How to find if Qualitative and Quantitative (discrete) variables have a relation?

I'm going to do a brief research about the dependance between the number of cases of Covid-19 and sex( male/female) . One of the requierements is to use inferential statistics to test the...

18 February 2021 7,092 11 View

Does anyone have a qPCR protocol for Lactuca Sativa?

I need to extract RNA, produce cDNA and do my measures via qPCR. How much material? Which stage of growth?

24 January 2021 559 2 View

Is PROCESS v3.5 by Andrew F. Hayes compatible with SPSS v 26 or 27 on Windows?

I installed the PROCESS Custom Dialog v3.5 by Andrew F. Hayes on two different versions of SPSS (26 and 27, both on Windows 10) running SPSS as an administrator and using the 'extension' menu....

30 November 2020 1,390 3 View

What are the digital competencies that university professors/trainers need to perform well & answer the demands of digital transformation businesses?

I would like to have access to academic research that compares the skills needed by university professors and corporate education instructors or facilitators. I would like to understand if the...

29 November 2020 442 3 View

Is there any research on in-vitro meat about sporadic cancerous cells and their possible impact?

The high rate of proliferation required of stem cells could produce genetic instability which may result in sporadic cancerous cells. Is there any research on this?

10 September 2020 3,666 1 View

Which is the best transfection method for cell lines that growth in suspension?

We are trying to transfect lymphoma cell lines, and we have tried several methods, the best is through the use of lentivirus of course, but in this pandemic days is very difficult to import this...

06 July 2020 8,043 12 View

Do you have in your country a regulation on sewage sludge in agriculture?

If in your country a regulation on sewage sludge for agriculture exists, please could me specify which microbiological parameters and limit values have been established? Thank you very much in advance

04 December 2019 8,690 3 View

Social media_systematic participation to giveaways?

I am analysing the outcomes of a pilot project involving people' reaction (reaches and engagements) to posts related to plastic pollution. To enhance engagement we proposed "challenges" i.e....

10 November 2019 571 0 View

Problems with RT-PCR of respiratory syncytial virus. Any advise?

Hello! I am having difficulty amplifying the coding sequence of RSV F protein. The protocol I have used is a sfollows: I infect HEp-2 cells with the virus, then when CPE is evident I collect the...

02 October 2019 3,061 3 View

Where does a single nucleotide ambiguity in sequencing of a digested plasmid, that was not in the original plasmid, come from?

We have been having issues with this certain plasmid for a while: we were trying to remove one gene (GFP) and replacing it with another. The digest of the original plasmid with BamHI and NotI...

11 August 2019 8,202 8 View

How to remove the residual PDMS on the silicon mold?

Incompletely cross-linked pdms are difficult to remove.

01 March 2021 798 3 View

Can't recognize exact phase and PDF card no of Silicon carbide in XRD?

We have deposited silicon carbide on carbon substrate using one PVD technique. Due to amorphous behavior of SiC at low deposition temperature, we performed heat treatment of those films at...

22 February 2021 2,072 3 View

Amorphous silica XRD peak at around 10 degree?

21 February 2021 3,417 5 View

What is the detection limit of ED-XRF technique for transition metals in silicon ?

Hi everybody, please, can someone tell us if the transition metals (W, Fe, Ni, etc ...) in silicon destined for solar cell manufacturing can be detected by ED-XRF technique. Note that the...

18 February 2021 6,231 4 View

Unusually Busy Raman Background?

Hello, I am observing a nearly periodic background spectrum for a wide variety of SERS substrates. I see this response (attached below) for bare Au films, Cu films, and Au nanoparticles on...

15 February 2021 9,922 5 View

Sound transmission loss (Acoustic Metamaterial)?

My design contains three parts. A silicon rubber membrane is placed between upper and lower part. I want to calculate sound transmission loss by using comsol Multiphysic. There are lots of...

05 February 2021 466 4 View

Is it possible to find out the wettability and contact angle of water on the rough or corrugated substrate?

First of all, whether it is possible to identify the presence of water and its amount on the Silicon substrate by using only FT-IR spectroscopy. Can ATR-FTIR spectroscopy find out the wettability...

03 February 2021 9,085 4 View

How can you make a PEDOT:PSS film using the doctor blade technique?

I have been trying to make an even PEDOT: PSS (PH1000) film with the doctor blade technique (tape casting) with varying results. I have been using a silicon substrate that's treated with piranha...

01 February 2021 8,506 5 View

What is the most efficient way to generate amorphous silica in LAMMPS?

I would like to generate multiple large samples of amorphous silica in LAMMPS. Currently I am generating it by beginning with a lattice of silicon and oxygen atoms and using a melting and...

28 January 2021 6,128 4 View

How do you obtain an even spread of polymer film on Silicon wafer?

Hi Everyone, I made some polymer(Polylactide) films on Silicon wafer. The polymer was dissolved in DCM and THF. I observed that the colour of the film at the centre of the Wafer is different...

27 January 2021 9,724 1 View