This paper reports on the effect of addition nano-calcium silicate hydrate (nano-CSH) seeds early-age strength development and microstructural evolution concrete containing high-volume fly ash (HVFA). Cement replacement levels 60% 70% are considered. For each levels, 0.5%, 1%, 1.5% mass (FA) replaced with nano-CSH crystals. The compressive was tested at ages 1, 3, 7, 14, 28 days. Microstructura...

Lithium (Li) doping is increasingly regarded as an effective modification for hydroxyapatite (HA) due to its excellent performances in osteogenesis. However, traditional method involving calcium, lithium and phosphorus salt (salt route) usually brought some unexpected ions, which could influence the properties of obtained materials largely. In present study, acid-base reaction (acid-base was ap...

Theoretical analysis and Computer simulations have proven to be cost-effective and powerful tools in scientific studies of materials, particularly at nano-scale where synthesis of nano-structures, interpretation of their observed character and exploration of new structures are not always straight forward. We present here fundamental principles of techniques used today for computational simulati...

R. Samur, Marmara University, Istanbul, Turkey; L. S. Özyegin, Marmara University, Istanbul; D. Ağaoğulları, Istanbul Technical University, Istanbul; F. N. Oktar, Marmara University, Istanbul; S. Agathopoulos, Ioannina University, Greece; C. Kalkandelen, Istanbul University, Istanbul; İ. Duman, Istanbul Technical University, Istanbul; B. Ben-Nissan, The University of Technology, Sydney, Austral...

Calcium is an ubiquitous second messenger that triggers a plethora of key physiological responses. The events are initiated in micro-or nano-sized compartments and determined by the complex interactions with calcium-binding proteins and mechanisms of calcium clearance. Local calcium increases in the vicinity of single channels represent an essentially non-linear reaction-diffusion problem that ...

A pplication of reverse micelles for the synthesis of nano-sized calcium carbonate particles in different solvents (cyclohexane, decane and heptane) has been investigated. The effect of the mole ratio of water-to-surfactant (R) and type of solvent has been studied on the size and nature of the carbonate particles. The results indicate that an increase in water-to-surfactant ratio results in a l...

Gene transfer methods are promising in the field of gene therapy. Current methods for gene transfer include three major groups: viral, physical and chemical methods. This review mainly summarizes development of several types of chemical methods for gene transfer in vitro and in vivo by means of nano-carriers like; calcium phosphates, lipids, and cationic polymers including chitosan, polyethylen...

This paper deals with the study of Nanotechnology experimentation in Civil Engineering which includes the development, advantages and limitations of Nano concreting technologies. For reducing carbon emission during cement manufacturing fly ash is used as a replacement in ordinary Portland cement which is termed as Portland pozzolana cement(PPC), this inclusion relatively increases the workabili...