Results 111 to 120 of about 173,947 (311)

PENGARUH PENAMBAHAN KAPUR Ca(OH)2 TERHADAP KUAT TEKAN GEOPOLYMER MORTAR

, 2017
Kebutuhan akan beton semakin hari semakin meningkat. Semen merupakan material yang digunakan sebagai bahan pengikat bersama dengan agregat untuk membentuk beton dan mortar. Pembuatan semen akan menghabiskan sumber daya alam.Penelitian ini merupakan salah satu bagian dari usaha untuk mengembangkan geopolymer mortar yang mengandung Kapur Padam Ca(OH)2 ...
AISYAH AZIS, NURUL, Tjaronge, M.Wihardi, Djamaluddin, Abd.Rachman   +2 more
openaire   +1 more source

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

The Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx, Oliver Kersten, Youri van den Hurk, Brenna A. Frasier, Richard Sabin, Bastiaan Star, James H. Barrett   +6 more
wiley   +1 more source

Effect of crystalline admixture and superabsorbent polymer on the self-healing and mechanical properties of basalt fibre mortars

Journal of Asian Architecture and Building Engineering
This study investigated the effects of a crystalline admixture (CA) and superabsorbent polymer (SAP) on the self-healing and mechanical properties of basalt fibre mortars.
Hexiang Wu, Yunpeng Zhao, Xi Chen, Shuangxin Li, Ying Zhao, Quansheng Sun   +5 more
doaj   +1 more source

NiFe‐NO3 Layered Double Hydroxide as a Novel Anode for Sodium Ion Batteries

Batteries &Supercaps, Volume 8, Issue 3, March 2025.
This study demonstrates, for the first time, the effectiveness of using LDH as an anodic material in SIB. The material is stable and show high specific capacity, the reaction mechanism has been thoroughly investigated and comprehensively described and involves a phase change reaction followed by sodium intercalation.
Marco Fortunato, Angelina Sarapulova, Björn Schwarz, Anna Maria Cardinale, Sonia Dsoke   +4 more
wiley   +1 more source

Comparative Investigation of Three Mg Doping Strategies in NMC811 Cathodes for High‐Energy Density Lithium‐Ion Batteries

Batteries &Supercaps, EarlyView.
Magnesium (Mg) doping is explored as a stabilization strategy for high‐capacity LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes. Three doping routes are compared, revealing that solid‐state lithiation delivers the best cycling stability. Operando X‐ray diffraction and electrochemical dilatometry link reduced cation mixing and lattice stabilization to improved ...
Anna Kobets, Filipp Obrezkov, Xiangze Kong, Jouko Lahtinen, Tao Hu, Seyedabolfazl Mousavihashemi, Basit Ali, Ulla Lassi, Tanja Kallio   +8 more
wiley   +1 more source

A Decision Model for E-commerce-enabled Partial Market Exit [PDF]

, 2010
Struggling retail chains often try to recover profitability by closing some of their stores. The challenge in this strategy lies in determining how many stores to close, as store exit has implications for both the customers and the supply chain.
Bhatnagar, Amit, Syam, Siddhartha
core   +1 more source

Marine silicon for biomedical sustainability

BMEMat, EarlyView.
Schematic illustrating marine silicon for biomedical engineering. Abstract Despite momentous divergence from oceanic origin, human beings and marine organisms exhibit elemental homology through silicon utilization. Notably, silicon serves as a critical constituent in multiple biomedical processes.
Yahui Han, Zhibo Yang, Wei Xia, Chengtie Wu   +3 more
wiley   +1 more source

Solvent‐Driven Pore Engineering in Coffee‐Derived Activated Hydrochar: Implications for Post‐Combustion CO2 Capture

Carbon Energy, EarlyView.
Solvent washing of coffee‐ground hydrochars produces activated carbons with tunable pore sizes while maintaining surface area. Removing non‐polar contaminants enhances microporosity, increasing CO2 uptake by 40%. Moderate pore sizes (9–12 Å) yield optimal CO2:N2 selectivity, whereas smaller pores reduce selectivity due to stronger interactions between ...
Muhammad Irfan Maulana Kusdhany, Maryna Vorokhta, Kazunari Sasaki, Masamichi Nishihara, Stephen Matthew Lyth   +4 more
wiley   +1 more source

Silent Partners in the Mill: Unveiling the Role of Additives in Mechanochemical Synthesis

Chemistry – A European Journal, EarlyView.
Mechanochemistry offers a sustainable, solvent‐free alternative to traditional synthesis, often enhanced by additives in a process known as additive‐assisted grinding. This review discusses how various additives, including liquids, ionic solids, and advanced materials like ionic liquids and piezoelectric compounds, improve reaction efficiency ...
Johanna Breinsperger, Nika Podlesnik, Francesco Mele, Michael Schnürch   +3 more
wiley   +1 more source

Effects of nanoscale C-S-H seeds dispersed in PCE on rheological and early mechanical properties of mortar

Case Studies in Construction Materials
Calcium silicate hydrate (C-S-H) gel as one of the main hydration products in ordinary Portland cement, which was the main source of strength for cement-based materials.
Weisong Yin, Long Yan, Han Wu, YueJian Lu, Chaoyu Zhang, Haoxuan Zhong   +5 more
doaj   +1 more source