scholarly journals Green Tribology

Author(s):  
Nguyen Van Minh ◽  
Alexander Kuzharov ◽  
Le Hai Ninh ◽  
Nguyen Huynh ◽  
Andrey Kuzharov

This chapter provides an overview of Green tribology, which is a new direction in the development of tribology, a new interesting area for scientific researches and a new way to turn tribology into a friend of ecological environment and saving energy. Green tribology is considered as well as close area with other “green” disciplines like green engineering and green chemistry. In the chapter, the various aspects of green tribology such as the concept, perspectives, role and goal, main principles, primary areas, challenges and directions of the future development have been discussed. It was clarified that green tribology can be defined as an interdisciplinary field attributed to the broad induction of various concepts such as energy, materials science, green lubrication, and environmental science. The most important role and goal of green tribology is improvement of efficiency by minimizing wear and friction in tribological processes to save energy, resources and protect environment, and consequently, improve the quality of human life. The twelve principles and three areas of green tribology were analyzed. Observation of these principles can greatly reduce the environmental impact of tribological processes, assist economic development and, as a result, improve the quality of life. The integration of these areas remains the major challenge of green tribology and defines the future directions of research in this field. This work also presents a rather detailed analysis of the most important effect in green tribology—the “zero-wear” effect (selective transfer effect). It was established that the “zero-wear” effect is due to self-organization in frictional interaction in tribological systems, which is the consequence of the complex tribo-chemical reactions and physico-chemical processes occurred in the area of frictional contact, that lead to the manifestation of unique tribological characteristics: super-antifrictional (friction coefficient ~ 10−3) and without wear (intensity wear ~10−15). This condition of tribo-system was provided by a protective nanocrystalline servovite film made of soft metal with unusual combination of mechanical properties.

ADALAH ◽  
2020 ◽  
Vol 4 (4) ◽  
Author(s):  
Nisaul Fatona

Abstract: Education is an effort to improve the quality of human life. Every human being needs education, whenever and wherever. Education is a way to educate the nation’s children and welcome a bright future. One of the goals of education is that a person who can compete in the future and be able to develop one’s potential and talent is formed. There are children and the young stopped from school, did not continue their education to the higher grade, therefore their future is dangerous.Keywords: Education, the future, the resounding                                      Abstrak: Pendidikan merupakan suatu upaya untuk meningkatkan kualitas kehidupan manusia. Setiap manusia membutuhkan pendidikan sampai kapanpun dan dimanapun. Pendidikan merupakan jalan untuk mencerdaskan anak bangsa serta menyongsong masa depan gemilang. Salah satu tujuan pendidikan ialah membentuk sosok yang mampu bersaing di masa depan serta mampu mengembangkan potensi dan bakat seseorang. Pada kenyataannya banyak generasi muda yang putus sekolah dan tidak melanjutkan pendidikannya ke jenjang yang lebih tinggi, sehingga masa depan mereka terancam suram.Kalimat kunci: pendidikan, masa depan, gemilang


Horizons ◽  
1992 ◽  
Vol 19 (2) ◽  
pp. 277-287
Author(s):  
John M. Ballweg

AbstractOne does not read far or engage in a discussion about the complexity of the modern world without sensing an evolutionary vision which reflects the thought of Teilhard de Chardin. College students who are introduced to the Teilhardian vision respond in positive and creative ways. Teaching such a course reveals insights into young people's reaction to the present and future implications of a high-tech society. In an age of increasing control over the forces of nature by human-kind, crucial questions emerge. Two concerns attract students to Teilhard: fear of the future in terms of the direction and quality of human life; and an interest in the relationship between religion and science, which indicates substantive attitudes of a younger generation toward faith in God. Whether there is agreement with Teilhard is not the question, but the fact that he has pressed us to face the issues.


