scholarly journals Role of Promaxon-D in Controlling Tribological Performance of Cu-Free Brake Pads

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 441
Author(s):  
Bhaskaranand Bhatt ◽  
Navnath Kalel ◽  
Ashish Darpe ◽  
Jayashree Bijwe
Keyword(s):  
Aquatic Life ◽  
Hydrated Calcium Silicate ◽  
Friction Materials ◽  
Brake Pads ◽  
Test Standards ◽  
Enhanced Sensitivity ◽  
Noise Vibration ◽  
Almost All ◽  
The Cost

Copper appears to be an indispensable ingredient of non-asbestos organic (NAO) brake friction materials owing to its multifunctionality. However, recent findings proved it as a threat to aquatic life and efforts were initiated worldwide over the last few years to find a substitute for it. Recently, the authors’ group had reported on the potential of particulate Promaxon-D (hydrated calcium silicate), a porous material for enhancement of noise–vibration (NV) performance of Cu-free brake pads. It was felt necessary to investigate how Promaxon-D (PD) contributes to controlling tribo-performance of brake pads since this aspect is most important for the brake friction materials. A series of five types of brake pads was developed by keeping parent composition fixed and varying the theme ingredient PD content from 0–20 wt.%. The tribo-performance was evaluated on a full-scale brake inertia dynamometer as per the JASO C406 test standards. The increase in PD contents led to a reduction in density, hardness, and thermal conductivity while an increase in porosity and compressibility. With the increase in PD contents, almost all tribo properties such as average μ, fade ratio, and recovery ratio got enhanced, sensitivity of µ for pressure, speed, and temperature lowered but at the cost of wear resistance. Finally, the worn surfaces of pads and discs were observed under a scanning electron microscope equipped with energy dispersive X-ray (SEM-EDX) to find out the presence of various elements at the contact zone and to monitor specific topographical events responsible for wear mechanism.

scholarly journals Transparency in extractive industry commodities trading

2020 ◽  
Author(s):  
Olle Östensson
Keyword(s):  
Financial Management ◽  
Extractive Industry ◽  
Market Participants ◽  
Conflict Minerals ◽  
Public Financial Management ◽  
Almost All ◽  
The Cost ◽  
Positive Effect ◽  
Responsible Sourcing

The paper reviews the debate about transparency in extractive industry commodities trade. It examines the obstacles to improved transparency. A critical review of the experience with estimating losses from a lack of transparency concludes that many of the published estimates of losses from transfer mispricing and misinvoicing suffer from methodological deficiencies and appear to be exaggerations. The role of finance in extractive commodities trade is briefly discussed and it is noted that lending to companies owned by the state may affect the government’s standing with donors and investors. The most important transparency and responsible sourcing initiatives are reviewed. The initiatives appear to have had some positive effect on public financial management, investment climate, and economic growth. The experience of government-initiated responsible sourcing, including for conflict minerals, concludes that initiatives must include all or almost all market participants and that the cost of due diligence be equitably shared. Finally, a number of recommendations are made.

scholarly journals Agroecological role of biohumus on sod-podzolic soil during irrigation of the rump-timothy grass mixture

2020 ◽  
Vol 210 ◽  
pp. 04003
Author(s):  
Farrukh Musayev ◽  
Sergey Danilin ◽  
Olga Zakharova ◽  
Sergey Rodikov
Keyword(s):  
Podzolic Soil ◽  
Plant Density ◽  
First Year ◽  
Net Income ◽  
Research Results ◽  
Quality Of Products ◽  
Almost All ◽  
The Cost ◽  
Soil Activation

It has been established that it is possible to increase the productivity of grasslands on sod-podzolic soil with the introduction of biohumus against the background of irrigation. The optimal variant of the experiment with the introduction of vermicompost at the rate of 8 t/ha. The research results revealed an increase in the content of basic nutrients in the soil by 0.2 … 4 mg/100 g of soil, activation of the cellulose-degrading activity of the soil twice, which was characterized as strong on the Zvyagintsev scale. The content of organic matter in the soil increased to 0.28 t/ha. The plant density increased by 1.5 times, the height – 2 times, the yield of the grass mixture increased on average to almost 5 t/ha, the quality of products improved, which corresponded to the zootechnical norm in almost all parameters. The cost of production amounted to 2.04 rubles/kg, conditionally net income – 3.64 rubles. In the summer of 2019, the research results passed the first year of approbation at Igor VyacheslavovichBelousov LLC on an area of 1.5 hectares. The yield was 4.8 t/ha of dry matter, which is 31% higher than the control option – traditional technology.

