منابع مشابه
Hydration Modeling of Calcium Sulphates
The CEMHYD3D model has been extended at the University of Twente in the last ten years [1,2]. At present the cement hydration model is extended for the use of gypsum. Although gypsum was present in the model already, the model was not suitable for high contents of gypsum and did not include the transitions between the different calcium sulphate phases (anhydrite, hemihydrate and gypsum). Beside...
متن کاملHydration modelling of Calcium Sulphates
The CEMHYD3D model has been extended at the University of Twente in last ten years. At present the cement hydration model is extended for the use of gypsum. Although gypsum was present in the model already, the model was not suitable for high contents of gypsum and did not include the transitions between the different calcium sulphate phases (anhydrite, hemihydrate and gypsum). Besides that gyp...
متن کاملEffect of dextran sulphates on thrombin activity.
To clarify the action of dextran sulphate, a heparin analogue, in the clotting of fibrinogen by thrombin, determinations were carried out on the clotting activity, the release of fibrinopeptides from fibrinogen, and the hydrolytic activity of thrombin against a peptide chromogenic substrate in the absence or presence of antithrombin III (heparin cofactor). It was shown that dextran sulphate its...
متن کاملMulti-scale hydration modeling of calcium sulphates
Computer models for cement hydration has been proven to be a useful tool for understanding the chemistry of cement hydration, simulating the microstructure development of hydrating paste and predicting the properties of the hydration process /1/. One of these advanced models is CEMHYD3D, which is used and extended within the University of Twente for the last 12 years with pore water chemistry /...
متن کاملEnzyme inhibition by sodium alkyl sulphates.
velocities in the forward and reverse directions was 54.5: 1 , somewhat lower than that previously reported (McQuate & Utter, 1959). Product-inhibition experiments with a non-saturating concentration of the constant substrate showed that in every case competitive inhibition occurs. This is consistent with a rapidequilibrium random Bi Bi mechanism for the reverse reaction, a similar mechanism to...
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ژورنال
عنوان ژورنال: J. Chem. Soc., Trans.
سال: 1886
ISSN: 0368-1645
DOI: 10.1039/ct8864900001