Author(s):  
Marina I. Dolzhenkova ◽  
Tatyana G. Bortnikova

The study is devoted to examining the essence of the phenomenon of social and cultural urbanism – an extensive interdisciplinary field of research devoted to cities and the processes of urban lifestyle formation, urban leisure, overcoming depersonalization, asociality and isolation of citizens, their mutual alienation and antipathy. The modern city is considered as a specific, ration-ally organized territory; a special self-developing whole organism, where a uniquely organized so-cial and patial environment arises, the form of existence of a particular society. The problems of social and cultural urbanism are connected with mass urban culture and leisure, within the frame-work of which projects of recreation zones are being developed that positively affect the develop-ment of urban spaces and communities, making them attractive to residents and tourists. In any urban environment, a special way and type of culture develops; in the structure of the settlement functional clusters are formed that integrate the life, work and leisure of citizens. The quality of human life largely depends on the state of the social and cultural environment created in the city (quality of housing, public services, communications, trade, health care, education, etc.). The ur-ban social and cultural environment is positioned as a complex self-organizing subsystem of the urban structure, characterized by a number of quantitative and qualitative indicators. The urban environment through the methods of people interaction forms a unique social and psychological type of personality, which is characterized by rationality, mobility, willingness to change, the sub-ordination of one’s own interests to the needs of others, the ability to overcome the difficulties of reality. Common problems of the urban social and cultural environment are insufficient cultural and leisure infrastructure; low living standards and purchasing power of the population; lack of sustainable cultural and historical traditions; lack of active partnership between organizations of the spheres of culture, leisure and art in solving city problems.


Author(s):  
Chiara Chiatti ◽  
Claudia Fabiani ◽  
Anna Laura Pisello

In recent decades, research on persistent luminescence has led to new phosphors and promising performance. Efforts to improve the quality of phosphors’ afterglow have paved the way toward innovative solutions for many disciplines. However, there are few examples of the implementation of luminescent materials. In addition to providing a general background on persistent luminescence, the techniques used for its analysis, and its multidisciplinary potential in energy and environmental science, this article aims to explain the existing gap between the physical-chemical approach and the effective implementation of luminescent materials in larger-scale applications. It investigates engineering solutions in terms of the possible benefits of luminescence in lighting energy savings and passive cooling of urban surfaces. Finally, this article aims to reduce the abovementioned gap by suggesting what is most needed for the successful application of luminescent materials in the built environment. Expected final online publication date for the Annual Review of Materials Science, Volume 51 is July 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.


2021 ◽  
pp. 28-31
Author(s):  
L.M. Allachverdiev ◽  
◽  
N.V. Ponomarenko

Analyzed is the prospects for further development of humankind in future in the field of medical technologies. Trend “The science of the future” began to develop actively in the second half of the twentieth century. Futurology as a scientific and philosophical direction always actualizes the possible and alternative future, the ways of implementing the most fantastic ideas so far. Identifying possible lines of development and outlining the sphere of moral responsibility, futurology together with philosophy looks for opportunities to achieve immortality as a long-term goal. Then we consider the latest scientific medical projects to achieve a technical progress in improving quality and length of human life, bringing us closer to real immortality. While the first steps are being taken new methods of disease prevention are being tested, the causes of various pathologies are reconsidered and strategies for overcoming them are being developed. As a subject of study, the authors of the article review the role of medicine in the social life in the future as one of the most cutting-edge and high-demand areas of high-tech business, requiring philosophical reflection and fragmentation of the zone of responsibility on the way to real immortality.


2008 ◽  
Vol 571-572 ◽  
pp. 261-266 ◽  
Author(s):  
Norbert Schell ◽  
René V. Martins ◽  
Felix Beckmann ◽  
Hans Ulrich Ruhnau ◽  
Rüdiger Kiehn ◽  
...  

The future High Energy Materials Science Beamline HEMS at the new German high brilliance synchrotron radiation storage ring PETRA III [1] will have a main energy of 120 keV, will be fully tunable in the range of 50 to 300 keV, and will be optimized for sub-micrometer focusing with Compound Refractive Lenses and Kirkpatrick-Baez Multilayer mirrors. Design and construction is the responsibility of the Research Center Geesthacht, GKSS, with approximately 70 % of the beamtime being dedicated to Materials Research, the rest reserved for “general physics” experiments covered by DESY, Hamburg. Fundamental research will encompass metallurgy, physics and chemistry. For first experiments in investigating grain-grain-interactions a dedicated 3D-microstructure-mapper will be designed. Applied research for manufacturing process optimization will benefit from the high flux in combination with ultra-fast detector systems allowing complex and highly dynamic in-situ studies of microstructural transformations. The beamline infrastructure will allow easy accommodation of large user provided equipment. Experiments targeting the industrial user community will be based on well established techniques with standardised evaluation, allowing "full service" measurements. Environments for strain mapping [2] on large structural components up to 1 t will be provided as well as automated investigations of large numbers of samples, e.g. for tomography and texture determination. The current design for the beamline (P07 in sector 5 of the future experimental hall) consists of a nearly five meter in-vacuum undulator source (U19-5) optimized for high energies, a general optics hutch, an in-house test facility and three independent experimental hutches working alternately, plus additional set-up and storage space for long-term experiments. HEMS should be operational in spring 2009 as one of the first beamlines running at PETRA III.


