Search results for "Calcium"
showing 10 items of 1740 documents
The clinical relevance of low-density-lipoproteins size modulation by statins.
2006
The predominance of small, dense low density lipoproteins (LDL) has been accepted as an emerging cardiovascular risk factor by the National Cholesterol Education Program Adult Treatment Panel III; in fact, LDL size seems to be an important predictor of cardiovascular events and progression of coronary heart disease. Several studies have also shown that the therapeutical modulation of LDL size is of great benefit in reducing the risk of cardiovascular events. Hypolipidemic treatment is able to alter LDL subclass distribution and statins are currently the most widely used lipid-lowering agents. Statins are potent inhibitors of hydroxy-methyl-glutaryl-coenzyme A reductase, the rate-limiting en…
Ion-exchange fibers and drugs: an equilibrium study
2001
The purpose of this study was to investigate the mechanisms of drug binding into and drug release from cation-exchange fibers in vitro under equilibrium conditions. Ion-exchange groups of the fibers were weakly drug binding carboxylic acid groups (-COOH), strongly drug binding sulphonic acid groups (-SO(3)H), or combinations thereof. Parameters determining the drug absorption and drug release properties of the fibers were: (i) the lipophilicity of the drug (tacrine and propranolol are lipophilic compounds, nadolol is a relatively hydrophilic molecule), (ii) the ion-exchange capacity of the fibers, which was increased by activating the cation-exchange groups with NaOH, (iii) the ionic streng…
Comparison of adsorption equilibrium models and error functions for the study of sulfate removal by calcium hydroxyapatite microfibrillated cellulose…
2017
In the present study, the adsorption of sulfates of sodium sulfate (Na2SO4) and sodium lauryl sulfate (SLS) by calcium hydroxyapatite-modified microfibrillated cellulose was studied in the aqueous solution. The adsorbent was characterized using elemental analysis, Fourier transform infrared, scanning electron microscope and elemental analysis in order to gain the information on its structure and physico-chemical properties. The adsorption studies were conducted in batch mode. The effects of solution pH, contact time, the initial concentration of sulfate and the effect of competing anions were studied on the performance of synthesized adsorbent for sulfate removal. Adsorption kinetics indica…
Design Procedures for Soil-Lime Stabilization for Road and Railway Embankments. Part 1-Review of Design Methods
2012
AbstractWhen selecting the appropriate materials for constructing road infrastructures, an important way for minimizing both the economical and environmental impact is to make use of lime for treating soils that are not suitable for road or railways construction.Advances in lime stabilization technique allowed the successful use of this technique also for improving the bearing capacity of the subgrade, with noticeable savings on both aggregate and disposal charges.In this paper a review of internationally adopted design methods for soil-lime mixture is presented, in order to compare testing methods and requirements of the adopted criteria, as discussed in Part 2.
Polymer-Functionalised Nanograins of Mg-Doped Amorphous Calcium Carbonate via a Flow-Chemistry Approach
2019
Calcareous biominerals typically feature a hybrid nanogranular structure consisting of calcium carbonate nanograins coated with organic matrices. This nanogranular organisation has a beneficial effect on the functionality of these bioceramics. In this feasibility study, we successfully employed a flow-chemistry approach to precipitate Mg-doped amorphous calcium carbonate particles functionalized by negatively charged polyelectrolytes&mdash
CCDC 2021075: Experimental Crystal Structure Determination
2020
Related Article: Andrey V. Protchenko, Petra Vasko, M. Ángeles Fuentes, Jamie Hicks, Dragoslav Vidovic, Simon Aldridge|2021|Angew.Chem.,Int.Ed.|60|2064|doi:10.1002/anie.202011839
CCDC 1432054: Experimental Crystal Structure Determination
2016
Related Article: Thais Grancha, Jesús Ferrando-Soria, Joan Cano, Pedro Amoros , Beatriz Seoane, Jorge Gascon, Montse Bazaga-García, Enrique R. Losilla, Aurelio Cabeza, Donatella Armentano, Emilio Pardo|2016|Chem.Mater.|28|4608|doi:10.1021/acs.chemmater.6b01286
CCDC 1530054: Experimental Crystal Structure Determination
2018
Related Article: Tamires S. Fernandes, Wanessa D. C. Melo, Lucas H. G. Kalinke, Renato Rabelo, Ana K. Valdo, Cameron C. da Silva, Felipe T. Martins, Pedro Amorós, Francesc Lloret, Miguel Julve, Danielle Cangussu|2018|Dalton Trans.|47|11539|doi:10.1039/C8DT01686K
CCDC 1958904: Experimental Crystal Structure Determination
2020
Related Article: Sebastian Bette, Jörg Stelzner, Gerhard Eggert, Thomas Schleid, Galina Matveeva, Ute Kolb, Robert E. Dinnebier|2020|Angew.Chem.,Int.Ed.|59|9438|doi:10.1002/anie.202001609
CCDC 1985884: Experimental Crystal Structure Determination
2020
Related Article: Marta Mon, Rosaria Bruno, Sergio Sanz-Navarro, Cristina Negro, Jesús Ferrando-Soria, Lucia Bartella, Leonardo Di Donna, Mario Prejanò, Tiziana Marino, Antonio Leyva-Pérez, Donatella Armentano, Emilio Pardo|2020|Nat.Commun.|11|3080|doi:10.1038/s41467-020-16699-3