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Institution

Opole University of Technology

EducationOpole, Poland
About: Opole University of Technology is a education organization based out in Opole, Poland. It is known for research contribution in the topics: Machining & Surface roughness. The organization has 2025 authors who have published 4612 publications receiving 25211 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the authors investigated the capacity of Brazil's 115 million hectares of cultivated pasturelands to meet projected demands while considering biophysical constraints and found that the current productivity of Brazilian cultivated pastureland is only 34% of its potential.
Abstract: Providing food and other products to a growing human population while safeguarding natural ecosystems and the provision of their services is a significant scientific, social and political challenge. With food demand likely to double over the next four decades, anthropization is already driving climate change and is the principal force behind species extinction, among other environmental impacts. The sustainable intensification of production on current agricultural lands has been suggested as a key solution to the competition for land between agriculture and natural ecosystems. However, few investigations have shown the extent to which these lands can meet projected demands while considering biophysical constraints. Here we investigate the improved use of existing agricultural lands and present insights into avoiding future competition for land. We focus on Brazil, a country projected to experience the largest increase in agricultural production over the next four decades and the richest nation in terrestrial carbon and biodiversity. Using various models and climatic datasets, we produced the first estimate of the carrying capacity of Brazil's 115 million hectares of cultivated pasturelands. We then investigated if the improved use of cultivated pasturelands would free enough land for the expansion of meat, crops, wood and biofuel, respecting biophysical constraints (i.e., terrain, climate) and including climate change impacts. We found that the current productivity of Brazilian cultivated pasturelands is 32–34% of its potential and that increasing productivity to 49–52% of the potential would suffice to meet demands for meat, crops, wood products and biofuels until at least 2040, without further conversion of natural ecosystems. As a result up to 14.3 Gt CO2 Eq could be mitigated. The fact that the country poised to undergo the largest expansion of agricultural production over the coming decades can do so without further conversion of natural habitats provokes the question whether the same can be true in other regional contexts and, ultimately, at the global scale.

355 citations

Journal ArticleDOI
TL;DR: In this paper, a comprehensive analysis of literature pertaining to ecological trends in machining processes of difficult-to-cut materials (e.g. hard steels, Ti-based alloys, Ni based alloys) has been performed.

260 citations

Journal ArticleDOI
TL;DR: In this paper, a method for determination of multiaxial load segments from original service histories, where the loaded machine part is meaningfully subjected to fatigue damage, is presented, where load segments are directly separated from a service-loading history, which can be of a random character.

212 citations

Journal ArticleDOI
TL;DR: The study indicates that the variance of anxiety during the COVID-19 outbreak may be explained for about 60% by such variables, like high stress, low general self-rated health, female gender, and frequent use of both emotion-oriented and task-oriented coping styles.
Abstract: Purpose The purpose of this study is to examine the association of anxiety with self-rated general health, satisfaction with life, stress and coping strategies of university students during the COVID-19 pandemic outbreak in Poland. Participants and methods A total of 914 university students, ranged in age between 18 and 40 years old (M = 23.04, SD = 2.60), participated in an online survey. The study was performed between 30 March and 30 April 2020, during the general coronavirus quarantine. Participants completed a standard psychological questionnaire, including General Anxiety Disorder (GAD-7), General Self-Rated Health (GSRH), Satisfaction With Life Scale (SWLS), Perceived Stress Scale (PSS), and Coping Inventory for Stressful Situations (CISS). Results The majority of students (65%) showed mild to severe GAD and a high level of perceived stress (56%). Those students who had the worst evaluated current GSRH, in comparison to the situation before the COVID-19 outbreak, also demonstrated higher levels of anxiety, perceived stress, and emotion-oriented coping styles. The study indicates that the variance of anxiety during the COVID-19 outbreak may be explained for about 60% by such variables, like high stress, low general self-rated health, female gender, and frequent use of both emotion-oriented and task-oriented coping styles. Conclusion University students experience extremely high stress and anxiety during quarantine period and they need professional help to cope with COVID-19 pandemic. The results of this study may help prepare appropriate future intervention and effective prevention programs at universities.

210 citations

Journal ArticleDOI
TL;DR: In this article, the effect of three sustainable techniques, along with the traditional flood cooling system, on prominent machining indices such as cutting temperature, surface roughness, chip characteristics and tool wear in plain turning of hardened AISI 1060 steel has been investigated.

202 citations


Authors

Showing all 2042 results

NameH-indexPapersCitations
N. Veeraiah483307591
Zhixiong Li474019046
Grzegorz Królczyk411984659
Munish Kumar Gupta311923462
Thierry Baudin302443372
Piotr Niesłony29832392
Wit Grzesik291682975
Stanisław Legutko261291972
V. Ravi Kumar251261886
Krzysztof Stempak23841482
Agnieszka E. Latawiec22732266
Tadeusz Łagoda211351463
Roman Golovchak211101499
Henryk Paul201181250
Jolanta B. Krolczyk20771128
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202316
202232
2021286
2020306
2019299
2018425