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Yucang Dong, Hai Zhang, Zhengguo Zhu and Yongquan Zhu
The accurate prediction and evaluation of stress and displacement fields of surrounding rock is the fundamental premise for the deformation control of soft rock tunnels under high geo-stress condition. However, due to the complicated mechanical character...
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Zuliang Zhong, Tenglong Tang and Yapeng Li
The mechanical properties of the surrounding rock of the Xigeda stratum are easily affected by water content. In order to obtain the support characteristics of Xigeda strata, the finite difference method was used to obtain the longitudinal deformation of...
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Angus Gray-Stephens, Tahsin Tezdogan and Sandy Day
This study investigates the level of accuracy with which Computational Fluid Dynamics (CFD) is capable of modelling the nearfield longitudinal wake profiles of a high-speed planing hull. It also looks to establish how various set-ups influence the accura...
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M. B. Kurhan,T. A. Senchenko,K. V. Moyseyenko
Pág. 75 - 82
In the article the results of natural measurements of the direct route of switches of type ?65 mark 1/11 on ferroconcrete sleepers in the plan and longitudinal profile are presented. The data obtained can be applied for research of the rolling stock dyna...
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Andrés López-Sagarra, Andrés Baena-Raya, Miguel Á. Casimiro-Artés, Paulino Granero-Gil and Manuel A. Rodríguez-Pérez
This study aimed to describe the acceleration?speed (AS) profile of soccer players during competition and to analyse their seasonal changes and inter-player differences. The AS profile values (theoretical maximum acceleration (A0) and speed (S0)) of 14 e...
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A. M. Orlovs?kyi,K. L. Kalenyk,V. V. Kovalchuk
Pág. 130 - 135
In the paper the effect of longitudinal profile of rigid frogs of type R65 mark 1/11 on reinforced concrete sleepers on the interaction in the ?wheel-rail? system in the zone of rolling surface irregularities is investigated.
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Aidar G. Sharifullin, Artyom V. Gusarov, Olga A. Lavrova and Achim A. Beylich
A very noticeable increase in the beaver population (mainly the Eurasian beaver (Castor fiber L.)) in the East European Plain since the end of the 20th century through reintroduction contributed to the emergence of a large number of beaver dams and ponds...
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Douglas Filenga
Pág. 1724 - 1734
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V. I. Kharlan
Pág. 81 - 85
The article investigates the influence of plane, the longitudinal profile parameters and the kind of rolling stock on the level of maximal speed in introduction of high speed train services.
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Juan José González Bayón,Rubén Borrajo Pérez,Amadou Koulibaly
Pág. 62 - 71
En este artículo se realizó la simulación numérica (utilizando Fluent 6.3) de un colector solar de aire operando en convección natural con el objetivo de determinar el comportamiento de los perfiles de velocidad y temperatura. Los resultados muestran que...
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D. M. Kozachenko
Pág. 54 - 58
A model structure of track lay-out for simulation of the process of braking-up and making up of freight trains on the sorting humps is presented. The model is made on the basis of weighed directed graphs. The longitudinal hump profile is approximated by ...
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Fabien Menant, Jean-Marc Martin, Daniel Meignen, David Bétaille, Miguel Ortiz
Pág. 3013 - 3020
Recently, IFSTTAR has taken an interest in the use of probe vehicles for the road monitoring of some characteristics such as the pavement longitudinal profile. After studying the feasibility of the method on a metrological angle, a measurement chain and ...
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Jiaqi Nan, Jingxuan Li and Lijun Yang
Cylindrical ducts with axial mean temperature gradient and mean flows are typical elements in rocket engines, can combustors, and afterburners. Accurate analytical solutions for the acoustic waves of the longitudinal and transverse modes within these duc...
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Kacper Jancewicz, Milena Rózycka, Mariusz Szymanowski, Maciej Kryza and Piotr Migon
We review DTM-based measures that can be applied to study the main drainage divides of mountain ranges. Both measures proposed in the past and new or modified approaches are presented, in order to show an ensemble of tools and jointly discuss their infor...
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Ying Guan, Li-Xin Zhong, Chaoyang Qian and Rui-Pin Chen
The near-field characteristics of a radially-variant vector beam (RVVB) are analyzed by using the vectorial angular spectrum method. The non-paraxial RVVB can be decomposed into the propagating wave and the evanescent wave in near field. The coherent sup...
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Janine M Castro and Aaron Beavers
Aquatic organism passage barriers have been identified as one of the key impediments to recovery of salmonids and other migratory aquatic organisms in the Pacific Northwest of the United States. As such, state and federal agencies invest millions of doll...
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Janine M Castro, Aaron Beavers
Pág. 1 - 20
Aquatic organism passage barriers have been identified as one of the key impediments to recovery of salmonids and other migratory aquatic organisms in the Pacific Northwest of the United States. As such, state and federal agencies invest millions of doll...
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María Guadalupe Barrera Núñez, Mónica Bueno, Miguel Ángel Molina-Montiel, Lorena Reyes-Vaquero, Elena Ibáñez and Alma Angélica Del Villar-Martínez
Kalanchoë gastonis-bonnieri Raym.-Hamet & Perrier is a plant used for medicinal purposes in the treatment of several ailments. The aim of this study was to analyze the chemical profile of extracts from K. gastonis-bonnieri embryogenic calli, generate...
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Abdollah Malekjafarian, Eugene J. OBrien, Paraic Quirke, Daniel Cantero and Fatemeh Golpayegani
This paper presents an innovative numerical framework for railway track monitoring using acceleration measurements from sensors installed on a passenger train. A numerical model including a 10 degrees of freedom train passing over a three-layer track is ...
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Alessio Nicosia, Francesco Giuseppe Carollo and Vito Ferro
Flow resistance in gravel-bed channels is not only affected by the shape and size of the roughness elements, but also by their arrangement on the channel bed surface (position to flow streamlines, spacing between elements, and their protrusion from the c...
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