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

Do anyone here can help us in the field of molecular docking?

We have synthesized various metal complexes with different environment around the metals. Now to see the application of synthesized complexes we need this study also. we are also interested in...

01 March 2021 1,899 2 View

Is there any one who can provide a donation of HPV detection and genotyping kits in exchange collaboration fors?

Warm greetings My name is Ayichew S. and I am doing my Ph.D. in Medical Microbiology (on Human papillomavirus). At this stage, I have almost completed a clinical sample Cervical swabs)...

25 February 2021 1,660 3 View

How can we assess applied digital skills and soft skills through online examinations during COVID-19 semester?

The final qualification assessment for major programs is a strict regimen that involves different stages - oral and written exams, final project viva, internal and external review. How are ICT...

16 February 2021 1,762 8 View

An article on the Iranian state's civil liability in the COVID-19 matter needs supervision; Is anyone interested in collaborating?

Hello. An article on the Iranian state's civil liability in the COVID-19 issue has been written in collaboration with a friend and a comparative look at law and biology. The article is ready to be...

15 February 2021 2,906 2 View

Possible problem for showing 0.2 sun intensity instead of 1 sun intensity in AAA class Newport solar simulator?

We have a AAA class Newport solar simulator. We changed the Xenon Arc Lamp recently (XBO450W, Make:OSRAM) as the lifetime got over. However, the intensity is coming to be only 0.2 sun instead of 1...

14 February 2021 9,998 3 View

Which tropical country is the most easy for obtaining research permit (for biological research)?

Dear all, High beurocracy hihly complicate field ecolocial and evolutionary research nowadays. Nearly all tropical countries (maybe all?) requires research permit for performitng research and in...

04 February 2021 3,672 6 View

Why marketers need a forensic understanding of consumers and a creative, agile mindset?

02 February 2021 6,579 10 View

How can an Undergraduate collaborate with Professors globally for research projects?

I am seeking to increase my experience by working on research projects and aiming to present them as papers

01 February 2021 3,800 4 View

Are there well-established collaborative sorting tasks/datasets?

Hi, I am currently working on research on communication behavior in Mixed Reality. I am planning a study, where dyads perform a task, in which they have to collaboratively cluster or sort cards...

31 January 2021 4,979 3 View

What causes defect peak broadening?

Say we observe yellow and blue luminescence in GaN, and these defect peaks are always broader than the BE peak. What factors contribute to defect peak broadening? Please help me list out such...

25 January 2021 1,733 3 View