенностями фазового состава или структуры аномалии физико-механических и технологических свойств используемых промышленно двойных сплавов. Based on the analysis of literature data on the physicomechanical and technological properties of binary alloys, this article attempts to give an idea of the phase diagram as a concentration dependence of qualitative changes in the crystallization (recrystallization) intervals. For the first time, this makes it possible to associate with the phase diagram the anomalies of the physicomechanical and technological properties of the industrially used binary alloys that cannot be explained by the peculiarities of the phase composition or structure.

scholarly journals The relationship between the anomalies of the properties of alloys with a semiconductor component and special features of glass formation and state diagrams

2020 ◽  
pp. 67-77
Author(s):  
K. Yu. Shakhnazarov ◽  
◽  
A. V. Mikhailov ◽  
D. V. Tzykanov ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Diagram ◽  
Glass Formation ◽  
Physical And Mechanical Properties ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
State Diagrams ◽  
First Time ◽  
The Relationship ◽  
Qualitative Changes

The analysis of literature data on the properties of alloys with a semiconductor component shows a significant number of anomalies of physical and mechanical properties left without a comment of the researchers of these alloys. Based on the anomalies in the properties of twelve alloys (Ge–Si, InAs–GaP, GaSb–GaAs, HgTe–CdTe, GaSe–GaS, InSb–AlSb, PbSe–GeTe, Zn–Ge, Ti–Ge, Ge–Tl, ZnTe–HgTe, P–As), the paper attempts to identify a regularity that allows associating these anomalies with state diagrams. For the first time, the authors introduce the concept of phase diagram as a concentration dependence of qualitative changes in crystallization intervals, which allows associating phase diagram with the extremes of physical and mechanical properties of industrially used alloys with a semiconductor component that cannot be explained by the peculiarities of phase composition or structure. The second part of the paper deals with the special aspects of glass formation (amorphization) of multicomponent alloys. Modern literature expresses mutually exclusive judgments about the possibility of using phase equilibrium diagrams to predict the ability to glass-formation, which is well-founded and is probably associated with the absence of a general theory of glass formation. Nevertheless, the analysis of literature data on SiO2–Na2O, Ge–S, GeSe–Se, S–Se alloys shows that the glass formation (amorphization) boundaries are associated with phase diagrams. Based on the identified criterion, the paper shows the possibility of using equilibrium state diagrams built for slow-cooled alloys to predict the glass-forming ability of (fast-cooled) alloys.

ЗУБРЫ НА СЕВЕРЕ РОССИИ — НАСТОЯЩЕЕ И БУДУЩЕЕ

2019 ◽  
pp. 42-44
Author(s):  
I.V. GUSAROV ◽  
V.A. OSTAPENKO ◽  
T.V. NOVIKOVА
Keyword(s):  
Biological Diversity ◽  
Climatic Conditions ◽  
Economic Consequences ◽  
European Bison ◽  
Rare And Endangered Species ◽  
The North ◽  
Rare And Endangered ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

Впервые в мире создана популяция зубров на территории 60 градусов северной широты. В новых климатических условиях разведения и сохранения зубров определены и проанализированы факторы существования вида на севере Европейской части РФ. Выявлены признаки, динамика численности, которые являются составной частью системы, предназначенной для управления биоразнообразием. Интродукция, являясь процессом введения в экосистему нехарактерных для нее видов, может усиливать изменения биоценозов как положительно, так и отрицательно. Насколько быстро и успешно проходит процесс адаптации заселенного вида, и усматривается его влияние на окружающую среду зависит дальнейшее существование зубров и в целом биоразнообразия. В статье обсуждаются вопросы взаимоотношения зубров с другими видами копытных и хозяйственной деятельностью человека, а также дальнейшим использованием зубров в сельскохозяйственном производстве. Пластичность зубров, выявление изменений и их анализ при вселении видов в новые условия обитания необходимы не только для определения развития или деградации биоценозов и в целом экосистемы, но и прогноза социально-экономических последствий интродукции как одного из методов сохранения редких и исчезающих видов фауны.For the first time in the world, a bison population has been created in an area of 60 degrees north latitude. In the new climatic conditions of breeding and preservation of bison, the factors of the species existence in the north of the European part of the Russian Federation are identified and analyzed. The signs, dynamics of abundance, which are an integral part of the system designed to manage biodiversity are identified, since the preservation of biological diversity on the planet is one of the main problems of our time. Introduction, being the process of introducing non-typical species into an ecosystem, can enhance changes in biocenoses, both positively and negatively. The question posing sounds especially when it comes to such a large hoofed animal as the European bison. How quickly and successfully the process of adaptation of the universe takes place and its environmental impact is seen depends on the continued existence of bison and biodiversity in general. The article discusses the relationship of bison with other types of ungulates and human activities, as well as the further use of bison in agricultural production. How these issues will be resolved positively depends on the future of these animals. Thus, the plasticity of bison, the identification of changes and their analysis, with the introduction of species into new habitat conditions is necessary not only to determine the development or degradation of biocenoses and the ecosystem as a whole, but also to predict the socio-economic consequences due to the introduction as one of the methods of preserving rare and endangered species of fauna.

