Hello everybody, can anybody provide me with Erdetman method of acetolysis of pollen ?

More Asmaa A. Abdelhameed's questions See All

Scopus Index Journal List , 2021?

please provide me the most recent Scopus Index Journals List, February-2021

27 February 2021 3,545 1 View

By mistake I created another account and I want to add the published papers in the new account into the old one and cancel the new one?

I made anew account because I was invited be one of my coauthors and I forgot my password by then

28 December 2020 6,409 2 View

Available Solar Radiation Forecasting Dataset?

Dear RG members, My research team is searching for a real dataset for Solar Radiation Forecasting. If anyone can share us with a true dataset to test our new ML algorithms.

02 December 2020 2,173 36 View

Any available datasets for palm tree pests using thermal images?

We have a dataset about palm trees using thermal images. But, we are trying to find a public dataset to enhance our algorithms. Any help.

25 October 2020 9,997 33 View

Pretrained networks with Adam optimizer?

I have tried different pretrained networks with Adam optimizer, and obtained high performance. However, when I tried it with Alex network, the performance was poor. Could you please help me...

28 September 2020 5,621 1 View

May anyone help me to insert binary data into Popgene correctly?

Hello everyone, I am trying to use Popgene 32 software for analysis of binary data for dominant marker of five ISSR primers across five populations and having 38 loci. Unfortunately the program...

22 September 2020 7,369 4 View

Which Tm should I use in my PCR ?

I have ordered primers from Thermo fisher scientific and in the analysis sheet it has been mentioned two tm The first one is tm 1M na+ 70 and the second is Tm 50mM na+ 48 and each has different...

29 August 2020 6,890 12 View

How to peel off PDMS film from a glass petri dish without damaging it ??

I have prepared 15wt.% PDMS and poured it on a glass petri dish, then let it dry for 72 hr at room temp. after I tried to peel it and it doesn't work, so I am crosslinked in an oven for 3 hr , but...

26 July 2020 9,892 2 View

What is the best solvent for PVDF ?? Dimethyl sulphoxide or Dimethylacetamide??

For membrane preparation PVDF will be used , and I was wondering which solvent is the best for dissolving it, non-Toxic solvent , useful in dissolving other polymers such as PES, PDMS, Peba

05 July 2020 1,655 5 View

May anyone recommend me a source for learning R programming language and R packages for biological research disciplines?

I want to learn R programming language but I do not know a source from which I can start, I need it for statistical analysis of Ecological, Molecular, floristic, and Taxonomic studies.

14 June 2020 4,985 9 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View

Can anyone help with Schistosoma identification?

Can anyone identify what kind of Schistosome species this might be? Morphological features of cercariae and adults resemble Trichobilharzia, though I am fairly new to the field of parasitology...

25 February 2021 7,760 6 View

IF troubleshooting: looking at an intracellular protein that localizes to the cell's and how to reduce increase in signal due to cell ruffles?

I am currently trying to stain for PI3KBeta in MDA-MB-231 cells. My current issue is that 1) beta stains all over the cell and 2) there is an increase in signal at the edge of the cell and this...

24 February 2021 8,582 1 View

Which microtomy technique do you suggest for thin and delicate root sectioning ?And, how to preserve and process the roots before sectioning?

We have thin roots of from 1 year old different species of plants. We are looking into anatomical details of the roots. What's the best method to preserve and process the roots once they are...

23 February 2021 1,898 1 View

How to clean up TEM grid with plasma cleaner?

I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...

23 February 2021 3,262 5 View

How we can measure Kemp % in wool without using of benzene?

Would you please let me to know about the methods for measurement of medullation and Kemp % on animal? My problem is that the wool sampling and sending to laboratory is not possible. So I would...

21 February 2021 7,260 4 View

Asmaa A. Abdelhameed

Thanks Abdullah Hasan

Anna Filbrandt-Czaja

Information about Erdtman's acetolysis you can find https://www.medicinalplantsarchive.us/pollen-grains/step-by-step-acetolysis-procedure.html

http://www.biologydiscussion.com/botany/4-main-methods-of-pollen-preparation-plants/34133

http://www.geog.ucl.ac.uk/~jhope/lab/poll1.htm