Hello Dear Scientists? Phytochemicals VS Synthetic Chemials? Which one better and Why?

Dear I am working on obesity and writing a review article. I want to add the topic that Why Natural products (Phytochemicals) are more beneficial than synthetic ones? I know that they have less...

02 March 2019 693 2 View

Does filteration effects the crude extracts activity?

Dear Scientists, I applied the pure crude extracts (without filtration by syringe filter) on colon cancer cell lines and got some good results. When I repeated the experiment with filtration by...

10 November 2017 6,844 0 View

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I have done the extraction with 90% Aqueous Ethanol of 25 gms of the sample and then filtered and then evaporated the solvent. After this, I did Lypholizations and after lyophilization, I got 0.5,...

06 July 2017 6,745 0 View

Sticky sample after Lypholization

Dear scientists, I lyophilized my plant samples and after lyophilization, for some sample, I got a very good fine powder but for some samples I got a sticky solid form just like gum(Not fine...

06 July 2017 5,837 0 View

Total Triterpenoid determination.?

04 May 2017 3,628 3 View

Request for Article for (Triterpenoids) taraxasterol and its actate HPLC analysis??

hello every one. Can anyone send an article in which method of gradient elution for triterpenoids like taraxasterol and its acetate has been analysed by HPLC by using different gradient...

02 March 2017 9,122 3 View

Important Question

Dear Scientists, I am confused now. I did extraction from plant with 90 percent ethanol at 40 degree centigrade in reflux condensor, then i evaporated the ethanol in evaporator and also in vaccum...

01 February 2017 1,921 3 View

Important questions request about HPLC

For HPLC analysis of Phenols and Triterpenoids, what concentration of standards and samples solutions (In mg/ml or microgram /ml) for injection into HPLC should be used? I just want to know about...

01 February 2017 5,382 4 View

Hello to all scientists. ?

Can any one provide me some good articles for the determination of Triterpenoids by HPLC-ELSD methodology?

31 December 2016 284 0 View

Hello dear Scientists. How every one doing?

06 July 2016 4,420 1 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 is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 View

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 3 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

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03 March 2021 5,360 2 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