Why battery always retain the same value of power?

Dear all, I have been testing a model that is in the Matlab library (https://es.mathworks.com/help/physmod/sps/ug/simplified-model-of-a-small-scale-micro-grid.html), this is named "power...

10 November 2020 2,117 3 View

How does methylene blue fluoresce under dark UV?

Will it show as blue color under dark UV light (say 390 nm to 400 nm range) ? Does it degrade over time under long exposure of UV light (i.e. losing its fluorescein characters) ? What...

23 September 2020 9,752 2 View

How to avoid blockages of centrifuge filters when filtering polydisperse liposome samples for separation of free hydrophobic drug?

I'm using ultrafiltration for the separation of free curcumin from liposomes. The tubes are 1ml 0.45um cellulose acetate filter tubes (Corning Spin-X) and the centrifuge I'm using is the Thermo...

01 September 2020 8,875 2 View

What benchtop high pressure homogeniser for downsizing liposomes would you choose and why ?

Emphasis on: Minimising drug and lipid loss Minimising number of passes Achieving unimodal distribution Maintaining high encapsulation efficiencies Ease of use and maintenance

24 November 2019 1,946 2 View

How to quantify drug uptake of each cell line of co-cultured cells?

22 October 2019 3,153 3 View

Measuring presence and immersion: Within or between groups?

Hi, I am currently working on a project where I am looking to measure variables such as sense of presence, immersion, and realism using a self-report questionnaire. Participants are to be divided...

11 July 2019 943 1 View

Does anyone have a protocol for staining using Osmium tetroxide solution for electron microscopy?

I am planning to perform analysis of liposomes using TEM. Therefore, i thought of using Osmium tetroxide solution as a staining agent.

20 March 2019 6,137 4 View

Should heutagogy, as an instructionl approach, only be used in formal teaching & learning situations, or can it be used informally as well?

The main thing I am interested in here, is whether heutagogy is a valid instructional approach for non-formal teaching & learning situations. Please tell me what you think!

31 January 2019 5,972 6 View

Speed up the performance in DC-DC Power Converter?

Dear Ms, I have been thinking in how to Speed up the performance in DC-DC Power Converter?, because I have a systems which has 2 DC-DC converters, the first one is working in order to obtaing the...

30 January 2019 4,819 7 View

How to calculate the cost of building and maintain a grid-connected microgrid?

Dear Ms, I am seeking papers or official reports, in order to find, how do the plannifier determine and forecast the cost of implementing a microgrid?. Do you have information about it?, because I...

16 December 2018 153 1 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 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

No title

22 February 2021 9,932 11 View

Can anyone help or comment on solubilising chlorobutanol in aqueous injections in minimum time possible?

Please suggest solubilisation of chlorobutanol in injections. Tried pH and high temperature. But the issue is of assay drop. If anyone can suggest any solution. Its a commonly used excipient for...

21 February 2021 7,397 1 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

What properties of water shall be analyzed and evaluated to test the effectiveness of activated carbon?

I would like to ask what other properties of water (pH and such) shall be analyzed and evaluated to test the effectiveness of activated carbon from filtering the contaminants present in the water?

20 February 2021 9,422 8 View

Can anyone help with an Accurate Diffuser Expansion Loss formula for rectangular shaped diffusers in turbulent flow regime?

I have tried Idelchik's Handbook of Hydraulic Resistance 4th Edition (2007 page 300) formulas and across some range the formulas are reported valid for, the law of conservation of energy is...

20 February 2021 2,504 1 View

Phenol-pH graphic?

We want to use phenol pH graphic to measure the pH of mediums before and after inhibitor application to cells. We have phenol absorbence values at 460, 560 and 720 nm wavelength. When we measure...

20 February 2021 7,700 3 View