2019 ◽  
Vol 15 (6) ◽  
pp. 155014771985398 ◽  
Author(s):  
Ruben Sánchez-Corcuera ◽  
Adrián Nuñez-Marcos ◽  
Jesus Sesma-Solance ◽  
Aritz Bilbao-Jayo ◽  
Rubén Mulero ◽  
...  

The introduction of the Information and Communication Technologies throughout the last decades has created a trend of providing daily objects with smartness, aiming to make human life more comfortable. The paradigm of Smart Cities arises as a response to the goal of creating the city of the future, where (1) the well-being and rights of their citizens are guaranteed, (2) industry and (3) urban planning is assessed from an environmental and sustainable viewpoint. Smart Cities still face some challenges in their implementation, but gradually more research projects of Smart Cities are funded and executed. Moreover, cities from all around the globe are implementing Smart City features to improve services or the quality of life of their citizens. Through this article, (1) we go through various definitions of Smart Cities in the literature, (2) we review the technologies and methodologies used nowadays, (3) we summarise the different domains of applications where these technologies and methodologies are applied (e.g. health and education), (4) we show the cities that have integrated the Smart City paradigm in their daily functioning and (5) we provide a review of the open research challenges. Finally, we discuss about the future opportunities for Smart Cities and the issues that must be tackled in order to move towards the cities of the future.


2019 ◽  
Vol 3 (4) ◽  
pp. 217
Author(s):  
Manurung Paisal ◽  
Aryni Yen

Education contribution to the formation of the style and quality of the future of human civilization can not be denied again. Education conventionally until the modern age was still believed to be a strategic location to expand the horizons and to provide the most valuable information about the meaning and purposing of life as the norm was taken. It needed that were essential to face the challenges of the changes in the future to create individuals, communities, and nations. While education digitalism was a very effective system to improve the quality of human life in all aspects of human life, education presented conscious efforts. Encouragement of education not only in preparing personnel professional teachers in their field but also encouraged prepared proteges facing to change towards conventional for digitalism. A fundamental change in the framework of preparing students was: change's ideology, self-control, futuristic effect, meaning in life.


2018 ◽  
Vol 14 (1) ◽  
Author(s):  
Sri Aniyati ◽  
Aisyah Dzil Kamalah

Elderly is the last stage of development of human life. Elderly often experience physical, psychological, social or problems with the environment around them. This is make an affects in elderly’re quality of life. This study aims to determine the quality of life of the elderly who live in working area of puskesmas Bojong I Kabupeten Pekalongan. This research uses descriptive quantitative research design. Researchers describe QAL elderly by using a WHOQAL measuring instrument is a Quality Of Life (QAL) by WHO. The Quality Of Life (QAL) picture of the elderly in the working area of the Puskesmas Bojong I is largely adequate (74%). (72%) is sufficient, social (74%) enough and environment (64%) enough. In the future, efforts can be made to improve the quality of life of the elderly both physically, psychologically, socially and environmentally.


2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Sara Maria Oliveira Pinto ◽  
Sílvia Maria Alves Caldeira Berenguer ◽  
José Carlos Amado Martins

Cancer is a dreaded disease that affects all dimensions of human life. In this context, issues related to the quality of life—as happiness, perception about health status, or health literacy—are important. This study aims to analyze the following topics the perception: the Portuguese cancer patients have about their health status while undergoing chemotherapy, the satisfaction with the information relating to their health, their level of happiness, and their vision of the future. An observational, cross-sectional, and descriptive study was developed. Data were collected between May and July 2012 in the day hospital of a central hospital in northern Portugal. The sample was composed of 92 cancer patients who were asked to answer a questionnaire during chemotherapy. The results indicate that, despite this life-threatening disease, patients consider themselves fairly happy and have an optimistic view of the future. Information about their health condition and religious beliefs was important coping mechanisms to help dealing with the suffering caused by the disease. The study highlights the importance of providing care in a holistic way. Nurses must be alert and available to listen, answer questions, provide supporting structures, or refer to other professionals when needed.


Sign in / Sign up

Export Citation Format

Share Document