What is most important world news last month ?

More Najib Abou Karaki's questions See All

Calculation of dilution factor for fumonisin extracted rice cultured with fusarium species?

hello I would like to ask for help regarding calculation of dilution factor to get the amount of mycotoxin per gram of sample. the extraction protocol as fellow: -ground 5 g of sample with 25 mL...

29 November 2020 1,831 15 View

Is it possible to use 100% Ethanol as mobile phase for C18 or any reversed phase columns?

I want to separate 2 compounds on HPLC, and I have made the preliminary studies on TLC using reversed phase plates and 100% ethanol as mobile phase which achieved complete separation. Now I want...

13 August 2020 2,229 3 View

How to calculate the amount of toxin per gram of wheat?

hello, I am working on the extraction of trichothecenes from the grain of wheat and I would like to ask how is it possible to calculate the concentration of toxin ug per gram of wheat? the...

17 March 2020 7,469 3 View

How I can get source code for 802.11a PHY layer in matlab without using simulink?

27 December 2019 2,191 3 View

I need a simple method for treating raw wood with nanoparticles ?

i need a simple method for treating wood with nanoparticles preferably without conditioning

12 August 2019 4,647 4 View

Please someone tell me about IC50 on radical scavenging assay?

I've been measured the percent of my concentration series (R2 = 0.998) but the data weren't covered value more than 50%. Should I repeat my experiment or I just extrapolate the regression...

29 July 2019 2,899 5 View

Is there any method (green one) to produce SrCO3@NiO nanocomposites?

17 March 2019 6,377 4 View

What are the limitations for colorimetric in computer vision technique to extract object features with noisy background?

Combination of morphometric and colorimetric has been applied for feature extraction in detection algorithm. In noisy background, this CV technique facing wrong identification results as well as...

20 August 2018 845 6 View

Log phase of E.coli?

hii all, i am culture a E.coli bacteria with LB Broth, what the Appropriate condition that i can growth the E.coli (temperature, pH, Shaking, time) ? and how i can ensure that i have a E.coli in...

28 May 2018 7,531 2 View

How to validated the free radical inhibition on the following equation?

Dear All, I have find the different equation as usually to use for dpph inhibition on extract. How to validate the result that the equation was correct Please check the equation formula on the...

03 May 2018 1,394 5 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Does any one can help me choose a reasonable basis set for intermediate metal ions interactions with guanine (i.e Fe2+, Mn2+, Cu2+ and exc.)?

Hello every body Does any one has any idea to help me choose a reasonable basis set for intermediate metal ions (i.e Fe2+, Mn2+, Cu2+ and exc.) interactions with guanine or other DNA organic...

01 March 2021 6,187 2 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

Its effect appears in real part of ac conductivity also. Can anyone suggest any reason behind it?

26 February 2021 3,487 3 View

What might be the reason for obtaining two bands in plant genomic DNA extraction?

I got a thin band and a thick band i guess it would be the genomic DNA and the 260/280 ratio is 3.

21 February 2021 6,523 6 View

Methodological confusions regarding deductive and inductive reasoning, hypothesis and theory test?

Hi Colleagues- What do you think about the following methodological issues: 1. Is it methodologically wrong to formulate quantitative research questionnaire based on inductive reasoning? 2. Is it...

21 February 2021 4,634 6 View

What is the reason film thickness increased?

what is the reason film thickness increased when increased doping concentrations give some reasons The measured film thickness is 156, 282, 394, 548 and 681 nm for 0, 1.5, 2.5, 3.5, and 4.5 wt....

17 February 2021 8,987 5 View

Esraa T. Al-Azawee

Iraq Just Declared Victory Over ISIS.

Iraq's prime minister formally declared victory over ISIS in his country on Saturday after three years of devastating conflict that killed tens of thousands of people and displaced over 4 million.

Furkan Alaraji

Iraq victory over ISIS. no one was imagine that

regards

Azedine Boulmakoul

peace reigns on earth ... no war ... only joy and respect between humans ...

a dream of the last month :)