How does the N value be counted for gut content analysis?

I read some articles on mollusc and fish diet analysis. The formula for percentage frequency of occurrence stated above: %F0 = Nei/Ne x 100 and percentage numerical abundance : %NI : Ni/N x...

15 October 2020 4,568 3 View

Why is it necessary to vortex and incubate in dark the sample and DPPH solution and other DPPH questions?

Hi all, In the determination of Antioxidant capacity of fruit samples, I used DPPH assay and have a few questions regarding the DPPH assay 1) why is it necessary to vortex and incubate in dark...

30 August 2020 246 3 View

How to renew the Scopus index status of a journal?

Dear Researchers, Our journal (ISSN no. 2070-4658) was part of the Scopus index till 2017. Now, it is not in the Scopus index as the last two years no issue has been published. However, the...

24 August 2020 7,203 3 View

Hello,i extract my plants using rotary evaporator and i got crude extract.How should dilute it?i have no idea on how to dilute it?Can someone helpme?

dilute it in ethanol or dmso? which solution is better as i used 95% of ethanol as my extraction solvent?

23 March 2020 5,971 6 View

Can I set "20 uL reaction volume" in PCR cycler machine, while my actual sample is only 10 or 15 uL?

This is a stupid but quite technical question. We have a PCR machine that has 20 uL minimum reaction, so it can't be set into 15 or 10 uL in the machine. Is this going to affect the result...

22 March 2020 3,497 4 View

Is there any SOP to measure pharmaceutical clean room and if none can we develop our own method to measure the room size?

06 March 2020 866 1 View

How to test degree of polymerisation of aged kraft paper impregnated in oil?

kraft paper was impregnated in mineral oil at different temperatures and duration. my project is to get the DP value at different duration. in order to be measured by viscometer, the sample must...

20 January 2020 2,234 3 View

What is the equation to explain how one possible organic side product is formed in the synthesis of 1-bromobutane?

And show the chemical properties window of this side product. Explain how this product can be separated from the desired product. I have already identified that the possible organic side products...

29 December 2019 6,170 4 View

Validation for Intracerebroventricular Microinjection of Streptozotocin in Rats?

Hi, I'm planning to induce sporadic Alzheimer's disease (AD) in male Sprague Dawley rats (3 months old, 270-350g) through bilateral intracerebroventricular microinjection of 3 mg/kg streptozotocin...

25 November 2019 9,723 3 View

What is the meaning of negative activation energy?

I am prepared (Al, Co) co-doped TiO2 thin films by spray pyrolysis technique. The electrical measurement was performed by the four-probe point method, in the range of temperature 3ok (Room...

22 October 2019 526 4 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View

How to clean up TEM grid with plasma cleaner?

I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...

23 February 2021 3,262 5 View

Magnetismic Gravity in the universe?

MAGNETISMIC GRAVITY What is magnetism? Something magnetic has a + and - charge. If 2 + or - are pushed if + and - are pulled. But what is the main reason for this? Why does magnetism have a pull...

21 February 2021 9,538 3 View

Specify the Burgers vectors for dislocations, which cannot be uniquely identified.?

1. A bcc metal single crystal was sliced along (1 -1 0) plane for TEM study. Assuming that the TEM available is equipped with a goniometer stage which tilts up to 45o. The Burgers vector of...

20 February 2021 2,370 1 View

Can fractal dimension of thin film surfaces affects the electrons energy states?

As fractal dimension of a thin film surface implies the irregularity in the surface. Is it possible that the energy states of the electrons are also affected by the fractal dimension?

19 February 2021 5,509 3 View

Can the intensity of this broad band in XRD mask other crystaline phases present?

I obtained a XRD diffractogram with significant broad band at low 2theta levels, also around 30 2theta another smaller broad band appears. It all points out to the existence of an amorphous phase....

19 February 2021 8,414 4 View

If the electron is a wave, then what is its nature? Is it an electromagnetic wave?

If the electron is a wave, then what is its nature? Is it an electromagnetic wave? Thank you very much,

17 February 2021 9,024 4 View