What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Has anyone succeeded in capturing uranium atoms in a fullerene structure?

Additional questions are: What are the encapsulating atoms? How difficult was the process and what rates were achieved? What factors most seriously affect the economics?

20 February 2021 3,134 5 View

How to phrase semi-structured interview questions using IPA without biasing superordinate themes?

Hello, I am preparing a semi-structured interview schedule for an interpretative phenomenological analysis study on marginalized individuals' career experiences as impacted by COVID-19. The aim...

19 February 2021 9,099 2 View

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19 January 2021 6,848 4 View

Why do my fibroblasts under hypoxia conditions proliferate slower than the same fibroblasts under normoxic conditions?

I am using healthy control lung fibroblasts in a 96 hour experiment with two drugs (nintedanib and Pirfenidone) and vehicle controls for both. I have both hypoxia (approx 1% O2) and normoxia...

12 January 2021 6,260 1 View

Why is Statement of Problem one of the most challenging part of academic research? Why do supervisors pay more attention to it instead of methodology?

Some MSc and Ph.D. supervisors are having a lot of issues with understanding the Problem Statement of their students' research works. Sometimes, it leads to complete rejection of the whole...

04 January 2021 3,574 6 View

How much does radiative heat transfer effect thermal conductivity of materials and how to compare calculations to experirment?

I am calculating the phonon contribution to thermal conductivity for 4 perovskites (BaZrO3, BaSnO3, BaHfO3, and KTaO3) with relatively wide bandgap. When I compare my results for BaZrO3 to the...

27 December 2020 3,232 3 View

Proper method for assessing model invariance following Confirmatory Factor Analysis (CFA) and preceding 2x2 between-subject analysis?

I have produced a good-fitting, reliable baseline model according to CFA. The model contains several factors each loaded by several categorical (ordinal) items. I ultimately intend to analyze the...

15 December 2020 1,668 4 View

How to Reinstall Operating System for a TA Instruments 2910 DSC?

Hard drive crashed on an old windows 2000 that was used to control a TA Instruments 2910 DSC. Installed new hard drive and I am trying to figure out where I can find the software/operating system...

17 November 2020 2,467 3 View

Communities based websites do they serve a purpose?

I'm asking and posing this question as it forms a part of my final project year. I building an ASP.net community-based website coupled with an Oracle database and I'm looking for feedback,...

17 November 2020 7,852 1 View

Can somebody recommend me a decent textbook to learn more about signaling pathways and their mechanistic principles in general?

I studied biochemistry and molecular biology in my bachelors and Immunology in my masters. I never came across a suitable course for general signaling pathways and principles. My interest is...

13 December 2020 5,690 5 View

Band size NFkB of app. 150kDa??

I made a western blot with the p65 NFkB antibody and the phospho p65 NFkB antibody from cell signalling. I get a band for both the phospho and non-phospho antibody at around 150kDa, how can this...

16 November 2020 1,948 3 View

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30 October 2020 961 3 View

What is the difference between endometriosis and ovarian cancer in terms of signaling pathway?

Hello Recently, I am curious to know about mechanisms of endometriosis and signaling pathways. I have a question about the difference between signaling pathways in benign tumors and malignant...

26 October 2020 3,891 6 View

Where can I get LN-308 cell line?

Hi! I am looking for a cancer cell line with endogenously high expression of GPR55. LN-308 seems to have the highest level of GPR55 among multiple cancer cell lines (according to Genevestigator;...

20 October 2020 3,004 3 View

How can we explain the decrease in taste in a patient with desminopathy (myofibrillar myopathy)?

A patient with hereditary desminopathy (mutation Thr341Pro DES in a heterozygous state) with disease progression has a significant decrease in taste. How can this fact be explained?

15 September 2020 3,742 4 View

What do you suggest to investigate cell signaling with the small number of cells?

I have a plan to investigate cell signaling on NKG2D-expressing CD4. For this matter, I plan to isolate primary cells from patients and use western blot technique to measure the expression level...

08 August 2020 911 5 View

How does the awareness that plants are intelligent can help plant scientists?

How does the awareness that plants are intelligent can help plant scientists? May it be a new school of thought in realm of plant studies?

29 May 2020 2,586 3 View

How to increase binding for a very weak antibody?

26 May 2020 9,445 12 View

I wonder what techniques can detect indirect protein interaction?

I have a co-stimulator A on CD4 T cell membrane. D is a transcription factor, responsible for CD4 differentiation. According to the known signalling pathway graph, perhaps there are two protein B...

03 April 2020 9,189 3 View