Can someone please help me to classify the image into alpha, beta and gamma haemolysis?

Dear all researchers, can you please help me to double confirm the result that I obtained in haemolytic test into alpha, beta and gamma group? This is the first time I performing this test and...

05 June 2016 1,063 21 View

Is there anyone who can provide the salting out protocol for butyrate extraction?

31 December 2015 1,956 8 View

Is there any titration method for vitamin A (retinol) detection?

10 November 2015 255 2 View

Does anyone kindly check for me regarding the following protocol for complexometric titration of Zn?

I'm not a chemist and does not know much about the theory behind the zinc titration method. I have a sample and wold like to test for the zinc content. Following is the protocol that I have...

09 October 2014 4,508 4 View

Why will contamination disappear when repeating a test for the same sample on the next day?

Dear researchers, Recently, I have been facing mysterious test results. I was collecting samples of probiotic cultures from a large fermenter tank into 100mL lab bottle under sterile conditions,...

09 October 2014 7,656 4 View

Do you think that zinc, iodine, Vitiman A, Vitamin D3 or Vitamin B2 can reduce the growing rate of probiotics?

Do you think that zinc, iodine, Vitiman A, Vitamin D3 or Vitamin B2 can reduce the growing rate of probiotics?

03 April 2014 5,067 2 View

Can I autoclave the MRS medium with pH 1?

see above

02 March 2014 4,826 1 View

Why is the incubation time for probiotic cells to grow in milk shorter than in MRS broth?

I am wondering why the incubation time for probiotic cells to grow in milk is shorter than in MRS broth. According to the protocol, the bacteria strains need to culture in MRSB for 3 days before...

02 March 2014 9,839 3 View

Can anyone help me to check on the protocol of probiotic microencapsulation?

I did the experiment a number of times but am still not able to get the expected results. I would like to seek help from everyone. The protocol is as follows: 1. Dissolve maltodextrin and...

02 March 2014 6,229 12 View

Will a change in sequence of adding prebiotic and maltodextrin influence the microencapsulation results?

I would like to seek your advice towards the strange result that I have obtained during my microencapsulation process. I was preparing two samples as follows: 1. Add fructo-oligosaccharide...

01 February 2014 3,443 1 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 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

Has anyone used the Illumina ITS1 primer sets?

Hi everyone, Illumina provides a list of primers to amplify with high taxonomic coverage the ITS1 region for further fungal sequencing, but I cannot find the exact amount necessary of each...

25 February 2021 6,969 3 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

Is there any one who can provide a donation of HPV detection and genotyping kits in exchange collaboration fors?

Warm greetings My name is Ayichew S. and I am doing my Ph.D. in Medical Microbiology (on Human papillomavirus). At this stage, I have almost completed a clinical sample Cervical swabs)...

25 February 2021 1,660 3 View

Is there any one who can provide a donation of HPV detection and genotyping kits in exchange collaboration forms?

Warm greetings! My name is Ayichew S. and I am doing my Ph.D. in Medical Microbiology focusing on Human papillomavirus). At this stage, I have almost completed a clinical sample (Cervical swabs)...

25 February 2021 3,612 3 View

Advice on growing lactobacillus species in the lab?

Hello everyone, For part of my PhD project, I'm hoping to grow some lactobacillus species in the lab so that I can create standard curves for a qPCR quantification of a faecal sample. However, I...

24 February 2021 3,157 6 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