How is it possible to measure a electrical current created by an electron beam on an aluminium volume?

Dear , I am writing regarding GATE. Indeed, I wish to find a solution of the following problem: I realise, on GATE, the bombardment of electrons on an aluminium volume and I wish to collect...

24 March 2020 2,471 1 View

How to make graphitic particles from nano-sized carbon particles ?

I have synthesized carbon particles using acetylene by the non-thermal plasma synthesis ( Nonthermal Plasma Synthesis of Nanocrystals: Fundamental Pri... ). But ultimately I want a graphitic...

18 March 2020 6,044 3 View

Sampling Procedure

We are planning to conduct a national survey targeting both primary and secondary schools. I need a sampling methodology which is cost effective and reliable? Any advice on a procedure/methodology...

11 November 2015 9,567 11 View

Are synthesized nanoparticles permeable through animal cell membranes under normal physiological conditions?

What is the the size range and chemical nature of nanoparticles which can pass through cell membranes? If it is not permeable how can we induce its permeability?

01 September 2013 9,300 6 View

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09 January 2013 9,089 4 View

Which is the best management of malnutrition in kids

There seems to be much concern on the way different organisations deal with malnutrition in east africa

13 September 2011 8,589 5 View

Is there a possibility that HMDS will attached on a sodium silicate-coated cold rolled steel?

I'm trying to develop a coating for tillage implements. CRS are dipped in sodium silicate and then will be dipped on HMDS. I am curios if HMDS will attached to the metal by doing this so. I also...

01 January 1970 2,682 2 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

To date, according to health authorities, 30% of the population's diseases are initiated by drinking water pollution. Do you know this problem?

The main studies are as follows: * regular and timely receipt of information about the state of the environment using automated systems (stationary and mobile); * operational analysis of the...

23 February 2021 912 5 View

What is the optimum time and temperature of blanching and pre-frying potato for frozen fries?

I am helping a local home industry for developing frozen fries from their local farm. I want to know what is the optimum blanching and pre-frying temperature and time for processing. Please also...

23 February 2021 1,616 5 View

How to best wash a 96-well plate containing microplastic?

I am planning my protocol for my dissertation for an experiment quantifying bacterial (E. coli) biofilm formation on micro-plastic (5mm discs of polyethylene bags) by conducting a crystal violet...

23 February 2021 7,868 2 View

Multinomial probabilities and confidence intervals - obtaining the CI of the reference category?

Hi, Some background to my question: I have fitted 1st order multinomial Markov models with covariates. Since all probabiilties (for each row of the transition matrix) sum to 1, I estimate only...

22 February 2021 2,541 4 View