Reasons for ticking sound from foreline oil pump in GCMS?

More Salma Salman's questions See All

Dear all , i need answer for those question :How can you prepare and seprate nanobiomaterials, prepare of surface modification of metal particles ?

i need to general methodolgies

31 December 2015 3,702 3 View

Can anyone suggest a suitable solvent for GCMS?

What is the most preferred solvent for dissolving a sample prior to injection on GC/MSD especially for pesticide analysis?

06 July 2014 4,916 29 View

Inlet in GCMS

what's the function of inlet in GCMS , and what's the advantages of Multi mode inlet over other types ?

06 July 2014 9,148 1 View

How can I calculate LOD and LOQ for sugars in honey (fructose, Glucose ,Sucrose) when they are measured by HPLC , RI detector, NH2 Column?

01 February 2014 9,299 8 View

What is the best LC - Column for carbohydrate analysis?

If I have the choice between 2 amino columns for carbohydrate analysis: Luna amino column from phenomenex and Pinnacle from restek which one should I choose?

10 November 2013 3,452 6 View

Does anyone have experience with amino acid determination of amino acids by GC-MS using a EZ-Fast kit?

Does anyone have experience with amino acid determination of amino acids by GC-MS using a EZ-Fast kit and its advantage over an amino acid analyzer.

08 September 2013 4,639 4 View

Citric acid, malic acid and lactic acid by HPLC

I need a standard method for the determination of citric acid, malic acid and lactic acid in antiseptics (detergents) by HPLC

01 February 2013 6,731 7 View

How can the lactose content in milk be determined using HPLC?

Looking for a method to do this.

11 December 2012 7,093 8 View

Rezex column

does any one use rezex column for carbohydrate analysis by HPLC?

09 October 2012 10,030 0 View

Rezex column for carbohydrates analysis

Does any one use rezex column for carbohydrates which is an ion exchange column? Is it more accurate than amino column for sugar analysis?

09 October 2012 6,257 13 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

How to heat polymer for about 130° without oil bath ?

is there any other way to heat a polymer evenly other than oil bath if so what are those and how to use it

06 August 2024 947 1 View

Do you think can be any gas and oil bearing rocks in Eastern part of Iran?

I want to know more about petroleum deposits in Iran.

02 August 2024 8,725 3 View

Heavy Crude oil PVT Data?

Hello i need heavy oil PVT data having viscoisty of 2000-3000 cP. If someone have it or research papers about it, kindly share it with me Thanks

25 July 2024 6,940 1 View

What are solutions of Euler's hypergeometric diff. equation if $c- a - b$ is an integer ?

See the enclosed file. In https://en.wikipedia.org/wiki/Hypergeometric\_function we can find The hypergeometric function is a solution of Euler's hypergeometric differential equation $$...

25 July 2024 4,125 0 View

What are the most PROBLEMS of HYBRID nanofluid in oil industry ?

explain your idea

23 July 2024 1,197 0 View

What strategy should be adopted to calculate topological indices efficiently?

Most of the time it is observed that in many manuscripts there are several typo error of topological calculation errors of calculation and partition of edges what ever the type of partitioning it...

22 July 2024 811 0 View

Do you think can be any gas and oil reservoirs in central of Iran?

I want to know more about gas and oil reservoirs in Iran.

14 July 2024 3,350 2 View

Can anyone identify the tick species ?

Can anyone tell me the tick species

13 July 2024 7,146 6 View

Can an average household DIY spot welder be used for pouch cell electrode tab?

Would an average spot welder suffice for welding tabs for pouch cell electrodes instead of an ultrasonic one? Why would an ultrasonic welder be better than a regular spot welder?

10 July 2024 8,763 0 View