In Situ Models

Appelo, C.A.J. and de Vet, W.W.J.M. (2003) Modeling in situ iron removal from groundwater with trace elements such as As, in Arsenic in Ground Water (eds A.H. Welch and K.G. Stollenwerk), Kluwer Academic Publishers, Boston, MA, pp. 381-401. 

Modeling in situ iron removal from groundwater with trace elements such as As... 

Appelo, C. A. J., Drijver, B., Hekkenberg, R., and De Jonge, M., 1999, Modeling in situ iron removal from ground water Ground Water, p. 811-817. 

There are several perfused skin preparations with an intact functional microvasculature. The major advantage of such a perfused system is that subsequent systemic influences on absorbed chemical are not present, yet the tissue is fully functional with an intact microcirculation unlike simpler in vitro models. The perfused rabbit ear model, perfused pig ear model, in situ sandwich skin flap in athymic rats, and the hybrid rat-human sandwich flap have been developed [8], but each intuitively has severe limitations. The isolated perfused porcine skin flap (IPPSF) developed in our laboratory is a unique ex vivo skin preparation that has an intact functional cutaneous microcirculation. Predictions from IPPSF studies have correlated well with in vivo absorption... 

Addy M, Hughes J, Pickles MJ, Joiner A, Huntington E Development of a method in situ to study toothpaste abrasion of dentine comparison of 2 products. J Clin Periodontal 2002 29 896-900. Hooper S, West NX, Pickles MJ, Joiner A, Newcombe RG, Addy M Investigation of erosion and abrasion on enamel and dentine a model in situ using toothpastes of different abrasivity. J Clin Periodontal 2003 30 802-808. 

Core flood tests were used to compare polymer flood only and alkaline-polymer performance. To model in situ oil/water viscosity ratio correctly, the operator mixed the crude oil with kerosene at a ratio of 100 26. Single-, double-, and triple-column tests were conducted. In the single-column tests, polymer flood increased sweep efficiency over waterflood by 5.6 to 9.77%, and AP flood increased by 13.7 to 19.3%. On average, AP outperformed polymer flood by 8.8%. In the double- and triple-column tests, AP recovery factors were about 18 to 20% higher than waterflood recovery factors. Half of the incremental recovery came from the low permeability column. 

There are several perfused skin preparations with an intact functional microvasculaturc. The perfused rabbit ear model, perfused pig ear model, in situ sandwich. skin flap in athymic rats, and the hybrid rat-human sandwich flap have been developed (Pershing and Krueger, 1987), but each... 

A number of model in situ and on-site apphcations of low resolution, and therefore low cost, Raman spectroscopy have been reported including the quantitative monitoring of synthetic rubber and polystyrene emulsion polymerisations, detection of illicit drugs and explosives and detection of cyanide in wastewater using a surface enhanced Raman system [26]. 

In Vitro Models In Situ and Ex Vivo Models In Vivo Models Engineered Mouse Models In Silico Modeling... 

POLYMER RHEOLOGY IN POROUS MEDIA 6.5.1 Summary of approaches to modelling in-situ rheology... 

Thomas, H. R., Rees, S. W., Kjartanson, B., Wan, A. W. L. Chandler, N. A. 1996. Modelling in situ water uptake in a bentonite-sand barrier. In Bentley, S. P. (ed.) Engineering Geology of Waste Disposal. Geological Society, London, Engineering Geology Special Publications, 11, 215-222. 

Below the fim layers normal self diffusion in ice single crystals is expected to take over. In order to solve equation (5) at greater depths we follow a layer from its transformation to ice and use a coupled temperature ice flow model (Johnsen et al., 1995a) to obtain the temperature and strain rate history ez(t) of the layer together with the self diffusion constants measured by Ramseier (Ramseier, 1967) from the modelled in-situ temperature. 

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