What is the best column temperature program to analyze BTEX concentration in dichloromethane extractant using GC-FID method with hydrogen carrier gas?

I tried the temperature program below to draw my calibration curve using splitless injection but the peaks I got were so small and broad in the concentration range of 5 to 50 ppm. I was wondering...

19 November 2020 4,531 3 View

What can be the reason for increase in spectrophotometer absorbance for the same solution with the same pollutant concentration?

I am using a UNICO SQ-2800 single beam spectrophotometer and a quartz cuvette. before, I had measured the absorbance of a 10 ppm methylene blue solution (DI water solution) at its peak wavelength...

09 July 2020 4,970 6 View

Does anyone know if there is a reliable method to determine oil concentration (crude oil to be precise) using a UV-Vis spectrophotometer?

happy new year fellow researchers, I'm working on treating synthetic oily wastewater made from mixing distilled water, crude oil and surfactant.

31 December 2019 6,295 3 View

What is the statistical range of 13C and 15N delta notation standard deviation?

I am currently working with EA-IRMS and I repeat my experiment three times for each of my samples. I wanted to know the standard deviation range for my data received by the instrument. Thank you...

15 March 2019 8,892 5 View

Is disk fusion test a good way of evaluate for peptides and enzymes?

the peptide which i have tested is about 100aa(hepsidin+ hydrophobin) and i haven't seen any inhibition zone, can it difuse through the muller hinton agar?

10 December 2018 7,552 2 View

How should keep my Forest plot from reflecting my continuity correction in event/total?

Stata would faile to conduct metan, until I changed my 0 mortalities in Excel to 0.5 as a continuity correction, and exported the sheet to Stata. What can I do to prevent this to be shown in the...

19 November 2018 6,612 2 View

What transform or techniques can help in solving or analyzing functional differential equations?

laplace/fouriers transform and some techniques like operators/wronskian ... are useful in solving linear and nonlinear differential equations. however is any such techniques or transformation to...

14 December 2017 1,068 3 View

Can Multiple sclerosis(MS) disease be cured with Electrical Stimulation ?

Multiple sclerosis(MS) is demyelinating disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged . In some cases we use FES ( functional electrical...

17 September 2016 7,422 3 View

What topics are relevant to smart grid?

smart grids is an active research topic in various disciplines . here I am looking for all disciplines and fields that are kinda involved in smart grids research and industry. the most important...

05 September 2016 9,837 13 View

What are the best references for SigInt , ELINT and COMINT?

there are huge amount of reference in the field of SigInt , ComInt And Elint. but there should be a few basic and selfcontained reference in each of those. so please if you know any references ,...

28 February 2015 3,253 1 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

What is the best way to keep an anaerobic chamber anoxic in the absence of hydrogen?

I'm a graduate student who works with an anaerobe, so I often work in an anaerobic chamber. I've been working on an assay that involves the steady-state of the quinone/ quinol pool. Anoxic...

03 March 2021 2,971 1 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 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

How to write a scientific report?

We are analysing scientific reports at University in great detail, so I wanted to find a scientific report about how to write a scientific report. Including detail such as what information to put...

02 March 2021 7,602 4 View

How does Scientist/RG community evaluates a case study article and the impact of it on a researcher career?

An article that is published as a case study in the SJR listed journal. How much value is added to a researcher career? How it is evaluated by a scientific researcher/University admission...

02 March 2021 9,661 3 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

Apart from Nanosilica and CNT's what are the other nanomaterials readily available to use in concrete mixture?

Nanotechnology in concrete materials

01 March 2021 3,379 3 View

Tooth extraction and subsequent dental implant placement in Sprague-Dawley rats induce differential changes in anterior digastric myofibre size and ?

01 March 2021 7,254 3 View

What are the most relevant MSc proposal topics for Petroleum Production Engineering at the moment?

I am a Petroleum Production Engg MSc student at Robert Gordon University in Aberdeen and I am in the process of selecting a topic for my MSc Engineering Investigation proposal. I would very much...

01 March 2021 7,396 4 View