Production and Strength Evaluation of Sandcrete Hollow Blocks Using Fine sand and Crushed Periwinkle shell by Oluwaseun Caleb AYESANMI, Olumide Elkanah AIYEWALEHINMI, Bamitale Dorcas OLUYEMI-AYIBIOWU

“…This research explores using Crushed Periwinkle Shell (CPWS) to partially replace fine sand. A 1:12 mix ratio was chosen for its cost-effectiveness and suitability for non-load bearing applications. …”
Get full text

Convection in a Rapidly Rotating Spherical Shell: Newton’s Method Using Implicit Coriolis Integration by Juan Cruz Gonzalez Sembla, Camille Rambert, Fred Feudel, Laurette S. Tuckerman

“…Numerical stability can be greatly improved by the implicit integration of the terms that are most responsible for destabilizing the numerical scheme. …”
Get full text

Ni3S2@MoO3@Co3O4@AMO/NF core–shell heterostructure for high performance alkaline overall water splitting by Jiabang Liang, Yu Liu, Zegao Wang, Yifan Jia, Zhao Ding, Liangjuan Gao

“…Abstract The urgent need for bi-functional high-performance non-noble metal-based catalysts for water splitting requires the integration of both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) together, which not only increases the energy efficiency but also reduces fabrication cost. However, most non-noble metal-based catalysts for OER are not stable under alkaline conditions, while HER shows poor kinetic performance under alkaline conditions, which prevents the water splitting from scale-up applications. …”
Get full text

Chaotic Mountain Gazelle Optimizer Improved by Multiple Oppositional-Based Learning Variants for Theoretical Thermal Design Optimization of Heat Exchangers Using Nanofluids by Oguz Emrah Turgut, Mustafa Asker, Hayrullah Bilgeran Yesiloz, Hadi Genceli, Mohammad AL-Rawi

“…The predictive results indicate that using water + SiO₂ instead of ordinary water as the refrigerant on the tube side of the heat exchanger reduces the total cost by 16.3%, offering the most cost-effective design among the configurations compared. …”
Get full text

Aplicación del Método de la Colonia de Hormigas Mixto a la optimización de intercambiadores de calor de tubo y coraza//Application of the Mixed Ant Colony Method to the optimizatio... by Maida Bárbara Reyes‐Rodríguez, Jorge Laureano Moya‐Rodríguez, Sergio Ramón Pérez‐León, Gonzalo Nápoles‐Ruiz

“…Among the most widely used equipment for heat transfer in the industry are the shell and tube heat exchangers. …”
Get full text

OSCILLATORY ROLL OF THE ROAD ROLLER WITH A DOUBLE SIDE PLATE by S. V. Saveliev, V. V. Dubkov, M. K. Shushubaeva, V. B. Permyakov

“…The quality of this process is influenced by the type and modes of application of external force from the seal. The most effective is the vibrating machines’ compaction, which have a wide range of control parameters. …”
Get full text

Behavioral Characteristics of Limnoperna fortunei under Different Light Conditions by MA Jun, TAO Ze-yi, WANG Ying-cai, WANG Zhang-peng, LI Tian-cui

“…[Results] The results of shell opening and adhesion behaviors of Limnoperna fortunei under different light intensities showed that with increasing light intensity, shell opening frequency and material exchange decreased. …”
Get full text

Influencing Factors on Oyster Recruitment and Performance Evaluation for Oyster Reef Restoration in Tianjin Coastal Zones by Yuxuan Zhao, Chen Yang, Bo Zhang, Yanping Li, Jianbo Tu, Fuxin Niu, Wenliang Kong, Zhiyun Wang, Xianhua Liu

“…Our results demonstrated that the shell string method was the most effective in the Dashentang subtidal zone, while the mesh bag method with oyster seeding was optimal in the Bagua Shoal intertidal zone. …”
Get full text

Comparison of Model Systems (M+)n·[CrX63−] and M3CrX6 + 18MX Based on Quantum-Chemical Calculations (X: F, Cl) by Vyacheslav Kremenetsky, Sergey Kuznetsov

“…On the basis of quantum-chemical calculations the most stable particle compositions are estimated in such model systems as (M+)n·[CrCl6] and M3CrCl6 + 18MCl (M = Na, K, and Cs). …”
Get full text

Investigating CXCR4 expression of tumor cells and the vascular compartment: A multimodal approach. by Marta Braga, Chee Hau Leow, Javier Hernandez Gil, Jin H Teh, Laurence Carroll, Nicholas J Long, Meng-Xing Tang, Eric O Aboagye

“…Several CXCR4-targeted therapies are currently under investigation, and with it comes the need for imaging agents capable of accurate depiction of CXCR4 for therapeutic stratification and monitoring. PET agents enjoy the most success, but more cost-effective and radiation-free approaches such as ultrasound (US) imaging could represent an attractive alternative. …”
Get full text

Formation of Innovative Environment in the Region as a Key Factor of the Implementation of Efficient Technologies by M. Ya. Veselovsky, A. A. Abdulvagapova

“…Conclusions and Relevance: by the beginning of the 21st century, after the end of military operations, the Chechen Republic was the most backward subject of Russia. Together with the outer shell of cities and villages, competitiveness, scientific potential, high-qualified personnel of the region were erased from the face of the earth. …”
Get full text

Role of hydrometallurgy and nanotechnology in environmental protection by Srećko Stopić, Bernd Friedrich

“…This work deals with nanoparticles of Ag, Cu and Cu and core-shell particles of RuO2/TiO2 formed by ultrasonic spray pyrolysis. …”
Get full text

Mechanochemical Preparation of Biomass-Derived Porous Carbons by Jerzy Choma, Barbara Szczęśniak, Mietek Jaroniec

“…., ordered mesoporous carbons, hierarchical porous carbons, porous carbon fibers, and carbon–metal composites) from tannins, lignin, cellulose, coconut shells, nutshells, bamboo waste, dried flowers, and many other low-cost biomass wastes. …”
Get full text

Optimizing the hydroxyapatite nanocrystals derived from biological sources to increasing efficiency and quality by Mahsa Abbasi, Hossein Derakhshankhah, Soheila Kashanian, Zhila Izadi, Mohammad Soleiman Beigi

“…Conclusion: One of the most effective methods for preparing hydroxyapatite involves conducting the reactions at the bottom; the ultrasonic method's affordability and cost-effectiveness are among its positive features, as it can generate multiple processes throughout the production process. …”
Get full text

Comprehensive method for evaluating results of ultrasonic testing of parts and components of rolling stock when adjusting the sensitivity for different reflectors by A. N. KIREEV, V. V. BYKADOROV, M. A. KIREEVA

“…Developed method is most relevant in the control of cast parts of railway rolling stock, since castings can be equally likely to contain bulk (pores, shells, nonmetallic inclusions, etc.) and planar discontinuities (cracks of different origin; flocks; segregations that lead to violation continuity, etc.). …”
Get full text