Decommissioning – a path forward for Australia

2019 ◽  
Vol 59 (1) ◽  
pp. 25
Author(s):  
Stuart J. Barrymore ◽  
Jane Ballard
Keyword(s):  
Review Process ◽  
Australian Government ◽  
Discussion Paper ◽  
Adequate Funding ◽  
Sea Bed ◽  
Fit For Purpose ◽  
Almost All ◽  
The Cost ◽  
Selection Of

Australia has embarked on a review of its decommissioning law and practice with a comprehensive discussion paper being issued by the Department of Industry, Innovation and Science. Initial stakeholder comments and submissions have been made, and the Department is now considering those submissions with a view to issuing recommendations to the Minister. The discussion paper ultimately proposes that new laws will be implemented to ensure that Australia has a 21st century fit-for-purpose decommissioning regime to apply to its offshore petroleum installations. After an overview of the review process and the selected issues that the Department regards of significance, this article considers a selection of the issues that emerge. It is evident that diverse views exist on almost all topics, and it will not be an easy task to find a balance that both meets the goals and aspirations of industry and community sectors. This challenge is compounded by the scale of decommissioning operations and the cost that will be incurred to remediate wells and remove associated facilities. The balance sought is one that does not stifle industry’s capacity to further invest nor impose onerous or uncompetitive imposts or controls, but also assures that adequate funding is available to carry out decommissioning works. Everyone seemingly accepts that it is not the role of the Australian Government to remove the facilities and restore the sea bed. Globally, techniques that are being increasingly utilised to manage this risk involve the imposition of securities or other assurance and enhanced statutory liability mechanisms. These legal and commercial considerations are given particular focus in the article.

Role of thermal conductivity in controlling the tribo-performance of non-asbestos organic brake-pads

2020 ◽  
Vol 54 (27) ◽  
pp. 4145-4155
Author(s):  
Vishal Mahale ◽  
Jayashree Bijwe
Keyword(s):  
Thermal Conductivity ◽  
Structural Integrity ◽  
Critical Issue ◽  
Frictional Heat ◽  
Friction Materials ◽  
Excessive Heat ◽  
Brake Pads ◽  
Back Plate ◽  
Identical Composition

The range of thermal conductivity of friction materials is a critical issue since lower thermal conductivity leads to accumulation of frictional heat on the working surface, which results in excessive fade, while higher thermal conductivity leads to excessive heat flow towards back-plate resulting to “spongy brakes”. Therefore, thermal conductivity of the friction materials across the brake-pads should not be high while along the length of brake-pad; it should be high. To enhance the thermal conductivity, metals in the form of powder or fibres are used in the friction materials. Apart from improvement in thermal conductivity, strength and structural integrity, metals get actively involved in controlling the tribo-performance. Their role as improver of thermal conductivity and hence indirectly tribo-performance can never be known clearly. Keeping this in view, it was proposed to design a bulk of pad rather than the surface. Three types of pads with identical composition but differing in the bulk/body were designed by placing a thin fabric layer of Cu (2 mm away from surface) in one pad and two layers in other pad. The third pad did not contain any fabric. The developed pads were characterized for physical, chemical, thermal, and mechanical properties. Tribo-performance was evaluated on full-scale inertia dynamometer by following the JASO C 406 testing standard. It was concluded that Cu fabric inclusion led to improvement in thermal conductivity and heat exaction capacity, which in turn, improved the tribo-performance of pads significantly.

