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

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

Is there any drying method that can be used to replace spray drying?

May I know is there an alternative drying method that can be used to replace spray dryer? The sample used will be encapsulated bacterial cells.

02 March 2014 9,696 1 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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 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

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View