Results 31 to 40 of about 99,009 (221)
Measuring the area and number of ballast particle contacts at sleeper/ballast and ballast/subgrade interfaces [PDF]
, 2015 The number of railway ballast particles in contact with a sleeper may be relatively small. The discrete and non-uniform nature of these contacts may cause breakage and wear.
Abadi, Taufan +3 more
core +1 more source
Broadening the semiaquatic scene: Quantification of long bone microanatomy across pinnipeds
The Anatomical Record, EarlyView.Abstract Investigations of bone microanatomy are commonly used to explore lifestyle strategies in vertebrates. While distinct microanatomical limb bone features have been established for exclusively aquatic and terrestrial lifestyles, identifying clear patterns for the semiaquatic lifestyle remains more challenging.
Apolline Alfsen +10 more
wiley +1 more source
Journal of Marine Science and EngineeringHerein, we evaluate the scientific basis for managing hull fouling of ships entering Korean ports, diagnose biological risks that may occur when in-water cleaning (IWC) systems remove hull fouling, and present a protocol for evaluating these risks (the ...
Bonggil Hyun +10 more
doaj +1 more source
Applied Sciences, 2021 The key to modeling the interlocking of geogrid-reinforced ballast is considering both the continuous deformation characteristics of the geogrid and the discontinuity of the ballast particles.
Jianjun Fu +3 more
doaj +1 more source
The spread of non‐native species
Biological Reviews, EarlyView.ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock +16 more
wiley +1 more source
Pesquisa Agropecuária Brasileira, 1999 Entre os fatores que podem influenciar o desempenho de tração do trator agrícola, destacam-se a pressão de inflação e a carga sobre o rodado motriz. Neste trabalho, o objetivo foi avaliar, em situação de campo, a influência dos fatores inflação (sob ...
Kiyoshi Yanai +4 more
doaj +1 more source
Biology, 2023 The spionid polychaete Polydora hoplura Claparède, 1868 is a shell borer widely occurring across the world and considered introduced in many areas. It was originally described in the Gulf of Naples, Italy.
Vasily I. Radashevsky +5 more
doaj +1 more source
Assessing the Role of Longitudinal Variability of Vertical Track Stiffness in the Long-Term Deterioration [PDF]
, 2016 The performance of the railway system in terms of dynamic loading is depending mainly on the track support conditions. Usually, the track stiffness is used as the main parameter to describe the support conditions and is defined as the ratio of the load ...
Bezin, Yann +2 more
core +1 more source
The impacts of biological invasions
Biological Reviews, EarlyView.ABSTRACT The Anthropocene is characterised by a continuous human‐mediated reshuffling of the distributions of species globally. Both intentional and unintentional introductions have resulted in numerous species being translocated beyond their native ranges, often leading to their establishment and subsequent spread – a process referred to as biological
Phillip J. Haubrock +42 more
wiley +1 more source
Eletrônica de Potência, 2008 This paper presents a simple configuration, based on the integration of two flyback converters, to supply high intensity discharge (HID) lamps with a low frequency square waveform (LFSW), in order to avoid the occurrence of the acoustic resonance (AR ...
Tiago B. Marchesan +4 more
doaj +1 more source