Ideal samples packaging for edible oils?

Hello everyone, I have maybe a stupid question regarding the right packaging to use when comes to send some oil samples in external labs. Do you have any advice about that? Is there a risk that...

18 January 2021 7,826 4 View

Alternative to use of ethanol in extraction process?

Dear all., I am using ethanol as part of the extraction process of Chlorella vulgaris carbohydrates. Since I am trying to scale up a bit the whole process, I should use much more ethanol, that in...

27 August 2020 1,875 5 View

Do I have to activate NR8383 rat macrophages with LPS before incubation with particles and investigation of cytokines release?

Hello everybody, I'm planning to investigate the in-vitro release of different markers (CXCL10, INF-a, IFN-b, 1L-1a, IL-1b, IL-6, free DNA) by NR8383 rat macrophages, upon incubation with several...

20 August 2020 8,791 1 View

Do you know if Covid-19 dataset is available somewhere?

I'm searching for a numerical dataset about the virus. I found only daily statistical data but i would like access to single patients data. Does anyone know about it?

09 March 2020 6,626 85 View

How do I report stats for a zero inflated negative binomial model?

I need to report my statistical findings in a paper but I am struggling to report the output from R. how do I treat the two sections (Count model coefficients and Zero Inflation model...

28 January 2020 1,422 2 View

What statistical method would you use to analyse point count data on butterfly migration?

I have a set of data to analyse on butterfly migration. Unfortunately my stats skills are not as good as my field skills! Me and my peers have counted the amount of butterflies migrating in one...

09 January 2020 8,150 11 View

How to choose a suitable journal?

Dear researchers, I know some sites that can help to choose a suitable journal to a given manuscript, namely: journalfinder.elsevier.com journalsuggester.springer.com journalfinder.whiley.com can...

13 October 2019 1,453 3 View

Buffer without monovalent salts, can I use Tris?

18 April 2018 8,432 1 View

Alternative to PBS buffer with low salt concentrations?

Hello all, I find myself in need to perform serial dilution of E.coli cells for a luminometric ATP assay. Normally for serial dilution I would use PBS, but from what I understood the...

18 April 2018 5,359 3 View

Toxicity of H2O2 against coli?

Greetings, I am currently trying to determine the toxicity of the effluents of an Electro-Fenton reactor with macrotoxicity method and colony count. The concentrations of H2O2 I calculated...

13 January 2018 1,660 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 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

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View

Do you kow of any database containing data on retention time, log P and polarizability for a large number of molecules?

Hi, I am a chemistry undergraduate doing my dissertation project on HPLC. In my project, I need to predict the HPLC retention time of 20 aromatic molecules, the calibration set. To do this I will...

24 February 2021 2,602 1 View