Calculation the Pump power needed in a pressurized flow system?

Hi all, I am design now a liquid high pressure flow system to be used up to 50 bar, and I am having some doubts concerning how I can estimate the pump power. Besides the pressure drop in the...

15 December 2020 8,411 1 View

Design of a membrane system to remove CO2 from a flue gas current?

Hi all, I am trying to design a membrane system to remove the CO2 from a flue gas current, and I am having difficulties in finding information. Does anyone have any technical information,...

15 December 2020 3,655 2 View

Can the potential of LIPIDMICS improve the diagnosis and understanding of metabolic changes in various neurodegenerative disease (PD, HD, AD, MS, etc?

08 November 2020 7,209 1 View

What pressures should I choose in a reheated rankine cycle?

09 October 2020 9,117 4 View

I want to measure cytokine levels in mouse spinal cord tissue and I can not decide which method is best, a cytokine array or ELISA?

Hi everyone. So I need to measure different cytokines in mouse spinal cord tissue and I can not decide which method is the best one, a cytokine array or ELISA. Does anyone that has experience in...

26 July 2020 1,757 2 View

Anyone interested in Collaborating on Covid-19 Pandemic and Learners' Satisfaction?

The Covid-19 pandemic, described as unprecedented, has forced many educational institutions to switch from traditional or conventional (physical) mode of learning to a more flexible and digital...

15 June 2020 1,258 32 View

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Nutritional science has provided functional foods with the required amounts of natural antioxidants, vitamins, fats, proteins, polyphenols, carbohydrates, and other components required to maintain...

03 June 2020 7,377 1 View

Is there any protocol capable of simulating an epileptic seizure in vitro using direct electric stimulation?

I am trying to simulate epileptic seizure activity in cell cultures by using direct electric stimulation. However, I am struglling to find an acessible and relatively easy-to-use protocol. Thank...

28 January 2020 4,951 2 View

How can I map brain in live rats after a certain stimulus without an imaging technique?

I need to look for brain rat regions activation after a certain stimulus made to live animals. The marker to be looking for needs to be maintained fro long periods because the stimulus that I need...

10 December 2019 8,626 2 View

How to avoid non-negative solutions in ODE solvers in R?

I'm using the package deSolve in R to model a biological ODE system, however I have the problem of, with certain parameters or with certain initial conditions, the ode solver produces negative...

09 December 2018 7,114 6 View

Would fecal samples stored at -20C for over a year impact metagenomic analysis?

Dear All, I have access to some rodent fecal samples that have been stored at -20C instead of -80C. Anyone have experience with the impact of stowage condition on comparative metagenomic analysis...

01 March 2021 2,512 1 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

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 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

Is IMPACT FACTOR justified in case of Taxonomy?

There is huge pressure of getting good impact factor on scholars now a days. On the other hand Taxonomy is a very dry subject and the concerned papers can only get citation in same group of organism.

26 February 2021 5,851 1 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