Theoretical Analysis for Quantitative Evaluation of In-Situ Nanoparticle Measurement Probability

2014 ◽  
Vol 14 (12) ◽  
pp. 9554-9559
Author(s):  
Jihun Mun ◽  
Dongbin Kim ◽  
Yong-Hyeon Shin ◽  
Sang-Woo Kang ◽  
Taesung Kim
Keyword(s):  
Theoretical Analysis ◽  
Quantitative Evaluation

In situ multiphase fluidization ("upflow washing") for the remediation of hydrocarbon contaminated sands

1998 ◽  
Vol 35 (6) ◽  
pp. 938-960 ◽  
Author(s):  
Robert K Niven ◽  
Nasser Khalili
Keyword(s):  
Theoretical Analysis ◽  
Contaminated Soils ◽  
Fixed Bed ◽  
Fine Sand ◽  
In Situ Remediation ◽  
Pump And Treat ◽  
Wide Range ◽  
Phase Liquid ◽  
Regime Map

A new in situ remediation method is described, "upflow washing," in which contaminants are flushed to the surface within an in situ fluidized zone produced by a jet inserted into a granular formation. The suitability of the method for LNAPL (light non-aqueous phase liquid) remediation is examined by experiments on diesel-contaminated soils within column and tank settings. The experiments indicate significant reductions in diesel levels (96-99.9%) may be achieved by fluidization with water and gas (gas-liquid upflow washing, GLUW) for a wide range of initial diesel concentrations (10 000 to 150 000 mg/kg) and for soil fines contents of 0 to at least 10%. Final diesel levels of <1000 mg/kg in a uniform fine sand and <200 mg/kg in clayey sands can be achieved. The efficiency is much higher than that of fixed bed flushing (simulated pump-and-treat), as the method overcomes the trapping of NAPL ganglia. Fludization with water alone (liquid upflow washing, LUW) is less effective than fixed bed flushing in the uniform sand, but approaches that of GLUW in clayey and silty sands. The results are explained by theoretical analysis of the removability of isolated NAPL droplets and mixed solid - NAPL particles from a fluidized bed due to buoyancy and elutriation, which may be represented using a "removability regime map" for the diesel-water-sand system.Key words: fluidization, in situ, remediation, NAPL, diesel.

A 3D cell printing-fabricated HepG2 liver spheroid model for high-content in situ quantification of drug-induced liver toxicity

2021 ◽  
Author(s):  
Sera Hong ◽  
Joon Myong Song
Keyword(s):  
3D Printing ◽  
Quantitative Evaluation ◽  
Liver Toxicity ◽  
Drug Induced ◽  
Spheroid Culture ◽  
Cell Printing ◽  
Culture Model

A 3D printing-based HepG2 liver spheroid culture model was developed for in situ quantitative evaluation and high-content monitoring of drug-induced hepatotoxicity.

Buckling Evolution of Microelectromechanical Structures

1998 ◽  
Vol 518 ◽  
Author(s):  
Xin Zhang ◽  
Tong-Yi Zhang ◽  
Yitshak Zohar
Keyword(s):  
Theoretical Analysis ◽  
Local Buckling ◽  
Experimental Results ◽  
Mode I ◽  
Mode Ii ◽  
Mode Iii ◽  
Sacrificial Layers

AbstractThis study reports in-situ observations of the buckling evolution of microelectromechanical structures during etching of their underneath sacrificial layers. As the etching went on, the buckling pattern evolved from mode I, the sinusoidal half-waves, to mode II, the constrained sinusoidal half-waves, to mode III, the conventional mode, and finally to mode IV, the blister- like local buckling. Closed formulae were derived from theoretical analysis, and the experimental results agreed well with the theoretical ones.

Theoretical analysis of a method for in situ decontamination of soil containing 2,3,7,8-tetrachlorodibenzo-p-dioxin

1993 ◽  
Vol 27 (3) ◽  
pp. 505-515 ◽  
Author(s):  
Erika J. Dougherty ◽  
Arnold L. McPeters ◽  
Michael R. Overcash ◽  
Ruben G. Carbonell
Keyword(s):  
Theoretical Analysis ◽  
Tetrachlorodibenzo P Dioxin

scholarly journals Draft prediction models for soil engaging tines in two soils of Rio Grande do Sul, Brazil

2013 ◽  
Vol 33 (1) ◽  
pp. 167-175 ◽  
Author(s):  
Antônio L. T. Machado ◽  
Carlos R. Trein
Keyword(s):  
Theoretical Analysis ◽  
Mathematical Models ◽  
Prediction Models ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Best Fitting

The draft forces of soil engaging tines and theoretical analysis compared to existing mathematical models, have yet not been studied in Rio Grande do Sul soils. From the existing models, those which can get the closest fitting draft forces to real measure on field have been established for two of Rio Grande do Sul soils. An Albaqualf and a Paleudult were evaluated. From the studied models, those suggested by Reece, so called "Universal Earthmoving Equation", Hettiaratchi and Reece, and Godwin and Spoor were the best fitting ones, comparing the calculated results with those measured "in situ". Allowing for the less complexity of Reece's model, it is suggested that this model should be used for modeling draft forces prediction for narrow tines in Albaqualf and Paleudut.

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