Michael Kelly, Hilary Footitt, Myriam Salama-Carr (eds.): The Palgrave Handbook of Languages and Conflict

2020 ◽  
Vol 55 (2) ◽  
Author(s):  
Ľubomír Zvada
Keyword(s):  
International Relations ◽  
Foreign Languages ◽  
Military Operations ◽  
Sources Of Information ◽  
War And Peace ◽  
Interdisciplinary Field ◽  
Speakers Of Other Languages ◽  
War And Conflict ◽  
Almost All

This Handbook maps the contours of an exciting and burgeoning interdisciplinary field concerned with the role of language and languages in situations of conflict. It explores conceptual approaches, sources of information that are available, and the institutions and actors that mediate language encounters. It examines case studies of the role that languages have played in specific conflicts, from colonial times through to the Middle East and Africa today. The contributors provide vibrant evidence to challenge the monolingual assumptions that have affected traditional views of war and conflict. They show that languages are woven into every aspect of the making of war and peace, and demonstrate how language shapes public policy and military strategy, setting frameworks and expectations. The Handbook's 22 chapters powerfully illustrate how the encounter between languages is integral to almost all conflicts, to every phase of military operations and to the lived experiences of those on the ground, who meet, work and fight with speakers of other languages. This comprehensive work will appeal to scholars from across the disciplines of linguistics, translation studies, history, and international relations; and provide fresh insights for a broad range of practitioners interested in understanding the role and implications of foreign languages in war.

Hostile Takeovers and Anti-takeover Defenses in the Russian Corporate Market

2007 ◽  
pp. 70-84 ◽  
Author(s):  
E. Demidova
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Costs And Benefits ◽  
Hostile Takeovers ◽  
Russian Market ◽  
Takeover Defenses ◽  
The Cost ◽  
European Markets

This article analyzes definitions and the role of hostile takeovers at the Russian and European markets for corporate control. It develops the methodology of assessing the efficiency of anti-takeover defenses adapted to the conditions of the Russian market. The paper uses the cost-benefit analysis, where the costs and benefits of the pre-bid and post-bid defenses are compared.

Production of Asbestos-free Brake Pad Using Groundnut Shell as Filler Material

2018 ◽  
Vol 4 (12) ◽  
Author(s):  
W. C. Solomon ◽  
M. T. Lilly ◽  
J. I. Sodiki
Keyword(s):  
Phenolic Resin ◽  
Cost Effective ◽  
Filler Material ◽  
Particle Sizes ◽  
Brake Pad ◽  
Brake Pads ◽  
Environmental Friendly ◽  
Sieve Size ◽  
Groundnut Shell ◽  
The Cost

The development and evaluation of brake pads using groundnut shell (GS) particles as substitute material for asbestos were carried out in this study. This was with a view to harnessing the properties of GS, which is largely deposited as waste, and in replacing asbestos which is carcinogenic in nature despite its good tribological and mechanical properties. Two sets of composite material were developed using varying particle sizes of GS as filler material, with phenolic resin as binder with percentage compositions of 45% and 50% respectively. Results obtained indicate that the compressive strength and density increase as the sieve size of the filler material decreases, while water and oil absorption rates increase with an increase in sieve size of GS particle. This study also indicates that the cost of producing brake pad can be reduced by 19.14 percent if GS is use as filler material in producing brake pad. The results when compared with those of asbestos and industrial waste showed that GS particle can be used as an effective replacement for asbestos in producing automobile brake pad. Unlike asbestos, GS-based brake pads are environmental friendly, biodegradable and cost effective.

ON EVALUATION OF THE ROLE OF THERMAL AND WIND FACTORS FOR A PHYSICAL MODEL OF THE WORLD OCEAN GENERAL CIRCULATION SYSTEM

2019 ◽  
Vol 47 (3) ◽  
pp. 80-91
Author(s):  
V. G. Neiman
Keyword(s):  
Physical Model ◽  
Ocean Circulation ◽  
General Circulation ◽  
World Ocean ◽  
Circulation System ◽  
The Public ◽  
The World ◽  
Almost All ◽  
Conceptual Foundations

