Hi. Anyone have come across this issue where the baseline is shifted like this when running the hplc? Is it due to contamination or else?

Mobile phase used is 5mM sulphuric acid , type of column is Bio-Rad Aminex

09 July 2020 9,321 7 View

Hi. Do you have any idea why the peak looks like that as I guess this is the solvent peak produced?

I have run the levulinic acid standard through hplc-refractive index detector with column and detector temp at 63 and 50 degree respectively. Mobile phase used is 0.005 M H2SO4 at flow rate 0.6...

12 November 2019 6,348 2 View

How Transfer data/image from GPU to FPGA using MATLAB ?

Currently I Already did my work to transfer image on GPU and CPU. Apart from that, i try to expand the work with FPGA. Unfortunately, i still searching the suitable method how communicate CPU and...

10 October 2018 2,997 3 View

What is the significance of soil microbial biomass N:P value in the agricultural soil?

The microbial biomass ratio is considered as an important indicator of microbial nutritional balance. High microbial biomass C:N ratio for example, usually indicates unbalanced nutritional...

12 February 2018 1,012 6 View

Which oneis better QTOF or QTRAP?

Dear All Which one is better to determine phenolic compound inside the dragon fruit peel either use QTOF or QTRAP? ESI QTRAP is normal resolution but with ion trapping for better spectrum...

21 April 2017 1,180 7 View

Is there any relationship between antioxidant and antimicrobial activity?

Dear All Kindly to ask you, is there any relationship between antioxidant and antimicrobial activity? since I already extract active compound from dragon fruit peel using distilled water as a...

01 September 2016 4,511 14 View

How to write a good thesis abstract?

What are the components should have in writing a clear and good abstract?

06 June 2016 6,780 24 View

Hi, one question related to correlation. Is it possible for me to execute correlation with a sample n=24 to see the relationship between variables?

26 April 2016 3,619 28 View

What is the recommended amount of PCR product to load on DGGE?

I performed PCR which targets bacterial 16S (using GC968f/1401r) and fungal 18S (using NS1/GCFung), each produced ~400 bp and ~350 bp, receptively. The DNA was extracted from soil sample.Can...

22 April 2016 3,134 3 View

No title

My soil sample is of sandy loam. I've done the extraction protocol several times, precisely as stated in the manufacturer's instruction manual but I did not get any good result. The concentration...

18 March 2016 1,779 2 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 anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

Unknown debris sheets observed in cell culture flasks?

Hi, We culture neural progenitor cells in T175 culture flasks coated with PLO-Laminin. We have successfully grown these cells with our protocol for months. Recently, we observed large sheets...

25 February 2021 3,443 4 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View

How to run repeated measures in mvabund?

I have a dataset of fish species abundances collected from 6 different habitats over the course of 30 years. Fish were collected multiple times per year and environmental variables were recorded...

21 February 2021 3,838 1 View

Is there a method for evaluating nanoparticle adhesion to epithelial tissue in vitro?

I want to measure how well nanoparticles can transfect cells based on NP adhesion properties. In the literature I find people do it in animal studies, and epithelial adhesion helps in transfection...

21 February 2021 7,791 3 View

Any Homemade Organic Synthesis Practices?

Hi everyone, I am a teacher of Heterocycles Synthesis, Is there a home practice that you recommend for undergraduate students? A simulator would also be useful Due to the pandemic, students...

18 February 2021 2,769 4 View

How to get rough estimation of the concentrations of Oxygen and moisture inside the glove box?

Dear colleagues, I was just wondering if you can suggest a good method to get a rough estimation to the concentration of O2 and H2O inside the glove box as unfortunately, our glove box doesn't...

17 February 2021 1,012 3 View

What is the minimum number of studies in each category required for a multiple subgroup analysis to be viable in a meta-analysis?

Cochrane Handbook mentions subgroup analyses are only warranted if there are more than 10 studies (I have 28), and if they are distributed evenly among categories of subgroup. I am wondering if...

17 February 2021 3,467 4 View