Can anyone help me to design an OLED using COMSOL?

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Is it possible for the soil pH to be around 8, but with negligible amounts of carbonates, bicarbonates and exchangeable sodium?

Can this pH of 8 be due to the presence of other substances? Or do I have an error somewhere in the analysis? Thank you!

26 June 2024 9,093 4 View

What are the prices for the following antibodies?

BD Pharmingen™ FITC Mouse Anti-Rat αβ T-Cell Receptor (561672) BD Pharmingen™ APC Mouse Anti-Rat CD4 (550057) BD Horizon™ V450 Rat anti-Mouse CD8a (560469) BD Pharmingen™ PE Mouse Anti-Rat CD45R...

10 May 2024 3,072 0 View

What is the recommended sample size for the validation of a standard questionnaire consisting of 40 items?

Dear colleagues, I am looking for advice on the validation of a standard questionnaire that I intend to translate. The original version contains 40 items. Could you please tell me what sample...

26 March 2024 1,660 11 View

Why does a precipitate form rapidly when i add a solution (Nitric acid + water ) to a solution of TTIP in isopropanol to ?

So I have ben trying to prepare TiO2 nanoparticles but i am getting trouble with the fromation of White PPT which later dissolves to form a clear solution that unfortunately doesnt form a gel. it...

25 March 2024 8,808 2 View

Does antigen retrieval for IF on tissue samples need to be done on the same day?

For both heat-induced or proteolytic-induced antigen retrieval, does the AR needs to be done on the same day of the IF? Or can be done one day in advance, store the slides at 4º, and performe the...

06 March 2024 220 1 View

Any empirical study about theater education for immigrant students?

03 March 2024 6,134 0 View

How can I model a packer in Abaqus for segmental tunnel linigns?

Currently, I am trying to model packers made from recycled plastic material (E=360N/mm^2 and a poisson ratio of 0.4). The best way to model these packers would be to only adjust the contact...

26 February 2024 5,699 1 View

What is the pH and osmolarity to measure the activity of myeloperoxidase (MPO) from the formation of hypochlorous acid?

Optimal buffer and conditions to determine the enzymatic activity of MPO by the colorimetric method that is based on the formation of hypochlrous acid which reacts with taurine to form the...

07 February 2024 3,056 0 View

Can convergence (SCF) be improved for transitional metals?

In Guassian, which convergence algorithm is best for working with transition metal interaction? It is taking a long time to even get the first block of coordinates, in the output file it said to...

28 January 2024 4,276 1 View

What is the ideal microscope objective (20x or 40x) to assess the size of adipocytes in abdominal adipose tissue in a murine model?

I need to evaluate abdominal adipose tissue hypertrophy in a murine model with metabolic syndrome, with and without treatment and I need to review which is the best objective to measure adipocyte...

09 January 2024 7,149 0 View

Problems about acousto-optic coupling in Comsol, how to check whether the moving mesh is correct?

I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...

13 August 2024 9,795 0 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Controlling for pupil light reflex when analyzing pupil size time course?

I used eye tracking to examine how participants from two different populations (A and B) react to an image. Participants in population A exhibit larger pupil sizes over time, but they also have...

10 August 2024 3,229 0 View

Basis set and input instruction to calculate HOMO and LUMO using Orca for Imidazolium based organic salts?

Hey there, As a synthetic chemist delving into theoretical calculations for my imidazolium-based organic molecules, I would greatly appreciate any guidance on the appropriate input instructions...

09 August 2024 5,444 7 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

How to convert g/kg Humic acid dose to kg/ha?

I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?

02 August 2024 7,186 6 View

Z-average size from Dynamic Light scattering can it be lower than the original probe size?

Hi everyone, Recently I have been conducting Dynamic Light scattering experiments in a micellar solution at 5 and gel at 37 degrees of Celsius with latex particles of diameter 190-500 nm. While...

01 August 2024 1,168 4 View

How to improve peaks separation in HPLC?

Hi everyone, I'd like to better separate two close peaks coming from a bioconversion sample, I'm currently using a C18 KromaPhase 4,6mm Ø.I. SCHARLAU, particle size (µm): 10, pore size (Å): 100,...

30 July 2024 435 3 View

While doing Chronoamperometry, when the light is turned off, why the current is not decreasing sharply?

Here, I have used Ag/AgCl as reference electrode and 0.5M KOH.

29 July 2024 4,538 3 View

Aqua regia not heating up?

I used Aqua regia to clean Au nanoparticles in the used glassware. But for some reasons, it is not heating up upon mixing. The color did change from no color to light orange. The Au NPs on the...

25 July 2024 4,390 0 View