Why are my barium titanate sputtered thin films rapidly changing color when I take them out of the chamber?

Hello, I have been attempting to grow barium titanate thin films with sputtering by using 99.95% pure separate Barium and Titanium targets and varying oxygen flow rates to my sputtering chamber....

16 July 2020 9,297 4 View

How does sublimation temperature change in Ultra-High Vacuum?

We have a molecule that we are thinking of annealing/depositing onto a substrate in ultra-high vacuum (UHV). From our past experience, we know that the molecule sublimates around 90C at 10mtorr....

16 July 2019 1,784 4 View

What is the role of IL-4 in generation of BM-DCs?

I see protocols for generation of mouse bone marrow derived macrophages generated with just GM-CSF or GM-CSF plus IL-4. Can someone tell me what role the added IL-4 plays in generation of these cells?

13 April 2019 3,255 2 View

Why is value of my blank higher than value of my samples in UV vis spectroscopy?

I am trying to plot a graph with R^2 > 0.8 with increasing values of Cadmium chelate from 0,2,4,6,8,10 mg/l . According to a paper I have read Cadmium-Alizarin Chelate is used in this method so...

16 February 2019 2,410 3 View

I have Cadmium +2 ions in a solution, What possible compounds can I add to this solution to make UV spectroscopy so as to find how much Cd +2 absorbs?

According to my teacher and research papers I have come to understand that UV spectroscopy requires Cadmium to be in a Chelating compound or a larger compound . What possible compounds can I add...

24 January 2019 4,711 2 View

Help Calculating Sample Size for Sickle Cell Disease Screening?

The current reported disease prevalence is .6% of the population. I've tried using the formula n=Z^2(p(1-p))/M^2 with a confidence level of 95% and M=0.05 but my n value is obviously too small if...

15 May 2018 5,253 3 View

Should I look at BCL-2 in whole cell or subcellular fraction?

I'm looking at BCL-2 in cultured cells. I'm comparing treatments that appear to inhibit apoptosis. I'd like to look at BCL-2 levels in whole cell lysates, but I'm wondering if I should be looking...

06 November 2017 5,424 3 View

Is there a specific statistical package(s) that would be best to run a longitudinal linear regression?

I am interesting in running a longitudinal linear regression and am wondering if there is anyone that has experience in this technique, and namely, if anyone can direct me to statistical packages...

06 August 2017 1,088 6 View

Does anyone have difficulty distinguishing BK viral cytopathic changes versus atypical urothelial cells in degenerated specimens?

This question pertains to urinary cytology specimens when screening for high grade urothelial carcinoma.

28 July 2015 4,684 2 View

How can I establish good 4T1 tumors in-vivo?

I'm growing 4T1 cells in mice. I'm implanting two contralateral tumors per mouse. I'm having a hard time getting the tumors to grow symmetrically. I understand they won't all be perfect, but I'm...

04 June 2015 9,106 6 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

How can I publish a manuscript in free or low cost journal with good H-Index?

Dear all I am going to publish my manuscript which is from my thesis in a good H-Index journal but I found them very expensive(I don't have financial support) based on the exchange currency of my...

28 February 2021 7,800 6 View

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 View

Uncertianiny in using dry or wet basis in mixing a sediment with fuel oil?

Hello I'm currently working on a topic related to studying the anaerobic biodegradation of TPH in marine sediments. In this work, sediment should be mixed with fuel oil to a concentration of 20 g...

24 February 2021 9,839 3 View

Fractional impervious surface (FIS) map ?

Need Help Does anyone Know how to make a Fractional impervious surface (FIS) map from NDVI map, in ArcGIS environment? Thanks in advance

24 February 2021 8,455 2 View

What is the most important parameter of a research work, the impact factor or the h index?

The impact factor is a measure of the importance of a journal based on the number of citations received in a year. ... Articles published in a journal with a high impact factor do not all receive...

24 February 2021 7,481 2 View

Best plasmid could be used as a standard curve for AAV titration?

I have been trying to have a good AAV titration for my production and I have tried different plasmids to set up as a standard curve but each one behaves differently. i am trying to use ITR for...

23 February 2021 5,167 3 View

How to calculate refractive index (n and kvalue) against energy (in eV) data for alloyed nanomaterials through Independent Phase Approximation method?

Suggest me the method or some other software to calculate the above said data for nanoparticles.

21 February 2021 3,350 7 View

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View