Hello my friends, how I can mesurement soil sample(250 gm) by gamma spectroscopy?

Hello, I have soil sample (250 gm). I need to measure it by gamma spectroscopy (HPGe) . I have efficiency curve of marinelly beak(0.5 L) only. what the best method to get a good result by use...

06 July 2018 8,345 1 View

Hello my friends, what the best and easy method for synthesis Fe3O4 nano particles?

I need to synthesis Fe3O4 nano particles with size less than 20 nm.

04 May 2018 9,980 2 View

How i can synthesis Magnetic Prussain Blue reduce Graphene Oxide?

Hello, I have synthesized Prussian Blue reduce Graphene Oxide nanocomposite. I need to add magnetic properties to this nanocomposite. what the best procedure to this work?

09 October 2017 7,089 1 View

Prussian Blue reduce graphene oxide nano- composite to removal cesium ion from water

01 January 1970 1,312 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

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

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

What are some underexplored theories and concepts in Activated Carbon as A Water Filter?

Hi, me and my team mates are currently planning to pursue the topic of Activated Carbon from Coconut as a Water Filter. And we would like to ask for your suggestions and knowledge on what specific...

22 February 2021 6,569 3 View

How to extract water soluble amino compound from after aqueous work up?

4-Dimethyl amino pyridine is used in reaction.Product formed contains amino group along with amide & is highly water soluble. To remove 4-DMAP aqueous work up done. Please give solution. Thanks.

21 February 2021 1,883 1 View

What are some underexplored theories and concepts in Activated Carbon as A Water Filter?

Hi, me and my team mates are currently planning to pursue the topic of Activated Carbon from Coconut as a Water Filter. And we would like to ask for your suggestions and knowledge on what specific...

21 February 2021 7,561 4 View