What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Can Immunogenic BNT162b vaccines protect HUMANS from SARS-CoV-2?

"A safe and effective vaccine against COVID-19 is urgently needed in quantities sufficient to immunise large populations. We report the preclinical development of two BNT162b vaccine candidates,...

11 February 2021 6,628 9 View

Does Abaqus plugin AM-Modeler predict the same temperature/crystallinity history as UMATHT user-subroutine?

During AM process, progressively activation of elements can predict the temperature/crystallinity history, including surroundings heat losses and than this data could be used to determine the...

06 February 2021 4,686 1 View

Are the NTD ( N- Terminal Domain) targeted Antibodies Protected from SARS-CoV-II Infection?

20 January 2021 8,052 5 View

How is it that Ad26.COV2.S Covid-19 Vaccine is Bearing Better Results?

A candidate vaccine spurs both younger and older people to make antibodies against the coronavirus SARS-CoV-2, according to early trial results. The vaccine, which is under development by Johnson...

14 January 2021 8,184 6 View

How Does a Mutation Undercut The Human Immune System to the COVID-19 Virus?

A handful of mutations to SARS-CoV-2 can help it to escape the immune response mounted by a subset of infected people. https://www.nature.com/articles/d41586-020-00502-w Comprehensive mapping of...

13 January 2021 9,545 3 View

How do we calculate curvature value in ArcGIS?

Hello everyone, I am trying to prepare curvature map in ArcGIS 10.4, using spatial analyst tool. I am using 10 m CartoDem (projected in UTM 44N). I am getting very different value, curvature...

12 January 2021 504 4 View

For How Long do the Antibodies Protect from a Reinfection of Covid-19?

The presence of SARS-CoV-2 antibodies confers subsequent immunity in most people for at least six months, a study of healthcare workers in Oxford, UK, has...

31 December 2020 8,973 6 View

How do mRNA vaccines work and what differentiates the technology from the rest?

Most vaccines contain an infectious pathogen or a part of it, but mRNA vaccines deliver the genetic instructions for our cells to make viral or bacterial proteins themselves. Our immune system...

25 December 2020 3,982 4 View

How to rectify the miscomputation of Pressure and Continuity in HVAC CFD Simulation Using OpenFOAM?

I'm using OpenFOAM to run a CFD study of thermal comfort within a hall. I'm using OpenFOAM v1912 and BouyantBoussinesq(Simple&Pimple)Foam solver. eI have 6 inlets and outlets each with specific...

21 December 2020 1,303 3 View

Can you perform the Murexide test on samples fixed in Formalin?

I have a fixed sample and would like to use the murexide reaction to test for uric acid composition. I no longer have fresh samples

22 February 2021 1,328 1 View

The reason of PMMA channels cracking?

07 February 2021 3,663 2 View

Lift off problem with Indium/Gold deposition?

Hi, I'm doing 5/40nm In/Au e-beam evaporation at rates 0.2A/s(for In),1A/s(Au) on lithographically(doubly coated 495k,950k PMMA e-beam resist) done Si substrate at base pressure 2e-6torr. I'm...

18 January 2021 7,550 4 View

How to choose a PMMA with the correct thickness IN E BEAM LITHO?

I try to pattern the gold layer around 2 nm-20nm on silicon, I used around 2000nm thickness (PMMA 950K A13), I tried to pattern five samples in total, but only one showed the pattern I wanted. I...

13 January 2021 7,710 1 View

Can I measure lung weight after formalin fixation?

Hi, I have simple quick question. Can I make a measurement of mouse lung to evaluate lung metastasis after formalin fixation? Is it not reliable? Thanks.

11 January 2021 3,178 3 View

Why do my plaque assays look so weird?

I'm growing hCoV-OC43 in Vero E6 cells but whenever I do a plaque assay to assess viral titer the plaques appear as dark spots on a purple background rather than lighter spots. I attached some...

08 December 2020 6,517 2 View

Is surface embrittlement unavoidable after spray coating with brittle powder ?

I am not an expert at materials science. However, when I look at the literature, I read a process called cold spraying. This process is basically spraying a ductile powder (e.g. copper) onto a...

07 December 2020 5,378 2 View

Has anyone tried cross-linking cells with formaldehyde before co-immunoprecipitation?

Hi, I am currently trying to co-immunoprecipitate a protein but the interaction between that protein and its binding partner is not stable. Sometimes we able to detect its binding partner but...

29 November 2020 9,261 3 View

Is it possible to remove the mucus covering a fish's tongue once fixed in formalin 4%?

Hello everyone, Is it possible to remove the mucus covering a fish's tongue once fixed in formalin 4%?

29 November 2020 2,580 1 View

Why is my TiO2 sol milky?

@Krunal Dholiya has sent me this question which I post below so he can get the benefit of many experts. Dear, I am preparing a thin film using TiO2 sol but i m fasing problem, with time it is...

23 November 2020 1,188 2 View