The main content of the work consists of certain systematization and addition of longexisting, but eventually deformed and partly lost qualitative ideas about the role of thermal and wind factors that determine the physical mechanism of the World Ocean’s General Circulation System (OGCS). It is noted that the conceptual foundations of the theory of the OGCS in one form or another are contained in the works of many well-known hydrophysicists of the last century, but the aggregate, logically coherent description of the key factors determining the physical model of the OGCS in the public literature is not so easy to find. An attempt is made to clarify and concretize some general ideas about the two key blocks that form the basis of an adequate physical model of the system of oceanic water masses motion in a climatic scale. Attention is drawn to the fact that when analyzing the OGCS it is necessary to take into account not only immediate but also indirect effects of thermal and wind factors on the ocean surface. In conclusion, it is noted that, in the end, by the uneven flow of heat to the surface of the ocean can be explained the nature of both external and almost all internal factors, in one way or another contributing to the excitation of the general, or climatic, ocean circulation.

Changing Role of Agriculture in Income and Employment, and Trends of Agricultural Worker Productivity in Indian States

2020 ◽  
pp. 183-189
Keyword(s):  
Green Revolution ◽  
Positive Trend ◽  
Worker Productivity ◽  
Indian States ◽  
Agricultural Worker ◽  
The Sixties ◽  
High Level ◽  
The Cost ◽  
Changing Role

The productivity of land has been often discussed and deliberated by the academia and policymakers to understand agriculture, however, very few studies have focused on the agriculture worker productivity to analyze this sector. This study concentrates on the productivity of agricultural workers from across the states taking two-time points into consideration. The agriculture worker productivity needs to be dealt with seriously and on a time series basis so that the marginal productivity of worker can be ascertained but also the dependency of worker on agriculture gets revealed. There is still disguised unemployment in all the states and high level of labour migration, yet most of the states showed the dependency has gone down. Although a state like Madhya Pradesh is doing very well in terms of income earned but that is at the cost of increased worker power in agriculture as a result of which, the productivity of worker has gone down. States like Mizoram, Meghalaya, Nagaland and Tripura, though small in size showed remarkable growth in productivity and all these states showed a positive trend in terms of worker shifting away from agriculture. The traditional states which gained the most from Green Revolution of the sixties are performing decently well, but they need to have the next major policy push so that they move to the next orbit of growth.

Music publications in Galicia in the 19th — beginning of the 20th centuries: production, advertising, pricing

2019 ◽  
pp. 481-499
Author(s):  
Olga Osadtsia
Keyword(s):  
Book Publishing ◽  
Initial Form ◽  
Music Production ◽  
Bibliographic Information ◽  
Financial Factor ◽  
Determining Factors ◽  
Book Selling ◽  
The Cost ◽  
Import Trade

The main forms and methods of distribution of music publications in Galicia in the XIX — early XX centuries are scrutinized. The demand for the relevant music production is one of the determining factors in the formation of the musical publishing repertoire, its structure and special features in the process of the existence of music publications in society. It is noted that export-import trade in books has become especially widespread in Galicia; there are facts about the links between publishers and booksellers in Lviv and Warsaw. The basic types of presentation of book advertising of music products, its regional peculiarities, and ways of its placement are considered. Special emphasis is placed on the role of specialized press in the advertising of music products, typical examples of press advertising. The registration bibliographic information as the initial form of music bibliography and the forms of its compilation are distinguished. The emphasis is placed on the importance of thorough critical articles as a separate typological group of bibliographic publications under the conditions of formation of the Ukrainian bibliography, in which the main importance is given to the disclosure of the content and evaluation of the reviewed work. The combination of article genres and reviews on examples of separate publications by Stanislav Lyudkevych and Ivan Franko is traced. Special book-selling and book-publishing catalogs are characterized. While executing the marketing and advertising function, these directories were addressed primarily to foreign consumers and distributors (the so-called commissioners).One way to distribute music is to subscribe through libraries. A significant financial factor in the distribution of any printed matter was the price that depended primarily on the cost of each process associated with its publication. Keywords: music publications, bookstore, book-trading enterprise, advertising of publications, pricing.

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