Suggest me some trending topics for phd research in text mining/AI/machine learning?

My master's research is in info retrieval and text mining. I would be grateful if you could help me to select a good topic for my phd research proposal.

24 February 2021 393 14 View

Why use both bead beating and enzymes (lysostaphin and lysozyme) for DNA extraction from sputum samples?

Hello, I have read in a few publications that to extract total DNA from sputum samples, both bead beating and enzymes are used to disrupt the cells. Bead beating is supposed to be efficient in...

18 February 2021 3,360 2 View

What are the causes of hyphae granulation?

Greetings, The examination of the interaction zone between Fusarium oxysporum and Pseudomonas by light microscope revealed clear hyphae without septa and the presence of granulations (vesicles),...

05 February 2021 5,523 4 View

How to calculate the field capacity??

28 December 2020 1,521 2 View

How to decrease the difference between the simulation result obtained by comsol and analytical result ?

Hello, I am working on a piezoelectric energy harvester in comsol so I coupled the electrical circuit interface with the piezoelectric device multiphysics. I tried to confirm these results with...

07 December 2020 1,007 2 View

What is the index of germination and howa calculate it??

16 November 2020 4,856 8 View

Hormone levels in male mice ?

Dear Colleagues, Can anyone tell me if there are Data about hormone levels in male mice , E2 Estrogen, and Testosterone blood levels in male mice. Thank you very much.

20 September 2020 1,035 3 View

How can I fix the connvergence error!?

opt freq gaussian calculation is performed, I got normal termination , however, the structure has nottotaly converged. because I had no convergence in Maximum Displacement! how can I solve this...

06 September 2020 4,283 3 View

Determination of activated carbon surface functional groups by Boehm titration ?

i did titration to determine functional groups on the surface of activated carbon, when the titration was done on Na2HC03 and NaOH by HCl, a big volume was necessary to reach equilibrium, and...

13 July 2020 1,022 2 View

Keras code python ?

Hello, I am using a VGG16 on keras to do some image classification on a dataset, What does it mean that the validation loss is smaller all the time than the train loss?. Is 80% a reasonable...

11 July 2020 569 6 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

Can I perform two way ANOVA in case of some missing groups?

I had control cells and performer ELISA analyses group (time 0). I stimulated cells with substance A and B and cultivated for 1, 2 and 3 hours. On each cells I performed ELISA. I have results...

17 February 2021 8,933 4 View

Phosphate buffer with different pH conditions: HCl or NaH2PO4?

Hi all, I just encountered this dogma; when adjusting pH of phosphate buffers, I've been using HCl/NaOH to in/decrease pH of buffers and recently I was told that HCl/NaOH can't be used to adjust...

08 February 2021 9,070 5 View

Why FTIR can not detect bases of nucleic acid in extracellular polymeric substances (EPS)?

I characterized functional groups of EPS using FTIR. Goups of sugars and proteins (e.g., -OH, amide, -COOH) as well as phosphate group of nucleic acid were readily detected. However, peaks of...

05 February 2021 4,405 1 View

What is the relationship that determines the depth of the mechanical cultivator with the age or size of the weed For crops planted in lines?

the great depth of the cultivator may lead to passage under the roots without killing them and may give negative results to break up the soil below the roots, increasing their activity, especially...

03 February 2021 3,198 7 View

Buffer for protein solubilization after acetone/AS precipitation that is compatible with cell stimulation?

Hello! I am precipitating some proteins (with either acetone or ammonium sulphate) and I need to resuspend the protein pellet in a buffer that properly keeps the proteins soluble AND which is...

27 January 2021 6,958 4 View

Why sometimes current- voltage plot in chemiresistors/ FET does not pass through the origin?

I am trying to measure resistance from I-V curve from a chemiresistor/ FET sensor with a keithly sourcemeter. The substrate is soaked/ wet with protein and phosphate buffer only. But the I-V line...

24 January 2021 8,009 3 View

How to make a 100mM potassium phosphate buffer at pH 2.5?

Do I just need to add my basic and acidic potassium phosphates to get the lowest pH achieved by mixing those (I think it is around pH 5.8), and then lower the pH further through addition of HCl?...

06 January 2021 7,231 2 View

Can total phosphate (TP) in soil be determined with UV-Vis Spectrophotometer?

Dear All, I would like to know if total phosphate (TP) and total nitrogen (TN) in soil can be determined with UV-Vis spectrophotometer or not. If somebody knows the method, I would like to get...

03 January 2021 7,662 6 View

What is this culture medium for?

Here is the composition of a culture medium named BM medium. It doesn't contain carbon source and nitrogen source, while after cultivation something grow on that. Could anyone explain what...

31 December 2020 8,060 5 View