Results 21 to 30 of about 96,238 (262)

Influences of VTMS/SiO2 ratios on the contact angle and morphology of modified super-hydrophobic silicon dioxide material by vinyl trimethoxy silane

Results in Physics, 2018
Vinyl trimethoxy silane (VTMS) was used as a modifier and strong ammonia was used as a pH regulator to prepare modified SiO2 superhydrophobic composites. VTMS was successfully in-situ grafted onto the surface of SiO2 via chemical modification.
Chuang Wang, Hui Yang, Fei Chen, Lei Peng, Hong-fang Gao, Li-ping Zhao   +5 more
doaj   +1 more source

Polyethylene Terephthalate Composite Films with Enhanced Flame Retardancy and Gas Barrier Properties via Self-Assembly Nanocoating

Nanomaterials, 2023
The flammability and gas barrier properties are essential for package material. Herein, a highly-oriented self-assembly nanocoating composed of polyvinyl alcohol (PVA) and montmorillonite (MMT) was prepared for endowing polyethylene terephthalate (PET ...
Tao Zou, Lei Kang, Dongqiao Zhang, Jieyi Li, Zefeng Zheng, Xiaohong Peng   +5 more
doaj   +1 more source

Study on vibration-reduction performance of water-lubricated stern bearing with fluid-saturated perforated slab

Zhongguo Jianchuan Yanjiu, 2019
[Objectives]As the first element to support the shaft and transfer the vibration, water-lubricated stern bearing becomes an important part of ship shafting.
Jin Yong, Kuang Junxin, Tian Xiangyu, Lao Kunsheng, Ouyang Wu, Liu Zhenglin   +5 more
doaj   +1 more source

The instability mechanism of shallow tunnel entrances in silty clay strata and corresponding remediation strategies

KSCE Journal of Civil Engineering
The stability of weak surrounding rock at shallow mountain tunnel entrances poses significant challenges. This study investigates the collapse mechanism of the silty-clay layer at the entrance of the Dajin No 1 Tunnel using an integrated approach ...
Bo Yan, Lei Kang, Wenqiang Wang, Ze Mei, Yongwei Wang, Jingyi Liu, Xinjin Zhang, Wenmin He   +7 more
doaj   +1 more source

Flexural Behavior of the Innovative CA-UHPC Slabs with High and Low Reinforcement Ratios

Advances in Materials Science and Engineering, 2019
This paper presents an experimental study on the flexural behavior of an innovative CA-UHPC (ultrahigh-performance concrete containing coarse aggregate) slab with high and low reinforcement ratios. A total of eighteen CA-UHPC slabs were tested to failure
Yu Feng, Jianan Qi, Jingquan Wang, Jiaping Liu, Jianzhong Liu   +4 more
doaj   +1 more source

Nanostructured high-performance concretes based on low-strength aggregates

Magazine of Civil Engineering, 2022
In the modern world, construction is often located in remote and hard-to-reach regions, where there are no acceptable quality aggregates for concrete. The transportation of high-quality aggregates leads to a significant increase in the cost of concrete ...
Rassokhin Aleksandr, Ponomarev Andrey, Karlina Antonina   +2 more
doaj   +1 more source

Directional Diffusion Probabilistic Modelling With Fuzzy Similarity Fields for Multipolarized Petrographic Registration

Modelling and Simulation in Engineering
Accurate registration of multipolarized petrographic thin-section images is essential for quantitative characterization of rock microstructures under plane-polarized and cross-polarized illumination.
Wenqiang Wang, Bowei Chen, Bo Yan, Xin Chen, Wenmin He, Yongwei Wang, Lei Peng, Andong Wang   +7 more
doaj   +1 more source

The radiation protection and high temperature performance of serpentine-magnetite mixed concrete

Case Studies in Construction Materials
In this paper, the high density of magnetite and the high crystal water content of serpentine are used to configure concrete with high temperature resistance, gamma ray shielding and neutron shielding properties, and adjust the proportion of magnetite ...
Zhenfu Chen, Yangzi Li, Qiongfang Wu, Lincheng Luo, Liping Xie, Du Deng, Dan Wu   +6 more
doaj   +1 more source

Influences of surface modification of nano-silica by silane coupling agents on the thermal and frictional properties of cyanate ester resin

Results in Physics, 2018
The surface of nano-silicon dioxide (nano-SiO2) particles was modified by small molecular coupling agent KH-560 and macromolecular coupling agent SEA-171, respectively, to change the surface activity and structure.
Wang Chuang, Jiao Geng-sheng, Peng Lei, Zhu Bao-lin, Li Ke-zhi, Wang Jun-long   +5 more
doaj   +1 more source

Animal‐Assisted Activities With Therapy Dogs in Pediatric Oncology: A Multicenter Survey of the Current Status, Implementation, and Challenges in Germany, Austria, and Switzerland

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Animal‐assisted activities (AAAs) with therapy dogs have shown positive effects on patient well‐being and quality of life in various areas of medicine, including pediatric oncology. However, research on this topic is limited. The aim of this study is to present the current status of AAA in pediatric oncology in Germany, Austria, and
Jan‐Marius Wedig, Birgit Burkhardt, Christof M. Kramm, Kira Ostermann, Sarah C. Goretzki, Uta Dirksen, Nico Kurpiers, Michael M. Schündeln   +7 more
wiley   +1 more source