What is the pH of skim milk at 6 oC?

More Mona Mahmoud's questions See All

What is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 View

Is There are any idea to achieve H NMR signals for swollen compound ??

the samples are not completely soluble - just swelled the solvents that's mean the sample may be partially soluble any suggestion, please

16 February 2021 8,801 3 View

What is the best way to do symmetry in ANSYS Fluent for flow between two concentric cylinders ?

I am working on Taylor Couette flow between concentric cylinders and the results are correct for the full case. however, I wanted to do symmetry case to improve the mesh. I have tried periodic...

11 February 2021 2,193 6 View

What is the success rate of the e-learning plan in achieving the objectives of the curricula?

I need to know the reliability of the evaluation results and the rate of achievement of the course objectives, Thank you (*-*).

02 February 2021 7,828 7 View

What is the success rate of the e-learning program in your country during the time of Covid-19?

I need to know the extent of the success of the e-learning plan in countries of different capabilities, Thank you (*-*)

02 February 2021 4,712 15 View

How can I get good bands by silver nitrate staining on SSCP method?

Hi Dear colleagues This was my first experience on SSCP, and I couldn`t get any band by silver staining! Staining with Et Br was successful. I mixed the PCR product with formamide loading dye,...

01 February 2021 8,788 6 View

Why Selenium nanoparticles synthesized by PEG 200 could not be scaled up ?

I could not synthesize Selenium nanoparticles by PEG 200 at up-scale ( more than 100 ml) as it got aggregated while at small amounts it works fine , I work with 850 PPM using selenium powder in...

08 January 2021 10,049 1 View

Solving a third order polynomial matrix equation?

I want to solve the following matrix equation with respect to the matrix variable X which is a real symmetric positive definite matrix. The given matrix A is real and symmetric, "a" is a scalar,...

04 January 2021 2,945 7 View

What is the best method to add nanoparticles in organic solar cell simulation using silvaco software ??

i built the structure of the organic solar cell (ito-P3HT_PCPM-PEDOT_PSS-al) then i used BEAM statement to add sunlight so what is the best method to add nanoparticles in layers

03 January 2021 7,107 11 View

How to Calculate Local and Average NUSSELT NUMBER IN FLUENT ANSYS ?

I am simulating a single flow in a 2D tube with a uniform heat flux applying on the outer surface. I found difficulties finding the Nusselt Number or in other words a correct way to obtain...

26 December 2020 4,054 7 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

What are the main reasons to grow Escherichia coli O157:H7 and Salmonella Typhimurium in food products under refrigeration storage 4 C?

24 January 2021 9,987 3 View

I am trying to simulate phase change of refrigerant inside pipe extracting heat from panel in comsol. Can anyone help with how to simulate this?

My model is a rectangular multi layered structure under which refrigerant flows through cylindrical pipes. A heat flux of 600W/m2 applied on panel and internal forced convection is used for...

20 January 2021 9,478 1 View

How to determinate phosphatidylcholine content in cow milk?

I would like to determinate the phosphatidylcholine content in cow milk. We only have a Shimadzu Prominence HPLC (High Performance Liquid Chromatography) with a fluorescent detector for the...

18 January 2021 8,370 6 View

Is it possible to calculate entalphy of LiBr/H2O or another solution if we know correlation of specific heat without using any software?

17 January 2021 5,522 3 View

The chemical and microbiological properties of camel milk do have a significant effect on shelf life of camel milk powder compared to cow milk powder?

I need to know effect of heat treatments that are made when making camel milk powder on chemical , microbiological properties and shelf life of camel milk powder compared to cow milk powder. Thanks

11 January 2021 7,097 12 View

How to handle milk clotting Issues during media preparation for Screening of Halotolerant Protease Producing Bacteria (with Skim Milk)?

We want to screen halotolerant protease producing bacteria. Since Skim milk (HiMedia) is available in our lab, therefore, we want to screen extracellular protease by this compound/ supplement. We...

04 December 2020 7,657 6 View

How do i calculate the total heat transfer rate in COMSOL (5.4)?

I have modelled a condenser of a refrigerator in COMSOL. I made different designs and i want to calculate which design has the highest heat transfer rate. The way i calculate it now is by: q =...

02 December 2020 306 2 View

How should I store the milk sample in RNAlater?

I want to extract RNA from human breast milk. How should I store the milk sample in RNAlater? And after RNA extraction how can I store the RNA?

01 December 2020 7,183 4 View

How can I determine the mass of a refrigerant (for example R744) in a evaporator when the refrigeration system is not working?

By knowing the specific volume on the inlet and on the outlet, is it correct to assume an average of those two specific volumes?

30 November 2020 3,807 3 View

Jasim Al-Saadi

Cooling cause a decrease in pH value , and this decease is depend on time of cooling .

http://www.lrrd.org/lrrd22/5/amma22098.htm

Antonio Pirisi

Hi, when you are measuring pH, you must to use both the electrode (for pH) and the temperature probe for an automatic temperature compensation.

Heva Ranjith

Most modern pH meters are equipped with a sensitive pH probe and a temperature probe. You will find the fresh sample of skim is about 6.5 to 6.7.