How do you properly spike sediment with Phosphorus for internal loading experiments?

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How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

How to constrain genetic algorithm input u?

My real system (buck converter) can only take an input of 0 to 1 (duty ratio) and I need to constrain the system so the controller action keeps within this bounds. How can I do this? The code for...

22 February 2021 2,125 3 View

The Role of Town Planners in CAV Use?

Colleagues and I are about to begin a project investigating the role of town planners and local authorities in establishing the introduction of connected and autonomous vehicles (CAVs). What...

21 February 2021 2,247 3 View

Why are the modelled and circuit system different in response for controlled buck converter?

[Images are attached at bottom] I am currently working on a buck converter controlled by two different control methods, Reinforcement learning applied to find PID values & a lead-lag...

16 February 2021 5,060 10 View

How can I interpret a ratio variable?

Dear colleagues, I am running a regression in which I have the following regression FoodExp = 67.04 DepRatio +.....e My interest is in the interpretation of the coefficient on the dependency...

16 February 2021 2,058 2 View

What is best technique to quantify necrotic cell death of specific cell populations?

I currently using FACS (Aurora Cytek) to quantify necrotic Gr1+ cell death from the spleens of immune competent mice. I target Gr1+ cells in the spleens of tumor-bearing mice using a photodynamic...

08 February 2021 733 6 View

Why do some full text requests not allow me to respond to the requesting person?

Over the last year, when I have clicked on 'View the Request' in the notifying e-mail for a full text request, I have been taken to the paper in question but there is no request visible and thus I...

16 January 2021 7,558 1 View

Spectrabase no longer has overlay function?

Hello, I am a quality control chemist and I test raw materials for a nutritional supplement company. I make heavy use of FTIR-ATR for identification. We are a small laboratory with a limited...

07 January 2021 8,850 2 View

Follow up tests to explore interaction effects in a multiple logistic regression: can someone help explain my contradictory results?

I am conducting a logistic regression in order to examine whether there is an interaction between the number of stressors participants were currently experiencing (between 0-9) and their current...

20 December 2020 1,043 9 View

How to stain adherent cells with DAPI?

Hello! I am growing transfected cells in 24 well plate. on the bottom of each well i have a small glass cover-slip. so the cells adhere to that cover slip. I am using this method because its very...

15 December 2020 7,121 3 View

Uncertianiny in using dry or wet basis in mixing a sediment with fuel oil?

Hello I'm currently working on a topic related to studying the anaerobic biodegradation of TPH in marine sediments. In this work, sediment should be mixed with fuel oil to a concentration of 20 g...

24 February 2021 9,839 3 View

Discuss the extent to which morality in African traditional societies can be classified under the Natural Law theory of morality?

How can one classified African traditional societies under natural law

18 February 2021 7,334 8 View

How to calculate time needed to evacuate a pressure from a tank using a pump?

Dear I have an air reservoir with 50 bar pressure , this reservoir is fed by 2 bar air pressure source, I would like to instal air pump ( 30 m3/h ) to evacuate the 2 bar fed pressure so I always...

06 February 2021 3,520 3 View

What makes yellow color appear in phosphorus sample after autoclave digestion?

I was using autoclave for digesting water samples for Total phosphorus measurement with ascorbic acid method. The autoclave was set to perform 2 hours digestion and around 121 Celsius degrees. I...

25 January 2021 206 3 View

What are the natural background values of Major,Trace and REE elements in sediments deposited by Indian rivers?

We are working on geochemical analysis of sediments derived from eastern and western ghats of India.

20 January 2021 8,963 6 View

Which statistical analysis do I use to compare three data sets with different sample size?

I need to compare the soil phosphorus content in three different locations. I would run an Anova to compare the three data sets (1: 3 data points; 2: 17 data points & 3: 4 data points) to see...

16 January 2021 5,553 14 View

Permeability of fractured reservoirs?

Hi all, What I know the permeability of matrix and fracture can be in a broad range in fractured reservoirs. Am looking for the most usual range for their permeability separately. I will be highly...

15 January 2021 5,271 2 View

How deep into the sediment do marine/riverine oligochaetes live?

I am working with intertidal muddy sediments. In one of my sites the sediment was extremely muddy (high % of silt), oxic layer was shallow, and there were a lot of oligochaetes. I would like to...

14 January 2021 7,269 4 View

Seperate of organic and inorganic phosphorus in waste water?

Is it possible to separate organic and inorganic phosphorus in wastewater with a filter?

14 January 2021 952 3 View

Is there any relevant technique for mesocosm studies in marine environment using Nanoparticles?

I am planning to perform mesocosm study in simulated marine environment using Phosphorus based nanoparticles, i would be using marine micro-organisms in it. kindly suggest me some effective...

07 January 2021 5,877 3 View

T. H. Al-Noor

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3797073/

Article A simple model of internal loading of phosphorus in Lake Okeechobee

Paul Milham

I'm unsure about sediments because or the redox conditions, but heaps of work is done on P sorption by soils and the pH and redox conditions, e.g. under rice