Tribotechnical and ecological Evaluation of Friction Pairs of Brake Devices in Lifting and Transport Machines

2020 ◽  
Vol 41 (4) ◽  
pp. 475-484
Author(s):  
А. L Nosko ◽  
◽  
Wojciech Tarasiuk ◽  
I. A. Sharifullin ◽  
E. V. Safronov ◽  
...  
2019 ◽  
Vol 2 (67) ◽  
pp. 13-15
Author(s):  
A. Yu. Belyushina ◽  
Yu. K. Gajdaj ◽  
N. V. Chernysheva

2019 ◽  
Vol 74 (1) ◽  
pp. 42-52 ◽  
Author(s):  
Sebastian Wojciech Przemieniecki ◽  
Marta Damszel ◽  
Tomasz Paweł Kurowski ◽  
Jędrzej Mastalerz ◽  
Karol Kotlarz

2021 ◽  
Vol 675 (1) ◽  
pp. 012009
Author(s):  
Chujun Chen ◽  
Xuejun Yang ◽  
Quanping Wen ◽  
Ye Zhang

2015 ◽  
Vol 118 ◽  
pp. 198-202 ◽  
Author(s):  
Ícaro T.A. Moreira ◽  
Olívia M.C. Oliveira ◽  
Carine S. Silva ◽  
Mariana Cruz Rios ◽  
Antônio F.S. Queiroz ◽  
...  

2014 ◽  
Vol 675-677 ◽  
pp. 345-349
Author(s):  
Ji Cai Qiu

In order to analysis the Heavy metals in the bottom mud at beng river, we put the river reach between the bridge of beng river beside the er’huang road and the bridge beside the yin’meng road as the main research object, survey 14 transects of bottom mud from three indications (Hg,Pb,Cr) of the river and build a relate standards about the pollution of bottom mud depend on the domestic standards, in this paper, we use the potential ecological risk index method which was putted forward by Swedish scientists Hakanson as the criterion of the pollution about heavy metals in the mud. The results show that: at the rive reach mentioned above, we found there are very high heavy metals content in the bottom mud.


2013 ◽  
Vol 31 (2) ◽  
pp. 469-482 ◽  
Author(s):  
G. Concenço ◽  
M. Tomazi ◽  
I.V.T. Correia ◽  
S.A. Santos ◽  
L. Galon

In simple terms, a phytosociological survey is a group of ecological evaluation methods whose aim is to provide a comprehensive overview of both the composition and distribution of plant species in a given plant community. To understand the applicability of phytosociological surveys for weed science, as well as their validity, their ecological basis should be understood and the most suitable ones need to be chosen, because cultivated fields present a relatively distinct group of selecting factors when compared to natural plant communities. For weed science, the following sequence of steps is proposed as the most suitable: (1) overall infestation; (2) phytosociological tables/graphs; (3) intra-characterization by diversity; (4) inter-characterization and grouping by cluster analysis. A summary of methods is established in order to assist Weed Science researchers through their steps into the realm of phytosociology.


Author(s):  
Zuzana Sarvašová ◽  
Miroslav Kovalčík ◽  
Zuzana Dobšinská ◽  
Jaroslav Šálka ◽  
Vilém Jarský

AbstractThis literature review deals with the understanding of ecosystem services related to the question of their applicability and appropriate methods for their valuation. We distinguish between ecological valuation methods that aim to assess the significance of landscape characteristics, conventional economic, i.e. monetary valuation and non-monetizing valuation or assessment. Ecological evaluation methods derive values by following a cost of production approach which neglects consumer preferences. Economic valuation methods focus on the exchange value of ecosystem services, i.e. they are based on consumer preferences, but do not adequately take into account the complex internal structure of ecosystems. We conclude that – from the view of implementation of ecosystem services for policy support and consulting – successful valuation approaches should particularly consider the relationships between economic, ecological and social aspects of ecosystem services’ provision.


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