Abstract Tricalcium oxy silicate (C 3 S) and dicalcium 2 are the major constituents of cement. In this study, reactivity polymorphs calcium silicates is quantitatively investigated using Density Functional Theory. The result combining DFT calculation Bader charge analysis elucidates that main difference in between C S presence ions which has smaller partial compared to other oxygen crystals. Fo...

Dental caries is a highly prevalent multifactorial disease and has been a major public health problem for many centuries. The goal of modern dentistry is to manage non-cavitated caries lesions non-invasively through remineralization in an attempt to prevent disease progression and improve aesthetics, strength, and function. Remineralization is defined as the process whereby calcium and phosphat...

Dental caries is a highly prevalent multifactorial disease and has been a major public health problem for many centuries. The goal of modern dentistry is to manage non-cavitated caries lesions non-invasively through remineralization in an attempt to prevent disease progression and improve aesthetics, strength, and function. Remineralization is defined as the process whereby calcium and phosphat...

Ultraperformance liquid chromatography coupled with negative electrospray tandem mass spectrometry (UPLC-ESI-MS/MS) was used to determine 7 hydroxy fatty acids in the pollen of Brassica campestris L. var. oleifera DC. All the investigated hydroxy fatty acids showed strong deprotonated molecular ions [M-H](-), which underwent two major fragment pathways of the allyl scission and the β-fission of...

Genetic differences among major types of wheat are well characterized; however, little is known about how these distinctions affect the small molecule profile of the wheat seed. Ethanol/water (65% v/v) extracts of seed from 45 wheat lines representing 3 genetically distinct classes, tetraploid durum (Triticum turgidum subspecies durum) (DW) and hexaploid hard and soft bread wheat (T. aestivum s...

The different types of mineral industries wastes are characterized. Total tonnage in the world of finely ground wastes from i.a. flotation and leaching operations amounts to around 1 500 million tons per annum. The major environmental problems arise from slowly settling fine particles, dissolved metal ions and chemicals retained in the effluent. The paper discusses the toxic effects of dissolve...

Introduction Cancer risk following exposure to energetic heavy ions is a major issue for space exploration and cancer ion beam therapy (1). However, no epidemiological data for exposure to heavy ions are available. Papillary thyroid carcinoma (PTC) is a known radiation-induced tumour. Several molecular studies have been performed to investigate genes involved in PTC occurrence. Rearrangements i...

The demineralization kinetics of deproteinized lobster shells using CO2 were studied. Demineralization reaction proceeds until the concentration of Ca+2 in solution reaches an equilibrium value. The introduction of a cation exchange resin (cationite), in an open system for CO2, allows replacement of the solution Ca 2+ ions by Na+ ions, whereby the equilibrium shifts and an effective dissolution...