what are the PELs for coal and silica dust exposures in underground mines for Russia, Indonesia, Kazakhstan?

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Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Is this a facetotecta nauplius?

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08 August 2024 3,746 4 View

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

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31 July 2024 2,033 1 View

Does soybean seed coat or cotyledon contain chlorophyl or flavonoids? What types? determined by paper chromatography? other methods (high school lab)?

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25 July 2024 7,498 2 View

Does post-translational protein modification cause devisions on observed pI verses calculated pI?

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24 July 2024 8,076 3 View

How I can add anew research in my account ?

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21 July 2024 7,545 0 View

Promotor observation in region annotation of RNA RIP-seq?

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18 July 2024 1,579 2 View

Can Document Analysis be used as the only method of research?

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18 July 2024 4,218 0 View

How much sample we are required to do a pilot study for standardized an Achievement Test?

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17 July 2024 5,633 4 View

Masonry Interaction Module ABAQUS?

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16 July 2024 5,047 0 View

Are there any good simple systems or platforms to recommend?

In order to show people the beauty of control and enhance enthusiasm for learning control theories, are there any good simple systems or platforms to recommend?

05 August 2024 10,034 1 View

Why do exism movements become permanent dictatorship threats within liberal democracy thinking under majority rule-independent rule of law system?

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04 August 2024 8,125 3 View

How Social Media Affects Your Mental Health ?

How Social Media Affects Your Mental Health

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Senescence-associated beta galactosidase staining is False Positive in control group?

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02 August 2024 6,735 1 View

Are current regulations effective in preventing cancer caused by toxins?

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02 August 2024 4,474 2 View

How does social media influence people's dental habits and interest in aesthetic dental treatments?

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01 August 2024 9,349 2 View

Some new emerging problems on application of RL for scheduling in IoT networks?

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01 August 2024 8,754 2 View

How to make a Lateral flow control line more uniform?

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31 July 2024 4,510 3 View

What is effective targeted chaos?

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28 July 2024 473 1 View

What are the important scholarly articles related to 'Use of Likert Scale in social science research' ?

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Michael Funke

I Think research in this would be found in the US and UK.

Azamat Abdurashidovich Umirzoqov

Can anyone explain if the excess pore water pressure in unsaturated soil dissipate when the pore water pressure is is still negative? And

Anshu Kumar

In case of India from 2017 regulation has been updated which says maximum dust exposure a person can have is 2mg/m3 provided if free silica content in air is less or equal to 5%. While if free silica % is more then 5% then dust exposure will be limited to (10/%free silica in air).