Results 71 to 80 of about 193,077 (185)

Colourful Urban Birds: Bird Species Successful in Urban Environments Have More Elaborate Colours and Less Brown

open access: yesEcology Letters, Volume 28, Issue 4, April 2025.
Urban bird communities are more colour‐diverse after accounting for species richness. We also found that bird species that do well in urban environments are less likely to be brown and exhibit more elaborate colours, but not higher sexual dichromatism. ABSTRACT Rapidly expanding urbanisation presents significant challenges to wildlife.
Juan Diego Ibáñez‐Álamo   +4 more
wiley   +1 more source

Modified prediction approach of strength of high strength polyolefin fiber reinforced concrete corbels [PDF]

open access: yes, 2021
This paper aims to investigate the effect of polyolefin fibers on high strength reinforced concrete corbels using twelve specimens with different quantities of fibers and shear span-to-span ratios, all corbels were only tested vertically.
Ahmed, Mazen A.   +2 more
core   +2 more sources

Robustness of Dry‐Assembled Precast Wall and Coupled Wall‐Frame High‐Rise Structures With Voided Prestressed Slabs

open access: yesThe Structural Design of Tall and Special Buildings, Volume 34, Issue 1, January 2025.
ABSTRACT Precast concrete structures are recognized among the structural typologies that may mostly suffer from progressive collapse as a consequence of local unpredicted damage, also due to past accidents occurred in buildings employing old precast technologies neglecting the basic robustness criteria and characterized by poorly detailed and/or ...
Bruno Dal Lago   +2 more
wiley   +1 more source

Performance Analysis of Self‐Resetting Pier–Beam Node of Sheet–Pile Bridge Based on Vehicle–Bridge Coupling Vibration

open access: yesAdvances in Civil Engineering, Volume 2025, Issue 1, 2025.
To address the issue of excessive stress at the secondary pier–beam joints of multispan continuous sheet–pile bridges caused by large longitudinal displacements, this study proposes a novel structural configuration incorporating prestressed self‐resetting reinforcement at the pier–beam connection.
Xu Shizhan   +5 more
wiley   +1 more source

Standardisation Of Precast Concrete Members For Low-Rise Residential Framed Building [PDF]

open access: yes, 2002
Precast concrete technology has become an emerging trend in Malaysian Construction Industry. Hence, there is a niche in developing a set of standardised and optimised precast concrete elements as well as connections for a speedy, affordably and better
Heng, Chiang Chew
core  

Design and Construction of a Reconfigurable Pedestrian Structure [PDF]

open access: yes, 2016
The field of vibration serviceability of civil structures is becoming an increasingly important research area. There is a need to better understand the dynamics of these structures and how they interact with human occupants in terms of both their ...
Hudson, EJ, Reynolds, P
core   +1 more source

Finite Element Performance Assessment of RC Columns Strengthened With Hybrid NSM Steel and FRP Bars Subjected to Static and Repeated Loads

open access: yesModelling and Simulation in Engineering, Volume 2025, Issue 1, 2025.
A numerical finite element analysis has been investigated in this paper to examine the performance of strengthened reinforced concrete (RC) columns with near‐surface mounted (NSM) fiber‐reinforced polymer (FRP) and steel bars under static and repeated loads using the finite element software ABAQUS/Standard.
Nibras Atiaa Al-Shimarry, Marco Bonopera
wiley   +1 more source

Structural seismic performance of reinforced concrete block system for two storeys safe house [PDF]

open access: yes, 2016
Severe earthquakes in year 2004 had caused a destructive tsunami and killed more than 170,000 people in Aceh Indonesia. The disaster raises the public awareness and demand in safe house. This paper presented the structural failure behaviour, strength and
Marsono, Abdul Kadir, Yip, Chun Chieh
core   +2 more sources

Combining GPR, Passive Seismic, and Load Testing With Computational Models in the Assessment of Historical Bridges: The Case Study of the Comboa Bridge

open access: yesStructural Control and Health Monitoring, Volume 2025, Issue 1, 2025.
The preservation of historical bridges usually requires extensive structural evaluations for possible damage detection. Therefore, effective techniques are essential for diagnosis and, consequently, proper maintenance and rehabilitation actions. The combination of techniques provides complementary data that support decision making.
Vega Perez-Gracia   +8 more
wiley   +1 more source

Distributions of non‐native and native plants are not determined by the same environmental factors

open access: yesEcological Solutions and Evidence, Volume 5, Issue 4, October–December 2024.
Distributions of non‐native plant species are driven more strongly by anthropogenic variables than distributions of native plant species, though climate is the most powerful predictor in both species groups. Species distribution models should therefore be fitted with different variables based on the study species' degree of nativeness.
Bart Steen   +4 more
wiley   +1 more source

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