What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View

What is the minimum number of studies in each category required for a multiple subgroup analysis to be viable in a meta-analysis?

Cochrane Handbook mentions subgroup analyses are only warranted if there are more than 10 studies (I have 28), and if they are distributed evenly among categories of subgroup. I am wondering if...

17 February 2021 3,467 4 View

How do you interpret multiple meta-regression in STATA?

Please could someone recommend a resource that explains performing meta-regression with multiple moderators. I have read the STATA META ANALYSIS REFERENCE MANUAL, but this only gives examples of...

17 February 2021 7,376 1 View

How many indicators do I need to represent a latent construct?

Hi folks! We did a large survey and planned to use 3 indicators to represent a latent construct (Sense of Place/SoP) in a latent regression model (structural equation modeling). However, one of...

15 February 2021 7,705 3 View

What is the structure of a photon that can describe the interference experiments that reject the wave nature of light?

De Broglie's double-solution postulated a causal model of Quantum Mechanics. Knowledge of the photon structure was needed to model the particle part of the cause of the Double Slit interference...

11 February 2021 6,869 5 View

How do you incorporate a study that used non-parametric analysis into a meta-analysis where majority of studies used parametric?

I am calculating Hedge's g for effect sizes, so I am pulling means, SDs, and Ns, from each study. However, one study did a Mann-Whitney U test, and so reports Mean Rank, Sum of Ranks, U, Z, and r...

31 January 2021 1,182 5 View

How to share a struct between client.c and server.c in Contiki RPL UDP ?

I'm trying to include udp-client.c in udp-server.c to share a struct between them But I keep getting this error udp-server.c:67:1: error: redefinition of autostart_processes In file included...

16 January 2021 5,013 4 View

Do you know any CEFR-annotated learner corpora for writing tasks?

Dear researchers, I have been working on a machine learning algorithm to classify language learners' writing tasks automatically according to the CEFR levels. The aim is to use...

03 January 2021 7,041 2 View

Who are the leading Indigenous academics who have researched and published on STEM teaching and learning?

I'm interested to read what leading Indigenous academics have to say about the intersection between traditional or Indigenous knowledges/epistemologies, values/axiologies and ways of...

14 December 2020 10,026 10 View

How to performe a non-inferiority test in an adjusted linear regression?

I am looking for the relation between weight evolution (continuous) and a binary factor adjusted for confounders. The regression gives an (adjusted) difference and its CI less than the planned a...

13 December 2020 8,061 3 View

What type of pressure sensor are usually used in microfluidics?

My team is designing a dual channel microfluidic chip that runs air and water. I think we've decided on the NE1000 syringe pump for it's versatility and feedback control. We will be ordering the...

18 February 2021 9,928 2 View

Is it possible to perform cardiac puncture followed by PBS perfusion with a pump?

Hello all, I will be perfusing mice with PBS for brain harvest and a colleague would like to collect the blood via cardiac puncture (these are 18m old mice so would be nice to maximize use). Has...

15 February 2021 5,312 2 View

Is it better to push or pull liquid through microfluidics with a syringe pump?

I have a PDMS microfluidic device that I want to perfuse cells through (there are also adherent cells in the channels). Is there any difference if I use a syringe pump to push the cells through...

30 January 2021 4,092 3 View

Silane solution and application to Glass ?

30 January 2021 7,924 3 View

how to add blood and plasma in comsol?

I am trying to model separation of the plasma from the blood on a rotating microfluidic platform. I am not able to add blood and plasma in Comsol. someone please provide me your valuable...

27 January 2021 8,263 1 View

What is the best antibody to identify human cells in mouse brain?

Dear colleagues, We transplant human cells in the mouse brain. After perfusion with 4% PFA (+ 4-6 hours post-fix) we want to identify histologically the human cells in a brain section. We have...

19 January 2021 352 3 View

Any stable dye to color acrylamide hydrogel beads?

Hi! We are generating hydrogel beads(50-60um) using microfluidics as single-cell beads. To simply all the experiments (especially the centrifuge), I am looking for a dye. The dye should be stable...

14 January 2021 4,383 8 View

How to interface Semi conductor physics and Fluid flow physics in COMSOL?. What are the parameters to be considered while we interface them?

I am using a silicon nano wire in microfluidic channel to identify the some changes in parameters like voltage and current. but i am unable to interface them. the two physics run individually but...

10 January 2021 8,894 1 View

Which syringe filters (e.g., PTFE, MCE, PVDF, CA, PES, etc.) are the best to filter TBS/PBS buffer (pH 7.5-8.5) and glycine buffer (pH 2-3) solutions?

I intend to purify antibodies from serum using the affinity procedure, and I need to filter the binding (TBS/PBS) and elution (Glycine) buffers before applying them to my solution.

06 January 2021 5,769 3 View

How can I obtain velocity of pair drops in electrocoalescence phenomenon by phase field module in comsol?

Hello everybody. I am simulating electrocoalescence of a pair water drops in oil by phase field method in comsol multiphysics. My question is how I can calculate the velocity of drops during...

11 December 2020 1,947 1 View