Polymers 's simulation?

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How to calculate age-standardized prevalence ratio with 95%CI?

I need to calculate the prevalence ratios to show the trend of prevalence of a drug group used by pregnant women over the years (2001-2018). I would like to use the year 2001 with age distribution...

05 January 2021 7,986 5 View

Does CD31 indicate cell viability?

Hi, I am wondering if the immunofluorescent staining of CD31 antibodies can both mark endothelial cells and indicating their viability. In other words, if I perform immunofluorescent staining for...

23 December 2020 5,815 4 View

How to increase titer of Herpesvirus, Adenovirus?

I'm working with Herpesvirus and Adenovirus. For Herpesvirus, I use Vero cell line to activate and check virus titer. For Adenovirus, I use Hela cell line. Recently, I could activate them, but...

16 December 2020 4,073 5 View

How big can a enhancer deletion be ? how can we obtain homologous deletion clone ?

Hi all, I have tried to use Crispr Cas9 ( plasmid px333_cas9_mCherry) to delete some enhancers. I designed sgRNA using Chopchop website to target both sides of an enhancer to induce homologous...

13 December 2020 942 3 View

How to calculate the fractional vegetation cover (FVC) from Landsat imagery?

Hi folks, I wonder if anyone know how to calculate the fractional vegetation cover (FVC) from Landsat imagery? As far as I have read about that NDVI, NDVIs, and NDVIv are three required input...

07 December 2020 4,054 2 View

How to determine the orders of High pass filter for ECG signal ( cutoff frequency = 0.033 Hz so near 0 Hz) ?

I'm trying to theoretically design a active High-Pass Filter for ECG signal with cutoff frequency Fc = 0.003 Hz...it's too close to 0 Hz and stop band frequency must be greater than 0 Hz . So...

18 November 2020 9,089 1 View

Is it possible to identify/classify rubber using satellite imagery with machine learning?

As of now, I am trying to explore the potential of using high/very high-resolution satellite imagery with machine learning (ML) to identify or map forest cover (e.g. rubber). As a newbie in this...

17 November 2020 7,187 3 View

Cloudy brain samples in sucrose solution?

I have some samples I left in sucrose for a couple of weeks after perfusion and was wondering if these samples are still salvageable? I perfused the brain, then they were fixed in 4% pfa for 24...

15 November 2020 1,728 2 View

Plaxis V20 water load apply error in analyses?

Recently I have been working in some embankment project and plaxis V20 is the FEM software I am using to calculate. But by the time I am working, I figured out the water load sometimes applied to...

27 October 2020 7,835 1 View

CDNA PCR problems: why did the sample without reverse transcriptase enzyme (band 5 in both two genes) have strong band with gen A?

Dear all, These are data from gel base of cDNA sample for PCR with protocol attached on the figure. Band 5 is no reverse transcriptase enzyme during doing cDNA library used random primer. With gen...

04 October 2020 8,774 4 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

What is the most suitable server for predicting protein structures in bacteria?

I have used the i-Tasser several times, however it has been unavailable for several days. I tried the swiss-model, but the output was not very pleasant due to the model used. Is there any other...

28 February 2021 4,521 3 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