What is the optimal ripley ratio for an anaerobic digester?

More Pavel Pšenička's questions See All

What is the best way for mobility estimation in GROMACS?

I need to estimate the mobility of some atoms in the molecule within a molecular dynamics simulation and compare the values for different simulations. I use trjconv -fit rot+trans to fit C-alpha...

19 January 2021 531 3 View

How can one calculate difference between normal pseudo-solution and exact one?

Dear collegs, Let us have a linear system: Ax=b, (1) A is a matrix of (N,N) shape, b, x are vectors of N shape. We decrease number of equations to form a underdetermined system: A'x=b', (2) A' is...

11 November 2020 8,549 2 View

How is theoretical proportion of the total organic carbon of PLA (polylacitc acid) ?

Dear Sirs, I have measured the proportion of the total organic carbon (TOC) of polylactic acid (PLA) method DIN 19539. The results are 35,1%. Is it correct? How is the theoretical proportion of...

04 November 2020 6,598 1 View

Is there any monthly or bi-monthly 'free' Scopus or SCI indexed journal?

Looking for a fast-track journal to publish one of my papers in the field of image processing for non-hodgkin leukemia cancer cells detection method.

02 November 2020 5,289 3 View

How long do the antibacterial coatings work?

Dear all, I am looking for publications dealing with the long-term stability of antibacterial coatings. I need to know if the coating still works even after months or years. The latest term I...

06 October 2020 1,726 5 View

Someone has replaced the abstracts of my papers by entirely wrong texts. How can I correct this?

This appears to be a pure sabotage. Someone has thrown out my abstract - so far I discovered two - about scarce rationality, and about institutions in evolutionary economics - and replaced...

17 September 2020 1,994 3 View

How to statisticaly analyze distribution which is very skewed to low values (like Pareto distribution or similar)?

I have results of porosity analysis from CT data which is a very skewed distribution (looks like Pareto distribution or similar). I have data from a few samples which I want to compare about the...

14 May 2020 9,595 9 View

Which social media monitoring system do you prefer in your country?

Hello, colleagues! Which social media monitoring / listening system do you prefer in your countries? In Russia we mostly use Brand Analytics and Youscan.

23 January 2020 4,619 7 View

Why Antennapedia Control peptide inhibits the reactive oxygen species production in human blood?

Hi all, I use MyD88 Inhibitory Peptide (more details here: https://www.novusbio.com/products/myd88-inhibitor_nbp2-29328#datasheet or https://www.invivogen.com/pepinh-myd#about) to inhibit the...

04 January 2020 2,207 6 View

How to estimate a quality of single tracks fabricated by selective laser melting of a new Al-Zn-Mg alloy?

Dear friends, We approached toward SLM of a new Al-Zn-Mg alloy using single track experiment. The initial feedstock powder was ball-milled (not atomized). More than 10 tracks fabricated at...

05 November 2019 7,073 3 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

What is the best way to keep an anaerobic chamber anoxic in the absence of hydrogen?

I'm a graduate student who works with an anaerobe, so I often work in an anaerobic chamber. I've been working on an assay that involves the steady-state of the quinone/ quinol pool. Anoxic...

03 March 2021 2,971 1 View

Anyone that can help with details in phosphopeptides enrichment?

Anyone know the amount of protein before enzymatic digestion for phosphopeptides enrichment of serume sample in Ti-IMAC? Has anyone ever use Ti-IMAC(the material is from Chinese company named...

28 February 2021 7,310 3 View

How to model Supercritical water gasification (SCWG) process in Homer software?

Hi everyone How to model Supercritical water gasification (SCWG) process in Homer software?

25 February 2021 4,075 1 View

Uncertianiny in using dry or wet basis in mixing a sediment with fuel oil?

Hello I'm currently working on a topic related to studying the anaerobic biodegradation of TPH in marine sediments. In this work, sediment should be mixed with fuel oil to a concentration of 20 g...

24 February 2021 9,839 3 View

Problem with ligating 2.8 kb insert into 8.5 kb plasmid?

I am trying to clone 2 copies of the same mammalian gene into the pSF-CMV-Ub-Puro Ascl (contains HindIII, KpnI and NheI cut sites) plasmid. This is what the final product is supposed to look like...

24 February 2021 6,310 3 View

Advice on growing lactobacillus species in the lab?

Hello everyone, For part of my PhD project, I'm hoping to grow some lactobacillus species in the lab so that I can create standard curves for a qPCR quantification of a faecal sample. However, I...

24 February 2021 3,157 6 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Is it possible to define biogas as a fuel in the reformer process(scwg) in Homer software?

Hi every one Is it possible to define biogas as a fuel in the reformer process(scwg) in Homer software? Biogas fuel is not available in the options thanks

23 February 2021 6,518 3 View

Sanger Sequencing results not matching experimental results of Restriction Digestion, colony PCR and protein expression?

I have cloned two domains of a gene into two bacterial vectors using cut and paste cloning with different RE sites. I checked the putative clones by colony PCR and Restriction Digestion (fallouts...

18 February 2021 6,736 4 View

Martin Lemmen

Can you give an exact definition of the RR? Over here (Germany) an often used value is the FOS/TAC, translates as ratio VFA to total inorganic carbon. Maybe a transform between RR and FOS/TAC can be found, then I might be able to help.

Pavel Pšenička

Hi Martin,

I think we are talking about the same think. RR is same as FOC/TAC. RR is determined by alkalinity using two step pH (5.75 and 4.3) to determined amount of bicarbonate and VFAs. It may vary in set pH, but principle is the same.

Hi Gauri, thank you for your answer. Can you refer any literature saying that RR should be lower than 0.3?