How do wood moisture meters function when applying on live trees?

Eleven months ago I girdled 17 trees and measured the moisture content, at the place where they had been girdled, with a wood moisture meter. Typically, the moisture meter showed a reading of...

26 December 2020 7,761 2 View

Statistical test: 1 nominal independent variable and 1 dichotomous dependent variable?

I have a dataset with one nominal independent variable with 10 different levels and one dichotomous dependent variable. What would be the appropriate statistical test to compare the different...

09 December 2020 8,834 29 View

Where can I find a more pure source of trichloroacetic acid (TCA)?

I am analyzing nucleotides from TCA-precipitated cell extracts by HPLC coupled to UV detection (270 nm) and there is an interfering peak coming from the TCA itself. I have tried some sources of...

07 June 2020 387 4 View

WIll conservation of impulse from weight drops on floors with mats lead to a higher low frequency vibration level in the floor slab?

Weight drops generates vibrations in the floor they hit. Impulse mdv must be conserved, even if the floor or mass is cushioned with mats. Cushioning leads to less high frequency content in the...

17 February 2020 9,807 3 View

How can ion pairing agents cause peaks to split?

I have previously made a lot of nucleotide analyses with tetrabutylammonium as ion pairing agent but decided out of curiosity to try primary amines instead and then made a strange observation. One...

03 October 2019 6,864 13 View

We are running a citizen science project on tree- and forest lines. Are there any others out there doing the same?

We have made a mobile app for registration of tree- and forest lines in Norway. We would like to compare our results with similar projects. You can see the results here:...

03 September 2019 1,972 3 View

How does the solubility of the buffer in the stationary phase affect resolution in ion-pair RP chromatography?

I analyze nucleotides with tetrabutylammonium ions as ion-pairing agent on a C18 column and I have made an observation that the resolution of the peaks often decreases when I use buffers that I...

27 August 2019 2,030 1 View

How do I know that the fittings in HPLC are optimal?

I usually do not get as high plate numbers as claimed by the manufacturers and been thinking about how I can know if the fittings (nuts + ferrules) are perfectly seated or not. I have used ACE and...

16 July 2019 5,867 15 View

Bottle but not textile PET recycling - why not?

PET bottles are conveniently recycled into fibres by remelting and spinning. How come there is no fibre-to-fibre polyester recycling by re-melt-spinning? Is it due to degradation by i) hydrolysis...

24 June 2018 9,771 14 View

Whole mouse spinal cord immunolabeling in embryos/neonates. Easy?

Dear fellow scholars, We have a mouse line with eGFP and tdTomato labeled axons going from the brainstem to the spinal cord. We are going to clear the spinal cord (using iDisco) in embryos and...

21 March 2018 367 2 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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

How to write a scientific report?

We are analysing scientific reports at University in great detail, so I wanted to find a scientific report about how to write a scientific report. Including detail such as what information to put...

02 March 2021 7,602 4 View

Could any one guide me, to write research proposal for grant? ?

We have one plant, the local people using this for controlling blood sugar, the toxicity and antidiabetic activity of the plant is not reported yet, please guide from whag should be the process ?...

02 March 2021 2,300 1 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Energy minimization in LAMMPS using NVT ?

How do I do energy minimization in lammps with NVT ensemble ? I am using the following command and it does not seem to work. It stops at extremely high energy and gives me the error zero search...

01 March 2021 2,294 3 View

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01 March 2021 3,905 5 View