Curious if desalination plants publish their utilization rates? i.e. how much of their built capacity they produce on a day-to-day basis?

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Using two-tailed test for directional hypothesis?

In my study, I have used Process Macro to test the proposed relationships. The hypothesis is directional and two-tailed test has been deployed. Can anyone please clarify how to justify using...

06 February 2021 3,023 3 View

Hand Grip Strength (HGS) - alternatives to Jamar Dynamometer for HGS?

Anyone have validated cheaper alternatives for measuring hand grip strength? The Jamar has been around a very long time, and I would have thought someone has found a useful alternative! Something...

09 June 2020 4,210 1 View

Why a colorimetric assay is usually not in green?

Various colorimetric assays we use are blue/purple/pink/red but not in green shades. Is there any particular reason for this?

30 May 2020 5,834 1 View

How to dry dodecane and hexadecane after completion of the reaction?

Rotavapor was not able to dry these solvents after completion of the reaction. How can I remove dodecane or hexadecane from my reaction mixture.

17 May 2020 3,848 3 View

Is there a fluorescent dye or any method with which Chitosan can generate fluorescence?

I have generated polyelectrolyte complex in the form of fibers using Chitosan and polygalaturonic acid and in order to observe the fibers under confocal microscope they have to generate fluorescence.

11 March 2020 6,627 4 View

What are some physical methods to determine binding affinity of a protein?

What are various options available while determining the binding affinity of a protein to it's target? In my case the target is also a protein. Are there any standard physical methods to...

09 March 2020 8,053 8 View

Is there a way to convert a 2D matrix into 1D vector which preserves the joint distribution among the columns in the matrix?

I have a matrix where each column represents a feature and each row represent a data point. I am trying to convert this matrix into a 1D vector which can contain the joint distribution among the...

01 March 2020 6,408 3 View

How do I interpret the below test for Uni-variate normality?

Hi, I have a large data sample with 15k rows and I am trying to perform uni-variate normality analysis on the dataset. I have come to understand that normality tests are really sensitive towards...

11 March 2019 3,041 4 View

How to acidify samples when using GC-FID for free Volatile Fatty Acid quantification?

Hi everyone, I use the GC-FID with the StabilWax DA column (http://www.restek.com/chromatogram/view/GC_CH00284) for volatile fatty acid (VFA) quantification (C2 - C7 acids). For this, I use 2%...

15 March 2018 9,752 15 View

What kind of ANOVA to use for my analysis with four factors?

I am doing a study based on the speech measures with gender, health condition, different passages read and different number of sentences from each passage. The number of levels in these factors...

16 January 2018 310 6 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

Can I use TCA instead of TFA for protein analyis in RP-HPLC?

I am trying to analyze lipase using the reverse phase-HPLC C18 column. In the literature, 0.1 % TFA was and 60% ACN was used. Can I use TCA in place of TFA? If any other methods are available to...

25 February 2021 2,388 3 View

What is this fern?

Please help me to identify this fern species. Thank you in advance.

24 February 2021 2,435 5 View

To date, according to health authorities, 30% of the population's diseases are initiated by drinking water pollution. Do you know this problem?

The main studies are as follows: * regular and timely receipt of information about the state of the environment using automated systems (stationary and mobile); * operational analysis of the...

23 February 2021 912 5 View

Multinomial probabilities and confidence intervals - obtaining the CI of the reference category?

Hi, Some background to my question: I have fitted 1st order multinomial Markov models with covariates. Since all probabiilties (for each row of the transition matrix) sum to 1, I estimate only...

22 February 2021 2,541 4 View

What are some underexplored theories and concepts in Activated Carbon as A Water Filter?

Hi, me and my team mates are currently planning to pursue the topic of Activated Carbon from Coconut as a Water Filter. And we would like to ask for your suggestions and knowledge on what specific...

22 February 2021 6,569 3 View