Results 21 to 30 of about 687,321 (293)

Nimble in a pandemic: Lessons learned from Concrete Jungle’s Grocery Delivery Program

open access: yesJournal of Agriculture, Food Systems, and Community Development, 2021
First paragraph: As a leader in Atlanta’s fresh produce supply chain for people with limited access to fruits and vegetables, Concrete Jungle (CJ) has established a robust network of partnerships with food and social service community organizations to
Rachel Blacher, Nichole Fields-Kyle
doaj   +1 more source

Behaviour of reinforcement in drop tower beam tests [PDF]

open access: yesMATEC Web of Conferences, 2020
Drop tower tests help to gain understanding about the general behaviour of reinforced concrete members under impact loading and to analyse strains and strain rates occurring within their reinforcement.
Leicht Lena   +3 more
doaj   +1 more source

Concept and development of a steel–bamboo SI (skeleton–infill) system: experimental and theoretical analysis

open access: yesJournal of Wood Science, 2019
A steel–bamboo SI (skeleton–infill) system with steel frame as the skeleton and bamboo box as the filler is proposed, which realizes the requirements of building assembly and sustainable development.
Qingfang Lv, Yi Ding, Ye Liu
doaj   +1 more source

Frequency-Based Cable Tension Identification Using a Nonlinear Model with Complex Boundary Constraints

open access: yesShock and Vibration, 2023
Accurate estimation of the cable force affects the bridges’ long-term integrity and serviceability directly. The frequency method is often used for cable tension testing in bridge engineering.
Wen-ming Zhang, Zhi-wei Wang
doaj   +1 more source

The connection performance and bearing capacity of a single-layer combined lattice shell with aluminium alloy honeycomb panels

open access: yesCase Studies in Construction Materials, 2022
To take full advantage of the lightweight and high strength characteristics of aluminium alloy honeycomb panels and to overcome the shortcoming of the low elastic modulus of the aluminium alloy lattice shell, the present study proposes a new aluminium ...
Caiqi Zhao   +5 more
doaj   +1 more source

Concrete Fibrations [PDF]

open access: yesNotre Dame Journal of Formal Logic, 2017
As far as we know no notion of concreteness for fibrations exists. We introduce such a notion and discuss some basic results about it.
openaire   +4 more sources

‘Concrete’ Manipulatives, Concrete Ideas [PDF]

open access: yesContemporary Issues in Early Childhood, 2000
The notion of ‘concrete,’ from concrete manipulatives to pedagogical sequences such as ‘concrete to abstract,’ is embedded in educational theories, research, and practice, especially in mathematics education. In this article, the author considers research on the use of manipulatives and offers a critique of common perspectives on the notions of ...
openaire   +1 more source

Research on Experimental and Numerical Methods for Mechanical Properties of Lightweight Hollow Precast Utility Tunnels

open access: yesBuildings, 2022
In this paper, the mechanical properties of hollow precast utility tunnels are studied by experimental and numerical methods. Through full-scale experiments, the failure modes of ordinary and hollow utility tunnels are studied, and the failure stages of ...
Yutao Feng, Weibin Li, Nan Lu
doaj   +1 more source

Umbilical Concretion

open access: yesJournal of Radiology Case Reports, 2011
Umbilical concretion is a rarely encountered benign entity. Concretions typically form within an umbilical cleft which is unusually deep and consist of keratinaceous and sebaceous material. Lack of attention to umbilical hygiene usually plays a role in their formation.
David, Sheehan   +2 more
openaire   +2 more sources

Structural behavior analysis of a continuous steel truss arch railway bridge integrating monitoring data

open access: yesAdvances in Mechanical Engineering, 2016
Using theoretical modeling combined with monitoring data, the typical dynamic and static behaviors of a continuous steel truss arch railway bridge are evaluated.
Yong-sheng Song   +5 more
doaj   +1 more source

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