How does one directly measure the oxidation state of metals in particulate matter in aerosols collected from urban environments?

More Brian Reed's questions See All

How to Balance Bench work with Reading and Writing?

I am a second-year grad student. I am finding it difficult finding time to read literature and write (things like qualifying exam, thesis, grants). I find myself so busy with bench work that I...

01 March 2021 3,325 4 View

Is BRSV ("bovine respiratory syncytial virus") less susceptible to RNA degradation than SARS-CoV-2 when thawing a sample?

I've noticed that when thawing long-frozen samples (3-4 months at -20 C), most of the SARS-CoV-2 virus does not remain intact, but that the surrogate appears to. Has anyone else noticed this?

09 January 2021 4,168 7 View

Can you centrifuge and re-suspend a cDNA sample?

I am woking with very low concentrations of RNA in an attempt to run a qPCR analysis. Given this, I am going to attempt to synthesize cDNA without diluting my sample, and in two different,...

12 December 2020 3,247 3 View

Is the "Releve" method still standard protocol for plant community sampling and percent cover estimation?

I am not a botanist but need to estimate the average percent vegetation cover of my study area. I have researched this and found articles that use the "releve" method for determining plot size...

22 September 2020 5,676 6 View

How to accelerate Langevin dynamics simulations for bead-spring polymer chain models?

I'm running simulations for a bead-spring polymer networks using LAMMPS. I need my simulations to reach biologically relevant timescales of at least a few milliseconds. However each simulation...

14 September 2020 2,954 1 View

Convex Optimization for Deep Learning?

Is there such a thing as convex optimization for large deep learning networks? Is there a way to guarantee convergence? Has anyone looked into this?

06 August 2020 5,384 4 View

What happens in post-secondary education when instructors don't use traditional grades?

I am looking for empirical studies that examine the use of non-traditional grading in higher education. This means NOT using A-F grades during a course (even if, at the conclusion of the course,...

09 June 2020 1,519 6 View

What is the role of journals' reviewers? Should they be absolute judges?

- Ask questions where they are not sure/convinced about a statement/conclusion VS reject a statement/conclusion where they 'think' it is not correct? - Provide suggestions to improve a...

21 May 2020 2,624 7 View

Looking for immunologist or virologist to help with literature-based study for COVID treatment. Can you help?

On the side, I doing some research (literature-based) on a particular treatment that may help for COVID-19 symptoms but I need someone with a stronger medical knowledge base with expertise in...

29 April 2020 8,098 11 View

Female Soccer - Small sided games - Does training intensity reduce when elite players train with non elite ? or senior players with lower ages groups?

Hi , Im wondering does anyone know of any papers detailing the effects to training intensity of small sided games when the group is of mixed performance levels i.e( professional& semi...

18 December 2019 6,495 1 View

How to simultaneously perform multiple biochemical assays?

I am a research scholar working on heavy metal stress on plants. I will be doing biochemical characterisation( protein, carbohydrate, proline, antioxidant enzymes and many more assays) at interval...

01 March 2021 6,999 3 View

What are the pros and cons for mice versus rats?

Hi Everyone, I am designing a pilot study using rodents to assess the effects of simulated space environments (radiation + altered gravity) on microbiome and immune system. I have limited...

24 February 2021 1,825 3 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

What is recommended and opened real-time or nearly real time geospatial data used in flood risk assessment and regional planning on a detailed scale?

I asked recommended real-time or nearly real-time data source for any parameters for flood risk on a microscale analysis for urban area cases in developing countries that had agglomeration urban...

18 February 2021 2,617 2 View

I want to simulate a system containing protein and heavy metals; which force field is most reliable for this purpose?

The protein I want to simulate has multiple heavy metals. I wanted to know which force-field I should use with GROMACS to achieve this. Most importantly, do the latest updates in the force-field...

16 February 2021 2,420 1 View

Can bio-decomposer be a successful alternative to reduce residue burning?

To maintain the proper crop plan most of the times there is not enough time to make the field ready for the next crop. In this particular context , can bio-decompser be a solution? What about...

16 February 2021 7,068 24 View

What can be use to mop up heavy metals from vegetables or soils in quarry mining site?

It has been established that quarry mining site polluted and contaminated it's environment with heavy metals, these affects the crops and vegetables planted in the area. The possible solutions to...

12 February 2021 1,155 5 View

Which is the best wavelength to study aerosol optical depth(AOD) related to climate reseach,which criteria must be adopted in choosing the wavelengh?

We are doing a study on impact of aerosol on precipitation. Which satellite data and which wavelength will be the best. or can some one suggest a criteria to be adopted to choose an instrument...

12 February 2021 6,324 3 View

Can explain this diagram to me, is this the average consumption curve for one day or the total consumption of days in a month summed up in specific?

The hourly load curves of the selected household in each season are shown in Fig. 28. Figure 28 shows the demand for electricity in four months on an hourly basis. Can you explain this diagram to...

08 February 2021 657 16 View