Interaction of Gold Atom with Clusters of Water: Few Computational Mise-En-Scènes with Hydrogen Bonding Motif

2008 ◽  
Vol 73 (11) ◽  
pp. 1457-1474 ◽  
Author(s):  
Eugene S. Kryachko
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Computational Model ◽  
Photoelectron Spectroscopy ◽  
Water Clusters ◽  
Gold Atom ◽  
Proton Acceptor ◽  
Anion Photoelectron Spectroscopy ◽  
Relationship Of ◽  
First Time

The present work outlines the fair relationship of the computational model with the experiments on anion photoelectron spectroscopy for the gold-water complexes [Au(H2O)1≤n≤2]- that is established between the auride anion Au- and water monomer and dimer thanks to the nonconventional hydrogen bond where Au- casts as the nonconventional proton acceptor. This work also extends the computational model to the larger complexes [Au(H2O)3≤n≤5]- where gold considerably thwarts the shape of water clusters and even particularly breaks their conventional hydrogen bonding patterns. The fascinating phenomenon of the lavish proton acceptor character of Au- to form at least six hydrogen bonds with molecules of water is computationally unveiled in the present work for the first time.

The Only Wonderful Things

2020 ◽  
Author(s):  
Melissa J. Homestead
Keyword(s):  
Twentieth Century ◽  
American Southwest ◽  
Advertising Agency ◽  
Greenwich Village ◽  
Early Twentieth Century ◽  
Park Avenue ◽  
Fresh Perspective ◽  
The Cold War ◽  
Relationship Of ◽  
First Time

This book tells for the first time the story of the central relationship of novelist Willa Cather’s life, her nearly forty-year partnership with Edith Lewis. Cather has been described as a distinguished artist who turned her back on the crass commercialism of the early twentieth century and as a deeply private woman who strove to hide her sexuality, and Lewis has often been identified as her secretary. However, Lewis was a successful professional woman who edited popular magazines and wrote advertising copy at a major advertising agency and who, behind the scenes, edited Cather’s fiction. Recognizing Lewis’s role in Cather’s creative process changes how we understand Cather as an artist, while recovering their domestic partnership (which they did not seek to hide) provides a fresh perspective on lesbian life in the early twentieth century. Homestead reconstructs Cather and Lewis’s life together in Greenwich Village and on Park Avenue, their travels to the American Southwest that formed the basis of Cather’s novels The Professor’s House and Death Comes for the Archbishop, their summers as part of an all-woman resort community on Grand Manan Island, and Lewis’s magazine and advertising work as a context for her editorial collaboration with Cather. Homestead tells a human story of two women who chose to live in partnership and also explains how the Cold War panic over homosexuality caused biographers and critics to make Lewis and her central role in Cather’s life vanish even as she lived on alone for twenty-five years after her partner’s death.

“Quelques misérables places à remplir”Locating Shaped Painting in Eighteenth-Century France

2017 ◽  
Vol 80 (4) ◽  
pp. 544-571
Author(s):  
David Pullins
Keyword(s):  
Eighteenth Century ◽  
Visual Field ◽  
Decorative Arts ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

Abstract This article addresses in depth for the first time the irregularly shaped canvases known as tableaux chantournés (cut-out paintings) that were produced in vast numbers by leading academicians between the 1730s and 1750s and occupy a tenuous place between fine and applied or decorative arts. Through an examination of the term’s first uses in regard to painting and eighteenth-century critics’ responses to these works, tableaux chantournés are positioned as a means of rethinking the extraction of painting from a richer visual field and the relationship of this medium-specific agenda to the historiography of the rococo.

Hitherto Unprinted Manuscripts of the Middle English Ipotis

PMLA ◽  
1916 ◽  
Vol 31 (1) ◽  
pp. 114-160
Author(s):  
Josephine D. Sutton
Keyword(s):  
Middle English ◽  
Fourteenth Century ◽  
English Poem ◽  
Relationship Of ◽  
First Time ◽  
New Evidence ◽  
The Relationship

The relationship of the manuscripts of the Middle-English poem Ipotis has been studied in detail by Dr. Hugo Gruber on the basis of the nine mss. known to him. In addition to these there are five others, four of which are printed for the first time below. One of these, unfortunately a fragment, is of the greatest importance, since it carries back the date of the poem at least fifty years. On the basis of the earliest manuscript known to him—ms. Vernon, written about 1385—Gruber assigned the Ipotis to the second half of the fourteenth century. But in the light of the new evidence, the composition of the poem is pushed back to the very beginning of the century.

