Results 141 to 150 of about 2,081,195 (334)

Nonlinear regression modeling of swelling characteristics in cracked expansive soil: integrating crack, moisture, density, and load effect

open access: yesFrontiers in Materials
Expansive soils, known for their significant volume change with variations in moisture content, are widely distributed around the globe. Due to their swelling properties, expansive soils pose significant engineering challenges, especially in rapidly ...
Junkai Yao   +8 more
doaj   +1 more source

Vibration of the railway track-viaduct system under moving vehicles taking into account the interaction effect [PDF]

open access: yes, 2006
Vibration of the railway track-viaduct system under moving vehicles taking into account the interaction ...
Rebelo, C.   +2 more
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Winter Track Survey of the Amur Tiger (Panthera tigris altaica) in the Southwest Primorsky Province of Russia 俄罗斯滨海边疆区西南部东北虎 (Panthera tigris altaica) 冬季足迹调查

open access: yesWildlife Letters, EarlyView.
In the winter of 2021/2022, a winter track survey revealed 43–46 tigers (without cubs) in 5.4 thousand km2 of suitable habitats in the Southwest Primorsky Province of Russia. In the same period, a network of camera traps registered 54 adult/subadult tigers here.
Yury Darman, Dina Matiukhina
wiley   +1 more source

Design of Reconstruction of Railway Section Otrokovice - Vizovice Including Technology of Construction Works [PDF]

open access: yes, 2013
Úkolem práce je rekonstrukce regionální železniční jednokolejné trati Otrokovice – Vizovice v km 19,0 - 22,4. Práce obsahuje úpravu geometrických parametrů koleje a rekonstrukci železničního svršku.
Záruba, Jan
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A Case Report on Rehabilitation of the Asiatic Black Bear (Ursus thibetanus ussuricus) in the Wild 亚洲黑熊 (Ursus thibetanus ussuricus) 野外放归野化案例报告

open access: yesWildlife Letters, EarlyView.
Asiatic black bears in Russia face conservation threats such as habitat destruction and fragmentation, which exacerbate food shortages caused by crop failures. This study explores an innovative approach to rehabilitating bears that abandon hibernation in mid‐winter due to extreme exhaustion by providing supplemental food near their den sites.
Sergey A. Kolchin   +2 more
wiley   +1 more source

Numerical investigation of the behavior of approach slabs in transition zone of ballasted track to box culvert in high-speed railway lines [PDF]

open access: yesJournal of Structural and Construction Engineering, 2016
One of the most important issues in operation of high-speed railway tracks is avoiding to sudden variation of the track stiffness. Culverts and bridges are common areas which this problem is occurred along the railway lines.
Morteza Esmaeili   +2 more
doaj  

The effect of structural characteristics on electrical and physical properties of electrically conductive compositions based on mineral binders

open access: yesMATEC Web of Conferences, 2017
The present-day situation is such that industrial production, municipal economy, traffic, etc consume a continuously increasing amount of energy. As a result, the range of propagation of electric stray currents, including their appropriate potentials and
Pluhin Oleksiy   +4 more
doaj   +1 more source

Research related to vibrations from high speed railway traffic

open access: yes, 2008
We discuss here recent results from several research programmes related to dynamic aspects and vibrations induced by high speed railway traffic, developed at the computational mechanics group, within the “Escuela de Ingenieros de Caminos” of the ...
Gabaldón Castillo, Felipe   +1 more
core  

Reconstruction of Track Section Stará Paka-Trutnov in 82,886 -85,65 Section with Design of Technological Procedure of Works [PDF]

open access: yes, 2014
Úkolem práce je rekonstrukce železniční jednokolejné tratě 510A Trutnov hl. n. – Chlumec n. C. v km 82,886 – 85,65. Práce obsahuje geometrickou úpravu parametrů koleje a rekonstrukci železničního svršku.
Diblík, Milan
core  

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