In this issue of iJACC, Silverman et al. (1) report the relationship of baseline Agatston coronary artery calcium (CAC) score and coronary calcium distribution with future incident coronary revascularization in 6,540 MESA (Multi-Ethnic Study of Atherosclerosis) participants. The primary findings of this novel analysis is that baseline calcium score and the number of vessels with CAC were each i...

Presynaptic calcium channels play a central role in chemical synaptic transmission by providing the calcium trigger for evoked neurotransmitter release. These voltage-gated calcium channels are composed of a primary structural subunit, alpha1, as well as auxiliary beta and alpha2delta subunits. Our previous genetic, molecular, and functional analysis has shown that the cacophony (cac) gene enco...

OBJECTIVES The coronary artery calcium (CAC) score has been shown to predict future cardiac events. However the extent to which the added value of a CAC score to the diagnostic performance of myocardial perfusion imaging (MPI) by single photon emission computed tomography (SPECT) is unclear. The purpose of this study is to investigate the correlation between CAC score and SPECT in patients with...

In a pioneering work, Powers and Brownyard (1948) were the first to systematically investigate the reaction of cement and water and the formation of cement paste. In the late 1940s they presented a thorough model of the cement paste, in which unreacted water and cement, the hydration product, and (gel and capillary) porosity were considered. Via extensive and carefully executed experiments majo...

Stabilization/solidification (S/S) of dredged sediments is an environmentally friendly, low-cost and time-efficient way to manage this waste (according the European classification) in context valorization as novel resources. In study, main objective was evaluate efficiency using a green binder Calcium Sulfo-Aluminate (CSA) cement solidified Dunkirk sediments. For comparison, Ordinary Portland C...

In case of fire in a structure, concrete undergoes internal transformations that can alter its durability. It is also important to take into account the effect cooling regime after temperature exposure on phase assemblage cementitious matrix. An experimental investigation was carried out investigate changes cement paste, heated up various 1000 °C then cooled water or air for comparison. Quantit...

The current study is an assessment of the Al-Tawsseea Cement Plant, located in northwest Iraq, Nineveh. This plant produces Ordinary Portland grade 42.5R according to I.Q.S No(5)/2019. was chosen determine mineralogy using X-Ray Diffraction and Scanning Electron Microscope before after hydration. Physical tests were carried out such as Fineness Test (Blain) ( 331.4) M2/Kg, Soundness (Autoclave)...

Supplementary cementitious materials (SCM) are increasingly used in concrete for economical and environmental reasons. However, the durability of reinforced concretes against, example, corrosion induced by carbonation varies. Here, phase assemblage various cement pastes with/without SCM (slag, fly ash metakaolin), carbonated accelerated conditions (1.5% CO2 65% RH) or not, has been investigated...