Can anyone explain how determine concentration of arsenic in Biological Materials by Radiochemical Neutron Activation Analysis Methods ?

More Samir Begaa's questions See All

Thermal reduction of graphene oxide.?

I am trying to reduce graphene oxide by thermally but I have no proper information regarding this. Can any one help me regarding the details about temperature and time for the reduction of...

23 February 2021 4,155 4 View

How can I calculate volume fraction of MWCNT from a nano hybrid composite ?

I am adding 0.1wt percent MWCNT to glass fiber epoxy composite and want to determine the volume fraction of the MWCNT from this composite but I don't know how to calculate it. can anyone help me...

09 February 2021 8,883 3 View

Functionality on MWCNT can possible without using vacuum oven?

I want to synthesis functional MWCNT from pristine MWCNT using acid treatment but I haven't vacuum oven for drying but I have a normal hot air oven. So may it possible to use hot air oven for...

02 February 2021 8,475 3 View

What is the dispersion relation in polycrystalline graphene?

Hi, We all know the dispersion relation for an ideal graphene in hexagonal lattice. Since graphene is polycrystalline by nature, assuming a perfect graphene crystals with average size La, nm...

24 January 2021 4,747 2 View

Label next to reference in abbrvnat ?

I am using the abbrvnat style, but I want the label to appear next to each reference. For example, I want to have: [Atzori et al., 2010] L. Atzori, A. Iera, and G. Morabito. The Internet of...

28 December 2020 7,073 2 View

What is it the relationship between photochemical efficiency and a chlorophyll a fluorescence in a plant ?

I hope somebody could help in explaining this point

10 December 2020 513 4 View

What might be the reason for the appearance of 'black stringy/shards' in cell culture?

When using a tissue culture treated plate, I started to run into these weird black stringy/shards. If it were contamination, my best guess would be that it is a fungal contamination. However I do...

18 November 2020 2,979 11 View

Seeking database/online tool/script to predict drug-parasite protein interaction ?

Dear All We have revealed good results of certain fungal against cercaria of schistsoma. No we are seeking a good online tool, or any other methods to predict the extent of interaction between...

12 November 2020 9,724 1 View

How can i implement LEACH protocol for nRF24L01 ?

i need to build a WSN using nRF24L01 (Which is the only available transceiver in my country ) with LEACH protocol (i know the theory of the protocol ) but i don't know how to implement it .

14 September 2020 6,398 2 View

How to compare means and standard deviations in 3 groups?

Hello all, I would like to compare the means and SDs of 3 groups. The only data I have are sample size, mean, and SD for each group as presented below: Group 1 : sample size 1: 250 mean 1:...

03 September 2020 8,756 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 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

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 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

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

Mushtaq Ahmad

Attached article may be useful;

RADIOCHEMICAL SCHEME FOR ARSENIC DETERMINATION

IN BIOLOGICAL MATERIALS BY NAA

Ewelina Chajduk, Rajmund Dybczyński

Mustafa Sohrabpour

Instrumental Neutron Activation Analysis (INAA), works quite well with environmental samples such as SPM in air, dust, soil, sediment etc. for AS detection. This same method has also been applied to fish, shrimp, plants and algaes, alas no As was present in these samples.

Mohammed El Amine Benamar

Dear Samir, you can see the articles below, may be helpful

Samir Begaa

Many thanks for all