Could someone shed the light on differences between bond bending and bond stretches in IR specs from the FTIR analysis?

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Desperate help interpreting my interaction effects in logistic regression?

Road blocked also...... I am baffled by the ZTC term. In this case it would be ZTC =1 and the course mode = 0 (traditional). So why is the odds ratio higher than the odds ratio for ZTC*hybrid?...

23 June 2022 5,858 9 View

How do you interpret increase in odds when looking at interaction effects?

Hello there! I need help with this interpretation and would like to ensure I am speaking of this correctly. I am looking at odds a student is successful in a course. The study variable of...

15 June 2022 2,796 0 View

Anybody can share me experience of using Genomic DNA extraction from bacteria using Qiagen Kit 20 G?

Please find detail: https://www.qiagen.com/us/products/discovery-and-translational-research/dna-rna-purification/dna-purification/genomic-dna/blood-and-cell-culture-dna-kits/?catno=13343 The...

28 March 2022 1,507 0 View

Add a random error component drawn from a distribution with the same properties. How?

I don't quite understand what exactly they did. How do you actually add a random error component to predicted household income? The Impact of Remittances on Poverty and Human Capital:...

10 November 2020 4,505 2 View

FGT poverty index derivation?

Can anyone show me how the squared poverty gap index can be rewritten as H/n*[u2+(1-u2)CV2)] as in the picture. Step by step please. I have been struggling trying to figure out how to decompose...

07 September 2020 7,072 8 View

Can we run an EFA before a SEM?

I'm conducting a study for my PhD thesis. I've got some constructs from the literature, but the items to measure the constructs were modified (some were added and some were removed). In this case,...

08 June 2020 6,165 9 View

How can we calculate the crosslink denisty of a polyurea sample with a lot of air bubbles?

I have a few polyurea samples and I need to determine the crosslink density. Unfortunately the samples arrived with a lot of air bubbles thus mechanical analysis and swelling is not an option. The...

30 October 2019 3,718 4 View

GDNA stability at 55 degrees?

I was extracting genomic DNA from Streptomyces the previous day and left my gDNA in the oven (55 degrees Celsius) to dry at the very last step. I had to rush off for a seminar and completely...

11 September 2019 9,670 2 View

Difference between pET-28a vector and pET-28b vector?

I'm looking for a pET28 vector with cleavable N-terminal His tag. I noticed there are these two variants (pET28-a and pET-28b). May I know what the difference is between these two?

09 September 2019 7,330 6 View

How does freezing antibiotics result in loss of activity?

I remember my mentor saying before that she decided to refrigerate her gentamycin stock solution instead of freezing it since that was the recommended storage condition. Now, I'm dealing with...

04 August 2019 5,991 4 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Do interactions between biosphere, carbon cycle, & water cycle impact global warming & interaction between atmosphere & hydrosphere?

How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?

09 August 2024 3,291 2 View

Is it true that $\det(V(A))$ may be only $\pm 1$, depending on $n$, for the last symmetric tridiagonal matrix $A$?

One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...

08 August 2024 6,690 1 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

How to prepare the nanoparticle treated fungal sample for Environmental SEM analysis?

A fungal strain was treated with nanoparticles. We want to do an environmental SEM analysis. So could anyone share your views on preparing the sample? Thank you.

07 August 2024 5,307 1 View

How to Add Missing Water Molecules in Protein-Membrane Simulations?

I have protein-membrane simulations (PDB, PSF, DCD) and have noticed that water molecules near the protein are not visible in the simulations. How can I fix this issue? Is there a way to place the...

04 August 2024 1,200 2 View

How can I find access to heavy metal reference doses from the EPA and WHO websites?

Reference dose and Maximum acceptable concentrations HMs

03 August 2024 8,230 4 View

Why is nonpoint source pollution potentially more harmful and difference between point and nonpoint sources of water pollution?

01 August 2024 1,180 2 View

How do living organisms play a role in the water cycle and why is nonpoint source pollution potentially more harmful than point source pollution?

01 August 2024 7,061 2 View