This research investigates changes in the nanostructure and the nanoscale local mechanical properties of cement paste with microand nano-modifiers. Silica fume and multiwall carbon nanotubes (MWCNTs) were used as microand nano-modifiers. An effective method of dispersing CNTs in cement matrix was developed. A detailed study on the effects of CNTs concentration and aspect ratio on the fracture p...

Cordless retraction paste material for gingival retraction in implant dentistry has recently become of interest to the clinician. However, few studies have been conducted on the use of retraction pastes and their possible interaction with implant surfaces. This in vitro study evaluated the effect of a cordless retraction paste material, Expasyl® (Acteon), on TiUnite® (Nobel Biocare) implant sur...

We have designed a tool called Recent Shortcuts, which helps manage coordination by making recently used objects easily accessible. Recent Shortcuts enables quick access to files, file folders, received attachments, people, and groups of people that the user interacted with recently for re-use in the user’s current context. The design of Recent Shortcuts was informed by an empirical study of te...

Following Roz Ivanič’s influential work on writing and identity, this chapter explores the effects of information technology in the writing of research and on the identity of the researcher. In particular, it suggests that the facility to copy, cut and paste is undermining the notion that research texts making original contributions to knowledge. By contrast, this capacity to copy, cut and past...

Objective The antimicrobial effect of ultrasonic agitation of calcium hydroxide (CH) pastes in infected bovine dentin and their penetrability were evaluated using confocal laser scanning microscopy (CLSM) and microbiological culture. Material and Methods Fifty-two bovine teeth were infected with Enterococcus faecalis using a new contamination protocol; then they received CH paste and were div...

Lutein, a type of xanthophyll, possesses antioxidative properties that contribute to the prevention of various diseases. Preliminary screening has shown that Japanese mugwort (Artemisia princeps Pamp.) contains high amounts of lutein. In this study, we evaluated the lutein concentration in a processed mugwort product (mugwort paste). By using high-performance liquid chromatography coupled with ...

We investigated single application of pastes containing a surface reaction-type pre-reacted glass-ionomer (S-PRG) filler on enamel demineralization. Human enamel blocks were polished using pastes containing S-PRG filler (0, 5, and 30%) and immersed in demineralizing solution for 5 days with daily change of solutions. The pH measurement and nanoindentation testing was carried out during the imme...

Implementation of clean mining technology at coal mines is crucial to protect the environment and maintain balance among energy resources, consumption, and ecology. After reviewing present coal clean mining technology, we introduce the technology principles and technological process of paste backfill mining in coal mines and discuss the components and features of backfill materials, the constit...

et al. Randomized clinical trial of three-layer paste and four-layer bandages for venous leg ulcers. Q Are 3 layer paste bandages as effective as 4 layer bandages for healing of venous leg ulcers? METHODS Design: randomised controlled trial. Setting: a hospital leg ulcer outpatient clinic in London, UK. Patients: 133 patients (56% men) with venous leg ulcers. Exclusion criteria: arterial diseas...

The repair of craniofacial bone defects is surgically challenging due to the complex anatomical structure of the craniofacial skeleton. Current strategies for bone tissue engineering using a preformed scaffold have not resulted in the expected clinical regeneration due to difficulty in seeding cells into the deep internal space of scaffold, and the inability to inject them in minimally invasive...