Oil red O protocol for flow cytometry?

18 February 2021 4,214 3 View

After staining a gel with coomassie can I stain the same gel with fluorescent dye?

I want to know if it is possible to be done the inverse to view / verify other bands that not look in staining a gel with coomassie.

01 February 2021 8,647 5 View

What a 50% positive predictive value mean?

I want to explain a threshold of 50% PPV to describe how some assays perform when the prevalence of disease is high or low

07 October 2020 8,657 6 View

Author who is not actually an author of some of my publications?

I came out to realize that a person who is enlisted as an author of some publications that I am the REAL AUTHOR, is marked instead of me. How do I change that? Example: Standardized sampling...

21 September 2020 378 7 View

How to increase the short circuit current density in a perovskite solar cell?

I'm optimizing the procedure for making inverted PSCs: ITO / PTAA(8nm) / CsMAFA(320nm) / PCBM(60nm) / BCP(9nm) / Ag(100nm). The cells look very good, I have a very good FF (0.70) and Voc (1.0V),...

16 September 2020 6,286 8 View

How can I identify and catalog the Rainforest fungus?

We have a big area of Rainforest where we can see a big variety of fungos growing around. I'd like to catalog them using a simple methodology. We do not have equipment for that despite a...

16 March 2020 9,034 3 View

Sensors and Systems for IIoT?

13 March 2020 7,295 3 View

Does someone know the cause of stains appearing on n-i-p Perovskite Solar Sells?

I did the procedure described by saliba ( How to Make over 20% Efficient Perovskite Solar Cells in Reg... ) to make n-i-p PSCs. However, after perovskite deposition stains appeared in the cell...

29 October 2019 8,012 3 View

How to process small samples for histology?

Hi, I have very small samples of about 1x2mm (dental pulp tissue) and I need to process them for histology (dehydration, parafine inclusion, stainning with HE, etc). The problem is that the...

18 September 2019 1,180 4 View

What is the best protocol for evaluate TMR-peptide?

I apologize if my question seems to naive, but I would like to do a protocol to determine bio-distribution of a peptide coupled to TMR in an animal model however, I am having some difficulties in...

07 July 2019 5,664 2 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

Mixed ANOVA - help?

I'm currently working on a piece which asks to conduct an ANOVA - looking at the effect of sporting group (2 levels), and exercise trials (two trials with six levels). I've computed this all...

27 February 2021 9,626 4 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

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

How to extract water soluble amino compound from after aqueous work up?

4-Dimethyl amino pyridine is used in reaction.Product formed contains amino group along with amide & is highly water soluble. To remove 4-DMAP aqueous work up done. Please give solution. Thanks.

21 February 2021 1,883 1 View