Results 71 to 80 of about 48,997 (276)

Microstructural Characteristics of Cement-Based Materials Fabricated Using Multi-Mode Fiber Laser [PDF]

open access: yes, 2020
Cement-based materials are the most prevalent construction materials, and the conventional cutting techniques are still mostly used for fabricating the materials.
Lee, Dongkyoung   +2 more
core   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

open access: yesAdvanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim   +5 more
wiley   +1 more source

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

open access: yesGeophysical Monograph Series, Page 191-228., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Steven C. Bergman   +2 more
wiley  

+1 more source

Research on Mechanical Properties of Silica Fume Cementitious Materials Excited by Wet Grinding Methods

open access: yesBuildings
Silica fume (SF) has been widely used in engineering; however, its densification during transportation reduces its original pozzolanic activity. This paper investigates the effects of wet grinding and chemical activation on the mechanical properties and ...
Canhao Zhao   +3 more
doaj   +1 more source

Geotechnical Properties of Expansive Soil Treated With Silica Fume [PDF]

open access: yesEngineering and Technology Journal, 2013
Problematic soils such as expansive soil are those clay soils which exhibited significant volume changes as results of soil moisture variation, when a dry mass of clay is allowed to absorb water, the effective size of particles increases and therefore ...
Zeena Waleed S. Abbawi
doaj   +1 more source

Sifat Rheology Semen Pasta Ditinjau Dari Campuran Material Penyusunnya Dan Penggunaan Superplasticizer [PDF]

open access: yes, 2014
Rheology merupakan salah satu tolak ukur yang baik untuk menentukan sifat dari beton segar seperti kelecakan, kepadatan, dan sifat air dalam beton. Rheology suatu campuran sangat dipengaruhi oleh ratio volume air dan powder (Vw/Vp), jumlah air dan jumlah
Antoni, A. (Antoni)   +3 more
core  

Addressing Bottlenecks to Achieve High‐Energy Sodium‐Ion Cells Using Tin Anodes

open access: yesAdvanced Energy Materials, EarlyView.
The challenges in coupling high voltage cathode with Sn‐alloying anode or in anode‐free cell, using glyme based electrolytes to realize high energy Na‐ion cells are reported. Surface protection strategy such as SnO coating on Sn or trapping the parasitic species from poisoning the anode, helps improving the cyclability, with ∼100% capacity retention ...
Parth Desai   +11 more
wiley   +1 more source

Characterizing the causes and consequences of calcium oxalate crystal presence in Vitis riparia

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Calcium oxalate biomineralization in plants is phylogenetically widespread and morphologically diverse, but the function of these inorganic crystals is an area of active debate. The variety of environmental conditions that produce the crystals, as well as the inconsistent evidence that they provide antiherbivore defense across plant ...
Carolyn D. K. Graham   +3 more
wiley   +1 more source

Effect of Steel Fiber and Silica Fume on Hardened Concrete Compressive and Flexural strength

open access: yesJournal of Engineering and Sustainable Development, 2015
Fiber reinforced concrete (FRC) may be defined as a composite materials made with Portland cement, aggregate, and incorporating discrete discontinuous fibers and silica fume.
Lina Abudel Salam
doaj  

The Effect of HCWA-PFA Hybrid Geopolymer Modification on the Properties of Soil

open access: yesMATEC Web of Conferences, 2014
This study investigated the performance of the properties of foamed concrete when replacing volumes of cement of 10%, 15% and 20% by weight. A control unit of foamed concrete mixture made with Ordinary Portland Cement (OPC) as well as samples containing ...
Hassian F.F., Cheah C.C.
doaj   +1 more source

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