Why wont my microbial fuel cell generate any current?

I have constructed a 2 chamber MFC for my senior research assignment and it has yet to produce any voltage. I used nafion as a PEM membrane and used graphite brushes as the electrodes. I have the...

11 January 2021 5,553 4 View

NAND flash recovery?

Hi Due to not being able to access University tools etc. I am stuck using recovery software such as recuva etc. I guess the question I'm trying to ask is how would I go about analysing results...

12 October 2020 437 1 View

The porous nature of the material should show up in the impedance behaviour in terms of inductance element?

The porous nature of the material should show up in the impedance behaviour in terms of inductance element. I do not see any value given for the inductance at the interface in these plots which...

01 October 2020 7,504 2 View

Contrasting singular means?

Does anyone know of a method or approach in SPSS to contrast singular mean scores of overall samples, based only on the overall mean value, standard deviation figure and sample size? The data is...

29 September 2020 5,872 6 View

No title

Due to COVID- 19, pupil teacher of teacher training programs are doing school internship in online mode which they are completely opposed to. What do you think as to it will adversely affect their...

09 August 2020 756 20 View

How to correct invalid atom type error in gromacs?

27 April 2020 1,318 3 View

How to fix lincs warning in free energy calculation?

Dear Researcher I am having trouble during free energy calculation in gromacs as below:- I ran an MD simulation for 3ns and from the last coordinates started a free energy calculation for 3ns. My...

24 March 2020 5,311 9 View

How to visualize CHGCAR file of VASP in VESTA?

In vesta, I am not able to visualize CHGCAR file created by vasp. As I try to open it, the vesta window turns grey. kindly help

23 March 2020 1,155 7 View

Why peak current of oxidation or reduction of analyte decreases in MOF modified electrodes compared to bare?

I am working on Metal Organic Frameworks for electrochemical sensing of organic pollutants. For this, I am preparing MOF solution (1mg/ml ethanol) and dropcast on GCE, air dry then drop cast...

27 February 2020 525 4 View

How to fix Residue mapping error for an amino acid in gromacs?

Dear Gromacs users I want to do MD simulation for my protein but when I run pdb2gmx command I am facing this error:- WARNING: WARNING: Residue 197 named PRO of a molecule in the input file was...

12 November 2019 5,425 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

What is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

Interpretation of Goodman - Kruskal Gamma squared?

Dear colleages, Eta squared is dominantly used in reflecting the explaining power the same manner as a squared partial correlation coefficient (R2p ) from multiple linear regression: as the...

22 February 2021 7,801 3 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View