Results 31 to 40 of about 1,813 (182)

A Study on Occupancy and Compressive Strength of Concrete with Produced Injection Method

Advances in Materials Science and Engineering, Volume 2014, Issue 1, 2014., 2014
Concrete is a composite construction material made primarily of aggregate, cement, and water. Fresh concrete must have certain features. These are shown in durability, workability, compressive strength, flexural strength, shrinkage, impact resistance, wear, and so forth.
Cevdet Emin Ekinci, Omer Kelesoglu, Ying Li   +2 more
wiley   +1 more source

CIMENTOS RESINOSOS

Revista Fluminense de Odontologia, 2019
Resumo Cimentos resinosos assemelham-se as resinas compostas e possuem fase inorgânica e orgânica. O componente orgânico é formado por matriz de resina, sendo constituído pelo bisfenol glicidil metacrilato (BIS-GMA) ou pelo uretano di-metacrilato (UDMA) ou pelo Trietileno Glicol Dimetacrilato (TEGDMA).
openaire   +2 more sources

Comparative Biocompatibility of Portland‐Based Endodontic Cements Containing Niobium and/or Bismuth Oxides in Rat Subcutaneous Tissue

BioMed Research International, Volume 2026, Issue 1, 2026.
Objectives To evaluate the in vitro cytocompatibility and osteogenic potential and the in vivo biocompatibility of two experimental endodontic cements based on Portland cement combined with either Nb2O5 (F6) and/or bismuth oxide (F7) in a rat subcutaneous implantation model. Methods For the in vitro study, MC3T3‐E1 preosteoblastic cells were exposed to
Raphael Victor Silva Andrade, Rafaela Alcindo Silva de Souza Fé, Vladimir Galdino Sabino, Carlos Augusto Galvão Barboza, Maria Luiza Diniz de Sousa Lopes, Nizyara Costa da Silva, Valkleidson Santos de Araujo, Amanda Silveira da Silva, Raimundo Fernandes de Araujo Junior, Naianne Kelly Clebis, Isadora Luisa Gomes da Silva, Pedro Catalão Moura, Sofia Pessanha, Aurigena Antunes de Araújo, Baisakhi Banerjee   +14 more
wiley   +1 more source

Comparative Analysis of Selected Physicochemical Properties of Pozzolan Portland and MTA‐Based Cements

International Scholarly Research Notices, Volume 2014, Issue 1, 2014., 2014
Physicochemical properties of pozzolan Portland cement were compared to ProRoot MTA and MTA BIO. To test the pH, the samples were immersed in distilled water for different periods of time. After the pH analysis, the sample was retained in the plastic recipient, and the electrical conductivity of the solution was measured. The solubility and radiopacity
Maura Cristiane Gonçales Orçati Dorileo, Ricardo Dalla Villa, Orlando Aguirre Guedes, Andreza Maria Fábio Aranha, Alex Semenoff-Segundo, Matheus Coelho Bandeca, Alvaro Henrique Borges, Antonio Tilocca   +7 more
wiley   +1 more source

The Lock‐In Effect on ESG and Business Performance Relationship: A Critical Examination and Meta‐Analysis

Corporate Social Responsibility and Environmental Management, Volume 32, Issue 5, Page 6912-6936, September 2025.
ABSTRACT This study investigates whether the issues previously addressed in the literature regarding business performance persist when applying ESG practices. A literature review identified 252 effects, followed by a meta‐analysis with subgroup analysis. The lock‐in theory and corporate reputation were employed to understand this relationship. The lock‐
Jéssica Alessandra Mendonça, Fabíola Renata Alves Roberto, Dalton Alexandre Kai, Guilherme Brittes Benitez   +3 more
wiley   +1 more source

Effect of Zirconium Oxide and Zinc Oxide Nanoparticles on Physicochemical Properties and Antibiofilm Activity of a Calcium Silicate‐Based Material

The Scientific World Journal, Volume 2014, Issue 1, 2014., 2014
The aim of the present study was to evaluate the antibiofilm activity against Enterococcus faecalis, compressive strength. and radiopacity of Portland cement (PC) added to zirconium oxide (ZrO2), as radiopacifier, with or without nanoparticulated zinc oxide (ZnO). The following experimental materials were evaluated: PC, PC + ZrO2, PC + ZrO2 + ZnO (5%),
Juliane Maria Guerreiro-Tanomaru, Adinael Trindade-Junior, Bernardo Cesar Costa, Guilherme Ferreira da Silva, Leonardo Drullis Cifali, Maria Inês Basso Bernardi, Mario Tanomaru-Filho, Cornelis H. Pameijer   +7 more
wiley   +1 more source

Desempenho do Concreto com Pó de Vidro e Aditivo Plastificante

RCT: Revista de Ciência e Tecnologia
O estudo avaliou a substituição parcial do cimento Portland CP IV – 32 RS por pó de vidro lapidado, com aditivo plastificante, visando reduzir emissões de CO₂ e melhorar a resistência do concreto. Foram testados blocos com 0%, 3%, 5% e 7% de substituição
Dellane Stephani Carvalho dos Santos, Jullie Anne da Silva Sampaio   +1 more
doaj   +1 more source

An injector testbed based on a direct current gun and an interchangeable very high frequency gun for superconducting continuous‐wave free‐electron lasers

Journal of Synchrotron Radiation, Volume 32, Issue 4, Page 838-848, July 2025.
An injector testbed for continuous‐wave free‐electron lasers based on a direct current gun and an interchangeable very high frequency gun is under construction. Its physical design and performance have been studied carefully.The continuous‐wave free‐electron laser (CW‐FEL), based on superconducting radiofrequency (SRF) technology with an electron bunch
Xinmeng Li, Jitao Sun, Yong Yu, Jiahang Shao, Jiayue Yang, Quan Zhou, Hongli Ding, Lei Shi, Kai Tao, Chenglin Guo, Zhigang He, Zhichao Chen, Zhen Chen, Shaohua Peng, Hongfei Wang, Guoqing Zhang, Baichao Zhang, Zongbin Li, Feng Zhao, Wei Wei, Maomao Huang, Wei Wang, Ming Liu, Chaofeng He, Liangbing Hu, Yaqiong Wang, Han Li, Weiming Yue, Xilong Wang, Guorong Wu, Dongxu Dai, Weiqing Zhang, Xueming Yang   +32 more
wiley   +1 more source

Cam Tozu ve Uçucu Kül Katkılı Harçların Zamana Bağlı Elektriksel Özdirenç ve Mekanik Özelliklerinin İncelenmesi

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2022
Mineral katkılar, çimento esaslı kompozitlerin bazı özelliklerini iyileştirmek ve çimento miktarını azaltmak için beton karışımında kullanılmaktadır. Kullanılan çimento miktarının azaltılması ile çevre kirliliğinin ve çimento üretimi sırasındaki yüksek ...
Turhan Can Karcı, Emriye Çınar Resuloğulları, Atahan Dönmez, Behcet Dündar   +3 more
doaj   +1 more source

Fracture and Damage Analysis of Cement‐Stabilized Fine and Coarse Grain Soils Under Static and Cyclic Loading Using Chevron‐Notched SCB Specimen

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 6, Page 2708-2724, June 2025.
ABSTRACT Fracture toughness and cohesive fracturing properties of two classes of sandy‐clay soils, (A) with fine and (B) coarse grains and stabilized with low (2%) and high (10%) cement (as soil stabilizer), were investigated using a chevron‐notched semicircular bend (CN‐SCB) sample under static and cyclic loads.
Nazife Erarslan, M. R. M. Aliha
wiley   +1 more source