Review of reactive magnesia-based cementitious materials: Current developments and potential applicability

2021 ◽  
Vol 40 ◽  
pp. 102342
Author(s):  
Yongshan Tan ◽  
Chengyou Wu ◽  
Hongfa Yu ◽  
Ying Li ◽  
Jing Wen
Keyword(s):  
Cementitious Materials ◽  
Potential Applicability ◽  
Reactive Magnesia

Characteristics of the Frequency-Following Response to Speech in Neonates and Potential Applicability in Clinical Practice: A Systematic Review

2020 ◽  
Vol 63 (5) ◽  
pp. 1618-1635
Author(s):  
Céline Richard ◽  
Mary Lauren Neel ◽  
Arnaud Jeanvoine ◽  
Sharon Mc Connell ◽  
Alison Gehred ◽  
...  
Keyword(s):  
Systematic Review ◽  
Cochrane Library ◽  
Neurodevelopmental Outcomes ◽  
Frequency Following Response ◽  
Ovid Medline ◽  
Published Evidence ◽  
Mesh Terms ◽  
Potential Applicability ◽  
Clinical Potential

Purpose We sought to critically analyze and evaluate published evidence regarding feasibility and clinical potential for predicting neurodevelopmental outcomes of the frequency-following responses (FFRs) to speech recordings in neonates (birth to 28 days). Method A systematic search of MeSH terms in the Cumulative Index to Nursing and Allied HealthLiterature, Embase, Google Scholar, Ovid Medline (R) and E-Pub Ahead of Print, In-Process & Other Non-Indexed Citations and Daily, Web of Science, SCOPUS, COCHRANE Library, and ClinicalTrials.gov was performed. Manual review of all items identified in the search was performed by two independent reviewers. Articles were evaluated based on the level of methodological quality and evidence according to the RTI item bank. Results Seven articles met inclusion criteria. None of the included studies reported neurodevelopmental outcomes past 3 months of age. Quality of the evidence ranged from moderate to high. Protocol variations were frequent. Conclusions Based on this systematic review, the FFR to speech can capture both temporal and spectral acoustic features in neonates. It can accurately be recorded in a fast and easy manner at the infant's bedside. However, at this time, further studies are needed to identify and validate which FFR features could be incorporated as an addition to standard evaluation of infant sound processing evaluation in subcortico-cortical networks. This review identifies the need for further research focused on identifying specific features of the neonatal FFRs, those with predictive value for early childhood outcomes to help guide targeted early speech and hearing interventions.

On the use of nanoindentation for cementitious materials

10.1617/14020 ◽  
2003 ◽  
Vol 36 (257) ◽  
pp. 191-196 ◽  
Author(s):  
G. Constantinides
Keyword(s):  
Cementitious Materials

Classroom Observation for the Professional Development of Myanmar University Lecturers in a Singapore Cross-Cultural Context: Perception of Abilities and Learning Based on ‘Nine Events of Instruction’

2018 ◽  
Vol 5 (2) ◽  
pp. 40-49
Author(s):  
Siew Hong Lam
Keyword(s):  
Professional Development ◽  
Cultural Context ◽  
Classroom Observation ◽  
Continuing Professional Development ◽  
Educational Background ◽  
Cross Cultural ◽  
Lessons Learned ◽  
Potential Applicability ◽  
Pedagogical Framework ◽  
Events Of Instruction

Abstract Continuing professional development is important for improving and reforming teaching.Classroom observation of others’ teaching has been used for the professional development of eight lecturers from three Myanmar universities who visited the Department of Biological Sciences, National University of Singapore over a period of three weeks.To bridge the socio-cultural and educational background differences, Gagné’s ‘Nine events of instruction’ was used as a pedagogical framework to guide and evaluate the classroom observation and learning as it is well-established for instructional design and resonate well with educators.This study aimed to evaluate the participants’ abilities and their learning through classroom observation based on their perceptions of the ‘nine events of instruction’.The study found that most of the participants have positive views of their abilities in relation to the ‘nine events’, especially in practicing the early events of instruction. The classroom observation has benefitted them with respect to the ‘nine events’, particularly ‘Informing the Students of the Objective/Outcome’, ‘Stimulating Recall of the Prior Knowledge’ and ‘Presenting Information/Content/Stimulus’.Notably, ‘Assessing Performance’ was the most perceived ‘event of instruction’ that the participants wanted to improve on and that the participants perceived will benefit Myanmar lecturers the most.Qualitative feedbacks by the participants revealed lessons learned, their potential applicability and desires to reform and share.The study further demonstrated that the ‘nine events of instruction’ is a useful pedagogical framework for guiding and evaluating perception of abilities and learning in classroom instruction and observation for continuing professional development in a cross-cultural context.

Effect of ground granulated blast funrnace slag and fly ash on strength, permeability, and under-water abrasion of fine-grained concrete

2020 ◽  
Vol 71 (7) ◽  
pp. 775-788
Author(s):  
Quyet Truong Van ◽  
Sang Nguyen Thanh
Keyword(s):  
Fly Ash ◽  
Concrete Strength ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Chloride Permeability ◽  
Cement Replacement ◽  
Fine Grained ◽  
Granulated Blast Furnace Slag ◽  
Compressive Strength Test ◽  
Economic Ground

The utilisation of supplementary cementitious materials (SCMs) is widespread in the concrete industry because of the performance benefits and economic. Ground granulated blast furnace slag (GGBFS) and fly ash (FA) have been used as the SCMs in concrete for reducing the weight of cement and improving durability properties. In this study, GGBFS at different cement replacement ratios of 0%, 20%, 40% and 60% by weight were used in fine-grained concrete. The ternary binders containing GGBFS and FA at cement replacement ratio of 60% by weight have also evaluated. Flexural and compressive strength test, rapid chloride permeability test and under-water abrasion test were performed. Experimental results show that the increase in concrete strength with GGBFS contents from 20% to 40% but at a higher period of maturity (56 days and more). The chloride permeability the under-water abrasion reduced with the increasing cement replacement by GGBFS or a combination of GGBFS and FA

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