How to calculate the crystallinity of cellulose film?

27 February 2021 2,753 4 View

How does GROMACS calculate the average structure of proteins?

I want to get a average structure from a pdb file containing multiple models. I used the command below: gmx cluster -f input.pdb -s topol.tpr -cutoff 20 -method gromos -av GROMACS...

25 February 2021 6,314 1 View

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The regenerated cellulose film was prepared by zinc chloride/H2O system. The zinc chloride had been washed away in the regeneration process, and the wet film which was not dried had uniform...

18 February 2021 9,538 1 View

R/Python package for time-intensity or progressive profiling in sensory evaluation?

Hi I've been looking for a stat package for my sensory evaluation data (progressive profiled which is a multi-timepoint version of descriptive analysis). Is there any available one to...

08 February 2021 9,170 3 View

How can I make sure the simulation results of the water droplet impacting on the wall using the FLUENT agree with the experimental results?

Dear researchers, I am modeling the process of the water droplet impacting on the wall with a constant contact angle. The specific calculation parameters are as follows: The droplet diameter is...

24 January 2021 1,020 5 View

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11 January 2021 3,284 3 View

Mysterious line across SDS gel?

Does anyone have the similar issue? A line across the denature SDS gel shows up after staining with Coomassie blue and there are many lines in every lane if you take a closer look. This gel had 15...

07 January 2021 5,610 4 View

How can I calculate packing density of particles by fomulas or softwares?

I have all data of particles, such as size distribution, or numbers. Is there any way that I can calculate the packing density of these particles? Assume that all particles are circular.

05 January 2021 4,272 2 View

After cellulose is regenerated in water, a cellulose hydrogel is formed. I want to know if there is crystallinity inside the the hydrogel?

After cellulose is dissolved and regenerated in water, a regenerated cellulose hydrogel is formed. I want to know if there is crystallinity inside the hydrogel, or it will not crystallize until it...

04 January 2021 7,466 4 View

How can I fix the density of system in coarsed grain simulation?

In the process of obtaining the nonbond potential of the Coarse-grained(CG) model, I need to simulate the CG model mapped from the conformation of all atom(AA). AA simulation process is...

02 January 2021 3,643 1 View

How much pre-PCR dilution of mixed-template DNA extracted from pollen (honey) is appropriate for Metabarcoding?

I'm working on pollen DNA metabarcoding to identify the floral composition of honey. How much pre-PCR dilution of mixed-template DNA extracted from pollen (honey) is appropriate for the...

28 December 2020 9,132 1 View

Can children from 1 year old to 15 years be given MODANA and Pfizer Anti-COVID-19 vaccine?

The clinical disease of COVID-19 has been low in children generally and vaccine has been develop.Any evidence of its safety,efficacy and risk for allergy in children? any exemption for children...

23 December 2020 7,177 12 View

Can anyone help in doing SEM of pollen?

Is there any institute in Kerala were v can do SEM studies.

11 November 2020 5,001 3 View

I need info on particular Convolvulaceae pollen, can you help?

Dear colleagues in palynology, paleobotany, and botany I desperately need information/papers on the pollen morphology of the following Convolvulaceae genera: Astripomoea, Calycobolus,...

14 October 2020 8,216 10 View

What is the best method for collecting and preparing pollen from insects stored in 70% ethanol, for visual identification?

Hello, I would like to visually identify and quantify the pollen morphotypes carried by insects which have been stored in 70% ethanol. The insects are Diptera (mainly Syrphids), and Hymenoptera...

20 August 2020 8,859 3 View

Is it possible to remove pollen from museum bee specimens?

I have recently extracted genomic DNA from some museum bees for sequencing, and from first look there appears to be some pollen DNA in the extract. I've had a Google but can't find anything...

25 May 2020 8,423 2 View

Can adult butterfly or moth feed on solid food, such as pollen?

Dear All, Can adult butterfly or moth feed on solid food, such as pollen? It is known that nectar mainly contains sugar but very low level proteins, lipids. If a butterfly only feeds on nectar,...

29 March 2020 6,211 3 View

Species that contains the grass allergen Phl p5?

Does anyone know in which species the grass allergen Phl p5 occurs? It was originally isolated from the grass species Phleum pratense so it must at least occur in that species. It stand to reason...

15 March 2020 8,703 4 View

How different do fossilised and fresh pollen look under the microscope?

I was wondering whether fossilised pollen looks very different from normal pollen when you use bright field microscopy? In particular, do the following change significantly: Morphology...

29 November 2019 1,269 9 View

When doing Scanning Electron Microscopy of pollen samples from basal angiosperm group, is it necessary to do acetolysis?

1. Will there be significant differences in SEM images of acetolysed pollen and pollen fixed in 70% EtOH? 2. This is to study the micro-morphology of pollen structure and ornamentation for...

10 November 2019 5,022 2 View