Results 81 to 90 of about 2,100,756 (254)

Applications of Biomaterials in Separators for Secondary Batteries

Carbon Energy, EarlyView.
In this review, biomaterial‐based separators are reviewed as sustainable alternatives to conventional polyolefin‐based separators. For 12 different natural polymers, spanning from Protista, Plantae, and Animalia, viable strategies for synthesizing biomass‐based separators are described.
Jongyoung Choi, Sung Cik Mun, Yong‐Seok Choi, Jong Ho Won   +3 more
wiley   +1 more source

Perceived importance and didactic difficulty of chemistry education: Insights from Czech teachers

The Curriculum Journal, EarlyView.
Abstract This empirical study examines how chemistry teachers in lower and upper secondary schools in the Czech Republic evaluate the content of the chemistry curriculum, focussing on its perceived importance and didactic difficulty. Based on a quantitative survey (N = 146), the study provides insight into the pedagogical content knowledge of ...
Jitka Lorenzová, Blanka Jirkovská, Martin Čapek Adamec, Jan Havlík, Petr Holzhauser, Daniela Nováková, Karel Němejc   +6 more
wiley   +1 more source

Mechanical properties and spalling at elevated temperature of high performance concrete made with reactive and waste inert powders

Engineering Science and Technology, an International Journal, 2017
In this article, the efficiency of waste glass powder was investigated in enhancing the mechanical properties of concrete at high temperature. Chemical composition of this powder reveals that it plays good role as effective inert very fine material in ...
Msheer Hasan Ali, Youkhanna Zayia Dinkha, James H. Haido   +2 more
doaj   +1 more source

Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

Deep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang, Jiayu Peng, Hujun Li, Yuguo Ji, Shuobiao Li, Guokai Zhang   +5 more
wiley   +1 more source

Strengthening of Modified Reactive Powder Concrete Columns with CFRP

Jordan Journal of Civil Engineering, 2016
An experimental investigation was conducted to investigate the behavior of modified reactiveconcrete (MRPC) columns before and after strengthening with carbon fiber reinforced polymer (CFRP) sheetsjacketing under eccentric axial load. Twelve columns were tested up to failure, strengthened and retested toexamine strengthening efficiency and to evaluate ...
Mutaz Kadhim Madhlom, Mohammed Hashim Mohammed   +1 more
openaire   +2 more sources

Bio‐based tannin‐loaded layered double hydroxides in epoxy coatings for smart corrosion protection of steel in underground infrastructure

Deep Underground Science and Engineering, EarlyView.
This study presents a sustainable smart‐coating strategy for protecting underground steel infrastructures from chloride‐induced corrosion. Zinc‐aluminum layered double hydroxides (LDHs) and tannin‐loaded LDHs (LDH–TA) were incorporated into an epoxy matrix to provide both enhanced barrier properties and active, pH‐responsive inhibition.
Veerle Vandeginste, Xinyu Guo, Dawid Kasprzak, Yukun Ji   +3 more
wiley   +1 more source

Molecular Modification Strategies for CO2 Electroreduction to C2+ Products: Classifications, Mechanisms, Advances, and Perspectives

EcoEnergy, EarlyView.
This review comprehensively outlines molecular modification strategies for steering CO2 electroreduction toward C2+ products, including the classification of diverse molecular structures, elucidation of their roles in microenvironment regulation, dissection of C–C coupling pathway engineering, and forward‐looking perspectives on machine learning and ...
Lingling Peng, Hanwen Liu, Tianyou Peng
wiley   +1 more source

A Mixed‐Ligand Metal–Organic Framework Strategy to Construct High‐Density O/S‐Shelled Ag Nanoparticle Electrocatalysts for Syngas Modulation

EcoEnergy, EarlyView.
Mixed‐ligand Ag–triazole MOF precursors reconstruct into ligand‐shelled Ag nanoparticle electrocatalysts that retain detectable O/S‐derived interfacial species. By combining ligand‐ratio and potential control, the CO2‐to‐syngas output can be tuned across H2‐rich, near‐equimolar, and CO‐rich regimes.
Ren‐Feng Yang, Xu‐Dong Wu, Yu‐Die Zhang, Wei‐Peng Chen, Xiao‐Hui Li, Qi Zhou, Kai‐Zhong Zhang, Xian‐Yue Song, Hao‐Ran Chu, Hai‐Feng Zhang, Xiao‐Hong Xiong, Mian Li, Xiao‐Chun Huang   +12 more
wiley   +1 more source

Optimization of alkali-activated binder reactive powder concrete based on concept of packing density

Reactive powder concrete (RPC) stands as an ultra-high-performance concrete (UHPC), widely acknowledged for its exceptional strength and durability. However, the high carbon footprint of RPC is a concern due to its substantial reliance on Portland cement.
Ji, Haodong, Liu, Jin Cheng, Kwan, AKH, Ye, Hailong   +3 more
core   +1 more source

EXPERIMENTAL BEHAVIOR OF RPC HEMISPHERICAL DOMES UNDER CONCENTRATED LOAD AND SITTING ON FOUR SUPPORTS

Journal of Engineering and Sustainable Development, 2017
The main objective of the current research is estimating of the structure performance of reactive powder concrete hemispherical domes and the effects of the changing of its thickness and steel fiber ratio on structural behavior.
Mohammed M. Rasheed, Layth A. Al-Jaberi, Nadiyah Kherallah Abd   +2 more
doaj