Unusually Busy Raman Background?

Hello, I am observing a nearly periodic background spectrum for a wide variety of SERS substrates. I see this response (attached below) for bare Au films, Cu films, and Au nanoparticles on...

15 February 2021 9,922 5 View

What crossover operators can be used for a GA that finds suboptimal positions for a set of buildings?

I'm currently working on my undergraduate thesis where I develop a genetic algorithm that finds suboptimal 2D positions for a set of buildings. The solution representation is a vector of real...

11 January 2021 9,835 4 View

How did Rutherford and Thomson derive the equation for average deflection of a particle hitting an atom?

08 November 2020 9,046 2 View

Converting csv files with data for mapping rainfall on QGIS?

Hi, I am hoping to produce rainfall and temperature maps for a current project in QGIS. I have csv data downloaded which have been imported into QGIS. My aim is to be able to produce rainfall...

10 October 2020 4,930 5 View

How to control variables in a water hammer experiment?

I'm doing a high school experiment on how the impulse of water hammer is affected by pipe diameter, and I'm unsure of how to set up my experiment. My primary concern is safety and validity: - Is...

06 September 2020 1,252 3 View

Incorrect simulated conductance value compared to analytical solution using ANSYS Maxwell 2D?

31 May 2020 7,991 3 View

Reaction of hexamethyldisiloxane (HDMSO)+O2=SiO2+?

I'm giving a presentation on semiconductors and specifically the SiO2 insulating layer. The presentation is on kinetics so I kind of need to know the reaction. Problem is the papers I'm reading...

30 March 2020 8,643 3 View

Efficient preps for chunky human adipose tissue?

Hi all, I aim to isolate SVF from the tissue. However, we sometimes receive big chunks of tissue that is not through liposuction. I've been wondering is there a ingenious way to efficiently prep...

24 February 2020 6,104 1 View

Predicting the Age of home buyers - model based method?

All, I have a data-set which contains information on both the type of property an individual(s) purchased, along with some information on the individuals themselves. However, I am missing age...

19 February 2020 5,728 3 View

Are full-scale performance-based drama projects for adult EFL learners worthwhile?

Hello, I wonder if anyone would be kind enough to help with research for my dissertation concerning attitudes and approaches to full-scale stage or screen performance-based drama projects for...

27 January 2020 3,167 2 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

Discrete Phase model (DPM) particle break-up has particle size limits during particle tracking?

Hello, I am currently working on simulating water droplet partciles in a closed room. When I use uniform particles, without "particle break-up", I can carry out the simulation without any problem....

02 March 2021 3,053 2 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

No title

01 March 2021 3,905 5 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

Is it necessary to report effect size (ES) in statistics of biomedical research given that we already report p values routinely?

Pls share your thoughts

01 March 2021 7,330 4 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

What pH condition required to coat APTES on silica coated Fe3O4?

It's a hydrolysis reaction, which may produce by either acid or base-catalyzed reaction. so can anybody help me with this, which condition is suitable for this reaction?

26 February 2021 1,760 8 View

Zno nano particles colour changed from white to grey in process of calcination any suggestions?

In the formation of Zno nano particles process, after drying at 120 degree C, my zno nano particles are completely white but when i calcine it for 450 degree C it converts into grey colour. i...

26 February 2021 2,435 4 View