Ans) Soil vapor extraction (SVE) is one of the most effective remediation technologies for soil and groundwater contamination. Soil particles can be mobilized by air perturbation during SVE, resulting in the differentiation of porous media, which has not been well addressed.
- Developed a numerical method to study the flow pattern and quantify the change of porous media for the first time. Based on the mass equilibrium and Darcy’s law, a two-phase water–air flow model was constructed with integration of saturation, relative permeability, and capillary pressure during SVE.
- Relationship between porosity and saturation was deduced and coupled with the two-phase flow model for quantifying change of porous media in real time. Results reveal that both porosity and permeability increase sharply in the early stage of SVE then gradually to a quasi-steady state. These increases in vadose zone tapered off with distance from the SVE screen and the steady period occurred later as well. The influence radius of a single SVE well and the change degree in porosity and permeability of media were proportional to the extraction vacuum and the driving coefficient C, which is more sensitive than extraction vacuum according to the simulation results.
- Knowledge from this modeling exercise provides a useful tool to estimate the change of remediated zone and assess the environmental risk of remedial activities at real-world contamination sites.
What parameters are used for laboratory assessment of iron deficiency? Why?
Sve u sve WILL COS() dx over [-6, 6) 9 + sin(x) -0.0619 X Use a calculator to graph fand the antiderivative over the given interval (a, b). y 0.21 f( OOK W W -0.1 -0.27 -ozh 0.2 f FU VA Solve for the antiderivative foff with Co. - COSE) 9 + sino dx over-6,61 -0.0619 x Use a calculator to graph and the antiderivative over the given interval (a, ). 021 XOX V W FE) -0.2 -0.21 o 021...
Sve Anse 2 points A Service provide by three 167KVA Transformer is connected in Delta. If one of the Transformers is broken. what power can be taken from the system? a. 300KVA b. 334KVA C. 289KVA d. 167KVA
Path:P Words 0 Sve QUESTION 4 Suppose you simultaneously short ExxonMobil Stock at a price of S90 per share and purchase a one-year call option with strike price of $100 for $1.254. What is the largest profit you can eam on this position? TT T Arial 3 (12pt) Words:0 Path 0 points (E
Describe the contemporary issue and explain what external stressors are associated with this issue. Outline assessment strategies to screen for this issue and external stressors during an assessment for an adolescent patient. Describe what additional assessment questions you would need to ask and define the ethical parameters regarding what you can and cannot share with the parent or guardian. Discuss support options for adolescents encountering external stressors. Include specific support options for the contemporary issue you presented.
Assessment Tools used for DNA analysis in samples include: a. Slot Blots, Yield Gels, Digest Gels and Product Gels b. Slot Blots, Renaturation Curves, and Mass Spec c. Slot Blots, Digest Gells, and Enzyme Kinetic Parameters d. none of the above
Question 20 4 points Sve Answer An insurance analyst working for a car insurance company would like to determine the proportion of accident claims covered by the company. A random sample of 240 claims shows that the insurance company covered 90 accident claims while 150 claims were not covered. Fine the interval that contains 95.42% of the sample proportion of an accident claims 134.54% 40.4794 131.25% 43.75%) 156.25% 66754 159 30% 65.47
sve v anu i, respectively. 7. Regression without any regressor. Suppose you are given the model: Y = pi + uj. Use OLS to find the estimator of Bi. What is its variance and the RSS? Does the estimated By make intuitive sense? Now consider the two-variable model Y = B1 + B2X; +ui. Is it worth adding X, to the model? If not, why bother with regression analysis?
On stat your assessment is based on: Final Exam 47% Learn based on‐line assessment 34% Assignments 19% Consider three random variables X, Y and Z which respectively represent the exam, on‐line assessment total and assignment scores (out of 100%) of a randomly chosen student. Assume that X, Y and Z areindependent (this is clearly not true, but the answers may be a reasonable approximation). Suppose that past experience suggests the following properties of these assessment items (each out of 100%):...
SVE & EXT SLATE Damon Industries manufactures 30,000 components per year. The manufacturing costs of the components was determined as follows: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead $150,000 170,000 70,000 90,099 Jon - not a Skype An outside supplier has offered to sell the component for $14. If Damon purchases the component from the outside supplier, the manufacturing facilities would be unused and could be rented out for $11.000. If Damon purchases the component from the...