Who can tell me the easily acquired Pb hyperaccumulator?

The common used Pb hyperaccumulators in the experiment, which and can buy from the business. Thank you!

14 January 2021 460 3 View

Is there Method or paper of image classification combined with GCN or GNN? In addition to tag co-occurrence?

Hello, In fact, I just came into contact with the field of image classification with graph convolution network. In this direction , I only contact with ML-GCN and the improvement based on the...

22 December 2020 9,341 2 View

What form of Mg will be selected during the purification of prokaryotic expression protein?

Hello everyone Recently I wanted to purify several proteins by prokaryotic expression, I read some related literature and found that Mg is needed in the protein purification buffer. I am a little...

02 May 2020 931 3 View

Bayesian model updating and DRAM samping method?

I am learning Bayesian Model Updating and using DRAM sampling method to solve posterior PDF, I have trouble in DRAM method. The issue is : The matlab program I used is open source you uploaded,...

18 December 2019 1,010 1 View

Why the pH decreases when I add 2 g Na3PO4 into 50 ml 1 M KOH solution?

why the pH decreases when I add 2 g Na3PO4 into 50 ml 1 M KOH solution?

06 December 2018 8,460 23 View

How to remove HCL from the Pyridylacetic acid hydrochloride?

how to remove HCL from the Pyridylacetic acid hydrochloride?? I assume using base to neutralized the HCl salt and then extract with organic solvent will NOT work. Because the free pyridyl acetic...

12 October 2017 9,427 3 View

How to use Cancer Cell Line Encyclopedia

co-expression about protein

01 July 2017 6,892 2 View

Anaerobic respiration or fementation in LB medium? Thank you!

If I inoculate the E. coli MG1655 in LB and incubate it on bench overnight, will the E. coli do anaerobic respiration or fementation? Since LB is a rich medium with all sorts of metabolites, it...

15 May 2017 2,848 2 View

How to find the transition states for the dissociation of water on a metal surface?

18 April 2017 5,422 5 View

How to verify the result of a magnetic moment calculation?

04 January 2017 1,523 3 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

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 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

Physical-chemical formation of stalactites/stalagmites. what promotes the formation/growth of these structures?

I know, or think I do, the basic idea behind these natural structures, as from what I know they form due to water dripping from the top leaving a salt deposit behind. But started to wonder about...

22 February 2021 1,400 4 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

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View