Results 31 to 40 of about 1,701 (111)

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

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

PAZAR YÖNELİMİ-FİRMA PERFORMANSI İLİŞKİSİ: İMKB’YE KOTE FİRMALAR ÜZERİNDE BİR ARAŞTIRMA

Selçuk Üniversitesi Sosyal Bilimler Enstitüsü Dergisi, 2008
Bu çalışmada, firmaların rekabetinde önemli bir etken olarak görülen pazar yöneliminin temel boyutu olan müşteri odaklılığın firma performansıüzerindeki etkisi incelenmektedir.
Ali Danışman, Ertan Erkocaoğlan
doaj  

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

Characterization of ABS/PETG multi‐material composites 3D printed by print‐pause‐print method

Polymer Engineering &Science, Volume 65, Issue 5, Page 2353-2369, May 2025.
Print‐Pause‐Print: A Novel Approach for Multi‐Material 3D Printing of ABS/PETG Composites. Abstract Fused deposition modeling (FDM) method is a commonly used additive manufacturing technique in various industries. It is crucial that the parts produced using this method meet the necessary service conditions.
Busra Eyri, Okan Gul, Sinan Yilmaz, N. Gamze Karsli, Taner Yilmaz   +4 more
wiley   +1 more source

Efeito do tempo de cura na resistência e deformabilidade de um solo argiloso ligado com cimento

Geotecnia, 2023
Este trabalho apresenta os resultados laboratoriais de um solo argiloso ligado com cimento, utilizando um cimento Portland, CEM IV/A 32,5 R, adicionado nas percentagens de 8 % e 12 % em relação à massa seca do solo.
Teresa Santana, João Dias, Pedro Lamas
doaj   +1 more source

Mapping nut‐cracking in a new population of wild capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil

American Journal of Primatology, Volume 86, Issue 4, April 2024.
Capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil, customarily use hammerstones to crack open at least two species of palm nuts, macaúba and babaçu. We systematically surveyed stone tool use sites in this park, recording and measuring stone tools, processed foods, and available lithic resources.
Tiago Falótico, Tatiane Valença, Michele P. Verderane, Beatriz C. Santana, Giulia Sirianni   +4 more
wiley   +1 more source

Estudo da compatibilidade entre a madeira e as cascas de Eucalyptus grandis e cimento portland.

Ciência Florestal, 2010
As características dos painéis cimento-madeira podem ser prejudicadas em virtude da incompatibilidade química do cimento com alguns materiais lignocelulósicos que podem inibir a "pega" do cimento.
Fábio Akira Mori, Yústane Lerissa Veiga Lopes, Lourival Marin Mendes, João Vicente de Figueiredo Latorraca   +3 more
doaj   +1 more source

Avaliação físico-química de cimentos Portland produzidos no Brasil, via Fluorescência por raios-X e resistência mecânica

Semina: Ciências Exatas e Tecnológicas, 2020
O cimento Portland é o componente básico do concreto. A espectroscopia de fluorescência de raios X é uma técnica analítica estabelecida usada em fábricas de cimento em todo o mundo.
Dawilson Menna Junior, Victor Manuel Cardoso Figueiredo Balcão, Marco Vinicius Chaud, Marta Maria Duarte Carvalho Vila, Norberto Aranha, Valquiria Miwa Hanai Yoshida, Jose Martins de Oliveira Junior   +6 more
doaj   +1 more source

A educação ambiental e o uso do solo-cimento

Vértices, 2010
A sociedade precisa se conscientizar da necessidade de preservação e recuperação do meio ambiente, e é esse o papel da Educação Ambiental, quando divulga meios de preservação, leis e projetos referentes ao meio ambiente.
Martha Eleonora Venâncio Mignot Cordeiro, Patrícia Marluci da Conceição, Thiago Vicente Lima   +2 more
doaj   +1 more source