Results 111 to 120 of about 62,116 (300)
Research on a Simplified Estimation Method for Wheel Rolling Resistance on Unpaved Runways
Applied SciencesAiming at the practical difficulties (e.g., high cost of full-scale tests) in testing the rolling resistance of aircraft wheels on unpaved runways, this study establishes a theoretical calculation formula for wheel rolling resistance based on the Bekker ...
Pengshuo Guo, Xiaolei Chong, Zihan Wang
doaj +1 more source
Design of a compliant wheel for a miniature rover to be used on Mars [PDF]
The Jet Propulsion Laboratory has identified the need for a compliant wheel for a miniature martian rover vehicle. This wheel must meet requirements of minimum mass, linear radial deflection, and reliability in cryogenic conditions over a five year ...
Carroll, Mark +2 more
core +1 more source
Dynamic effect of high speed railway traffic loads on the ballast track settlement [PDF]
, 2011 The traditional ballast track structures are still being used in high speed railways lines with success, however technical problems or performance features have led to non-ballast track solution in some cases.
Gabaldón Castillo, Felipe +2 more
core +1 more source
Journal of Analytical Psychology, EarlyView.Abstract This paper examines the concept of non‐understandable in psychotherapy, based on the author's own play therapy with a boy with mild ASD (autism spectrum disorder). ASD is considered to belong to an area beyond comprehension, as psychotherapy is often deemed ineffective for it.
Toshio Kawai
wiley +1 more source
Lunar material transport vehicle [PDF]
The proposed vehicle, the Lunar Material Transport Vehicle (LMTV), has a mission objective of efficient lunar soil material transport. The LMTV was designed to meet a required set of performance specifications while operating under a given set of ...
Fisher, Charles D. +3 more
core +1 more source
Mechanische Bodenbelastung - Effekte auf Eigenschaften des Oberbodens und den Ertrag von Erbse in Reinsaat und im Gemenge [PDF]
, 2013 In organic agriculture legumes build the basis of soil fertility. A diminution of the legumes´ performance not only restricts their own yield but also the yield of the whole crop rotation.
Brandhuber, Robert +7 more
core
, 2008 This paper reports on a study of the effect of the passage of multi-axle harvesting machines on the soil physical properties. In particular, it investigates the effect of the rear tyre of a combine harvester on the amount of soil compaction subsequent to
Ansorge, Dirk, Godwin, R. J.
core +1 more source
Natural Resources Forum, EarlyView.ABSTRACT The MENA region faces a critical challenge: balancing economic growth spurred by foreign direct investment (FDI) with environmental sustainability. While FDI can bring technological advancements and capital, concerns exist about its potential to exacerbate environmental degradation, particularly carbon emissions.
Brahim Bergougui, Syed Mansoob Murshed
wiley +1 more source
MiningBackground: Bucket-wheel excavators are critical assets in surface mining operations, where structural modifications to increase productivity must be validated through rigorous stress analysis to ensure operational safety.
Angela Maria Andreica +2 more
doaj +1 more source
The predatory behavior of ants: an impressive panoply of morphological adaptations
Insect Science, EarlyView.This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean +6 more
wiley +1 more source