What is the difference between PGE and Acid modified PGE GC Columns for analysis of microalgal fatty acid methyl esters?

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Is Cantor's diagonal method consistent?

The diagonal method is built assuming that, if two figure sequences like r = 0.a₁a₂a₃... and t = 0.b₁b₂b₃..., for some n satisfy the inequality aₙ ≠ bₙ, then r ≠ t. However, this is only true...

26 April 2024 3,677 13 View

How ResearchGate miss my citation of my article?

Hi Representative of ResearchGate; My article "Eating Disorders: Diagnosis and Prosthodontic Management" pubished on BAOJ Dentistry, 2017 has four citation on Website. These are the articles that...

31 March 2024 5,172 1 View

How can I fix the Error code 11011: Vacuum (IF/BK) time out, vacuum too high to start turbo pump?

Midway through the analysis, the argon ran out, and error code 11011: Vacuum (IF/BK) time out, vacuum too high to start turbo pump, appeared. I've attempted a full system restart, but the same...

31 October 2023 5,882 1 View

Biodegradable packaging for liquid food products?

Hi, I am looking research institutes or companies specialized in plastics because we would like to explore collaboration opportunities and learn more about the projects of biodegradable packaging...

22 June 2023 6,619 0 View

It is possible to quantify oxygen gas by ICP-MS?

We are currently looking for the best way to measure oxygen produced by electrolysis and have our Agilent 7900 ICP-MS available. Is it possible to use this equipment to quantify this gas?

19 June 2023 469 3 View

ANOSIM or PERMANOVA for studing vegetation recovery after wildfires?

Dear all, I am evaluating vegetation recovery 1 year after wildfires in Mediterranean forest ecosystems. I have selected two factors: 1) previous (or not) silviculture treatment to wildfire and...

03 June 2023 4,095 6 View

I am researching about the pathogenic fungus Kretzschmaria zonata, does anyone have information about this pathogen in teak?

Currently unidentified pathogenic organisms are causing a disease in 8-year-old commercial plantations of Tectona grandis in Costa Rica. The affected trees are found in groups and isolated, the...

30 May 2023 5,003 2 View

Support to Index a journal un WoS?

Hi everybody, I am the Editor in Chief of Iberoamerican Journal of Medicine (www.iberoamjmed.com). We are looking for someone or a group which may help us to be indexed in WoS. Anybody knows?...

08 May 2023 6,678 4 View

Fractional distillation would be enough to remove the impurities from nitric acid?

Currently, I'm working with ICP-Ms but unfortunately in my country is really difficult to buy ultra-high pure nitric acid. Therefore, I thought of distilling the acid to eliminate the metals...

12 April 2023 5,345 1 View

How to avoid any loss of volatile elements on the digestion of the certified material NIST 1573a?

Currently, I'm trying to set up the optimal conditions for the Agilent ICP-Ms 7900 to quantify three metals: As, Cd, and Hg. But I had poor recovery values (around 50%) Im thinking that maybe I...

16 March 2023 5,892 1 View

Is there any cases algae not using the nutrient from the wastewater and grow normally?

I am working on microalgae cultivation using waste water. The initial concentration of nutrients were less but the microalgae has achieved biomass growth of 2 g/L. The final concentration of...

08 August 2024 4,812 2 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

E-commerce businesses, COVID-19 and Entrepreneurial Strategies (innovation, proactiveness and risk-taking)?

Hello: I am looking for articles that address e-commerce businesses and COVID-19 survivors, as well as Entrepreneurial strategies that reflect e-commerce businesses. Blessings Evelyn Dempsey

05 August 2024 5,332 3 View

Determining the worth of a point improvement in Hamilton Depression Scale?

Dear readers, Thanks for your attention. I am wondering about the health economic problem of quantifying the value of interventions which a) prevent, b) improve symptom profile and c) ultimately...

05 August 2024 3,246 1 View

Conjugation of PEG-Amine to an Amino Acid Using EDC?

I am attempting to conjugate PEG to an amino acid at the C-terminus, for the purposes of producing nanoparticles. I have been told that PEG modified with amine groups can be used for this purpose,...

31 July 2024 2,033 1 View

Is it possible to use a safer acid instead of monochloroacetic acid to convert bacterial cellulose to carboxymethyl cellulose?

Hi, researchers, Is it possible to use a safer acid instead of monochloroacetic acid to convert bacterial cellulose to carboxymethyl cellulose?

29 July 2024 4,570 0 View

My cfDNA extraction protocol using silica beads works with plasma collected in COD SAGM bags but not with plasma collected in K2 EDTA tubes. Why so?

I am currently performing cell-free DNA (cfDNA) extraction from plasma using an in-house developed kit that employs silica-coated magnetic beads. My protocol works effectively with plasma obtained...

28 July 2024 3,559 0 View

AGILENT HPLC 1100 SERIES , any expert available please?

AGILENT HPLC 1100 SERIES operation assistance needed.

25 July 2024 10,045 2 View

What is the Principle of Cysteine-carbazole-sulfuric acid reaction with glucose?

I have been looking for the principle of Cysteine-carbazole-sulfuric acid reaction in research papers and books, but couldn't find it. This reaction is mainly used for the quantification of...

23 July 2024 3,891 0 View

Can sulfuric acid be used to prepare anthrone reagent when it has oxidized and changed color in reaction to light?

Sulfuric acid has changed color to yellow.

16 July 2024 6,964 0 View