Results 111 to 120 of about 15,657 (289)

APPRAISAL OF USED WOODEN RAILWAY SLEEPER [PDF]

Journal of Engineering Science and Technology, 2008
Replacement of wooden sleepers to prestressed concrete sleepers has marked as advancement in the railway sleepers industry in Malaysia. Despite superiority of these man-made composite sleepers, wooden sleepers still lead in terms of track performance ...
SITI HAWA HAMZAH, KHAFILAH DIN
doaj  

Asymptotic tracking control of dynamic reference over homomorphically encrypted data with finite modulus

Automatica
This paper considers a tracking control problem, in which the dynamic controller is encrypted with an additively homomorphic encryption scheme and the output of a process tracks a dynamic reference asymptotically. Our paper is motivated by the following problem: When dealing with both asymptotic tracking and dynamic reference, we find that the control ...
Shuai Feng, Junsoo Kim
openaire   +2 more sources

Fly Ash-Based Stabilizer Sampling in Railway Track Bed and Determination of Young's Modulus

Inżynieria Mineralna, 2015
This paper deals with the investigation of the fly ash-based stabilizer used as a layer in railway track bed. It is a “new” material in railway structures. The main purpose of stabilizer is to reinforce railway track bed. The above mentioned fly ash-based stabilizer is a mixture consists of fly ash from Chvaletice plant in the Czech Republic, FGD ...
Martin LIDMILA, Vít LOJDA
openaire   +1 more source

Long‐Term Hydrophilic, Anti‐Clotting, and Anti‐Fibrotic Dynamic Covalent Silicone‐Based Biomaterials

Advanced Healthcare Materials, EarlyView.
Dynamic covalent crosslinking of a Schiff‐base silicone elastomer with hydrazide‐functionalized polymers is demonstrated to improve the long‐term hydrophilicity as well as the anti‐fouling and anti‐clotting properties of PDMS implants. The hydrazone‐functionalized material prevents hydrophobic recovery, resists clotting, and significantly reduces ...
Norma A. Garza Flores, Eva Mueller, Robert Bui, James C. Fredenburgh, Ruiqi Yin, Rawaa Hussain, Rida A. Malik, Thomas Kalab, Dabeer Abdul‐Azeez, Fei Xu, Michael Brook, Jeffrey I. Weitz, Todd Hoare   +12 more
wiley   +1 more source

Influence of Ballast and Sub-Ballast Thickness on Structural Behavior of Heavy-Haul Railway Platform Determined by Using Finite Element Modeling

Construction Materials
This study investigates the influence of ballast and sub-ballast thicknesses on the structural behavior of a heavy-haul railway platform by using finite element modeling with SysTrain software (v.
Magdiel Acaz de Oliveira Teixeira, William Wilson dos Santos, Lisley Madeira Coelho, Lidiane Hellen dos Santos Santana, Fábio Grisolia de Ávila, Sergio Neves Monteiro, Antônio Carlos Rodrigues Guimarães   +6 more
doaj   +1 more source

Natural Biomaterials for Osteochondral Repair: From Source to Strategy

Advanced Healthcare Materials, EarlyView.
Biological origin‐guided overview of natural biomaterials and therapeutic strategies for osteochondral tissue engineering. The circular diagram categorizes representative materials and strategies into plant/algae‐derived, microbial‐derived, animal‐derived, and human‐derived sources, centered on an osteochondral defect repair model.
Hengyu Liu, Hanyang Zhang, Wenbo Yang, Hao Chen, Jincheng Wang, Fei Chang   +5 more
wiley   +1 more source

Young’s modulus variation with azimuth for fracture-orientation estimation

, 2018
This study focuses on developing a pragmatic and robust method in the estimation of fracture orientation assuming a single set of aligned fractures. The Young’s modulus in the direction of fracture orientation is larger than that in the perpendicular ...
Qianhao Sun, Chunpeng Li, Xingyao Yin, Zhaoyun Zong   +3 more
core   +1 more source

Simulation of vertical dynamic vehicle–track interaction using a three-dimensional slab track model

, 2020
When improving track design, a better understanding of the track\u27s damage modes is needed, and the railway industry is then dependent on the availability of accurate simulations of the dynamic vehicle–track interaction.
Nielsen, Jens, Aggestam, Emil
core   +1 more source

Microsphere‐Templated Conductive Syntactic Foams for Recyclable and Additively Manufactured Soft Electronics

Advanced Healthcare Materials, EarlyView.
This work introduces a microsphere‐templated strategy to fabricate reprocessable PEDOT:PSS syntactic foams with tunable porosity, stable conductivity, and 3D printability. In situ PEDOT:PSS coatings create a conductive network that maintains electrical performance at high void fractions.
Gayaneh Petrossian, Yassine Diouri, Bolan Xu, Sara Ebrahimi, Atharva Pande, Floriane Miquet‐Westphal, Hang Xu, Fabio Cicoira   +7 more
wiley   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source