The Development of Labor under Contemporary Capitalism

2018 ◽  
Vol 4 (3) ◽  
pp. 239-260
Author(s):  
Rina Agarwala
Keyword(s):  
Social Relations ◽  
Democratic Legitimacy ◽  
Karl Polanyi ◽  
Informal Workers ◽  
Informal Labor ◽  
The Social ◽  
Indian State ◽  
Relationship Of ◽  
Self Protection ◽  
First Time

This paper offers a revised theoretical model to understand the historical development of labor under capitalism. Drawing on Antonio Gramsci, Karl Polanyi, and Nancy Fraser, the revised model highlights how state politics and ideologies have reshaped formal and informal labor to fuel evolving accumulation models since the 1950s. It also deepens our analysis of the potential and limits of labor's contemporary countermovements. Potential advances must be read in terms of increased protection and increased recognition relative to earlier eras. Limits must be read relative to the hegemonic forces splintering workers’ countermovements. Applying the revised model to the empirical case of Indian informal workers in various sectors, I illustrate how the Indian state used informal workers as a political actor (not just an economic actor) to organize consent for a powerful new hegemonic project of market reforms (of the Gramscian variety) that undid labor's twentieth-century gains and empowered large businesses, but retained democratic legitimacy with the mass labor force. I also expose and evaluate two kinds of countermovements emerging from below by Indian workers: self-protection movements (of the Polanyian variety) and emancipatory/recognition movements (of the Fraserian variety). India's recent hegemonic project enabled informal workers to counteract the dehumanizing effects of labor commodification by offering an alternative labor protection model. This model has the potential to redefine the working class (and its protection) to include multiple employment relationships for the first time. It also promises to recognize the social relations between multiple categories of vulnerable populations, reminding us that caste, gender, and class are mutually constitutive (rather than mutually exclusive). But this model is highly constrained by contemporary hegemonic forces, highlighting the complex relationship of society to state—one of contestation and, for the sake of survival, collaboration.

scholarly journals HOW TO SABOTAGE A SECRET SOCIETY: THE DEMISE OF CARL FRIEDRICH BAHRDT'S GERMAN UNION IN 1789

2017 ◽  
Vol 61 (2) ◽  
pp. 379-402
Author(s):  
ANDREW MCKENZIE-MCHARG
Keyword(s):  
Secret Society ◽  
Republic Of Letters ◽  
The Public ◽  
The North ◽  
State And Society ◽  
German Republic ◽  
The Status ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

AbstractIn 1789 in Leipzig, a slim pamphlet of 128 pages appeared that sent shock waves through the German republic of letters. The pamphlet, bearing the title Mehr Noten als Text (More notes than text), was an ‘exposure’ whose most sensational element was a list naming numerous members of the North German intelligentsia as initiates of a secret society. This secret society, known as the German Union, aimed to push back against anti-Enlightenment tendencies most obviously manifest in the policies promulgated under the new Prussian king Frederick William II. The German Union was the brainchild of the notorious theologian Carl Friedrich Bahrdt (1741–92). But who was responsible for the ‘exposure’? Using material culled from several archives, this article pieces together for the first time the back story to Mehr Noten als Text and in doing so uncovers a surprisingly heterogeneous network of Freemasons, publishers, and state officials. The findings prompt us to reconsider general questions about the relationship of state and society in the late Enlightenment, the interplay of the public and the arcane spheres and the status of religious heterodoxy at this time.

scholarly journals Microscopic Fungi in Big Cities: Biodiversity, Source, and Relation to Pollution by Potentially Toxic Metals

Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1471
Author(s):  
Maria V. Korneykova ◽  
Anastasia S. Soshina ◽  
Andrey I. Novikov ◽  
Kristina V. Ivashchenko ◽  
Olesya I. Sazonova ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Toxic Metals ◽  
Road Dust ◽  
Airborne Fungi ◽  
Potentially Toxic Metals ◽  
Opportunistic Fungi ◽  
Air Quality Assessment ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

For the first time, a mycological analysis of outdoor urban environment (air, leaves, sealed surfaces) was carried in the cities of subarctic (Murmansk) and temperate (Moscow) climatic zones. The chemical composition of dust deposited on leaves of dominant tree species was taken as an indicator of the air quality. Assessment of the complex impact of factors (climate zone, type of substrate, anthropogenic load) on the quantitative and qualitative parameters of mycobiome was performed. Compared to Moscow, Murmansk was characterized by an increased number and concentrations of pollutants in the deposited dust. The number of culturable airborne fungi in Murmansk was substantially lower than in Moscow. Half of the species belonged to the opportunistic in both cities. Most dangerous opportunistic fungi were absent in the air of recreational zones but present on leaves surface and in road dust in all assessed zones of the cities. Dust chemical composition affected the diversity of fungi species. While the relationship of biological parameters with concentration of potentially toxic metals was generally negative, Cd increased the fraction of opportunistic fungi in road dust. The study revealed an importance of substrate in determining the sensitivity of outdoor mycobiome to pollution and highlighted its biological characteristics sensitive to climate.

Sign in / Sign up

Export Citation Format

Share Document