Revisiting factors contributing to the strength of cemented backfill support system:A review

This paper provides a review of the intrinsic and extrinsic factors affecting the uniaxial compressive strength(UCS)of cemented tailings backfill(CTB).The consideration is that once CTB is poured into underground stopes,its strength is heavily influenced by factors internal to the CTB as well as the surrounding mining environments.Peer-reviewed journal articles,books,and conference papers published between 2000 and 2022 were searched electronically from various databases and reviewed.Additional sources,such as doctoral theses,were obtained from academic repositories.An important finding from the review is that the addition of fibers was reported to improve the UCS of CTB in some studies while decrease in others.This discrepancy was accounted to the different properties of fibers used.Further research is therefore needed to determine the“preferred”fiber to be used in CTB.Diverging findings were also reported on the effects of stope size on the UCS of CTB.Furthermore,the use of fly ash as an alternative binder may be threatened in the future when reliance on the coal power declines.Therefore,an alternative cementitious by-product to be used together with furnace slag may be required in the future.Finally,while most studies on backfill focused on single-layered structures,layered backfill design models should also be investigated.

The Video-Making Project： Why Students Love It？

It has been proven that ICT （information and communication technologies） affect the teaching and learning of a language, be it positive or negative. One of the examples of ICT that is used to enhance learners＇ creativity is the use of video. Although the use of ICT is encouraged in the learning and teaching of a language, it is still minimally applied in UMS （University Malaysia Sabah）, especially in the teaching and learning of a language. In this study, video-making is used as one of the assessments to measure learners＇ proficiency in the target language, which in this case, the Spanish Language. The video-making project was found to be able to improve learners＇ communication skills and knowledge building capabilities, as well as enhances learners＇ interest in the learning of the Spanish Language. It is found that intrinsic and extrinsic motivations, nature of the course, lecturers＇ positive support as well as students＇ positive determination to obtain good grades are among the factors contributing to the students＇ positive performance in the Spanish Language.

Factors that influence adult neurogenesis as potential therapy

Adult neurogenesis involves persistent proliferative neuroprogenitor populations that reside within distinct regions of the brain.This phenomenon was first described over 50 years ago and it is now firmly established that new neurons are continually generated in distinct regions of the adult brain.The potential of enhancing the neurogenic process lies in improved brain cognition and neuronal plasticity particularly in the context of neuronal injury and neurodegenerative disorders.In addition,adult neurogenesis might also play a role in mood and affective disorders.The factors that regulate adult neurogenesis have been broadly studied.However,the underlying molecular mechanisms of regulating neurogenesis are still not fully defined.In this review,we will provide critical analysis of our current understanding of the factors and molecular mechanisms that determine neurogenesis.We will further discuss pre-clinical and clinical studies that have investigated the potential of modulating neurogenesis as therapeutic intervention in neurodegeneration.