About transparent ceramics?

thank you 1. Why uniformity of grains is important to have transparent ceramics?and How is effect uniformity of grains on increasing transparency of ceramics?then What can we do for have final...

01 February 2017 7,199 0 View

Why we need to cubic structure to produce transparent ceramic? and Is cubic structure concern to grain shape or unit cell?

if that is related to grain shape Why in some source implied "a lot of transparent have cubic structure but in some articles produce transparent ceramic with monoclinic or hexagonal structure is...

31 December 2016 9,062 3 View

Hi, How can we compeletely define synthesis ?

tnx

10 November 2016 6,791 0 View

Hello , How many roues are there for chemical synthesis ?

thank u

10 November 2016 5,403 0 View

I will used solid state reaction (SSR) for synthesis ZnWO4 , is it important the particles starting soluble in solvant?

09 October 2016 603 3 View

Is it any different between ceramic and polycrystal ?

tnx

09 October 2016 241 0 View

Is there valid sources for solubility material in solvants (especially water and ethanol) ?

09 October 2016 3,256 2 View

Who can introduce to me a software for calculate melting point a composition with some impurities ?

tank you

07 August 2016 9,495 1 View

Do we have any metallic scintillator ?

tnx

04 May 2016 5,252 0 View

Packing factor for Bcc structure can calculated and its value is 0.68 , Is it for what ?

04 May 2016 5,368 0 View

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

How to make a time series imputation benchmark ?

Hello ! In a work, I have to benchmark different algorithms to fill in missing values in time series. I insist on the fact that this is imputation and not forecasting. In my case, I have access...

24 February 2021 7,470 7 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View

How can I obtain time series data by country on night-time light (brightness) ?

Hi everyone, Please, how can I obtain time series data by country on night-time light (brightness) ? I've tried, but so far all I can find are maps. I am looking for numerical data, especially in...

24 February 2021 8,625 4 View

I have a time series data of some biochemical studies ( DNA and Chromosomal damage) which I intend to use to further predict into future ?

I have a time series data of some biochemical studies ( DNA and Chromosomal damage) which I intend to use to further predict into future without necessarily conducting the assay for an extended...

23 February 2021 7,842 1 View

How to run repeated measures in mvabund?

I have a dataset of fish species abundances collected from 6 different habitats over the course of 30 years. Fish were collected multiple times per year and environmental variables were recorded...

21 February 2021 3,838 1 View

What cause the beating of this signal?

I am trying to simulate the impact of a sinusoidal force on a Beam, yet I registred this beating signal (Displacement by time). The freaquency of excitation was the same as the first natural...

19 February 2021 5,872 3 View

Can someone help me with this error that I am getting while estimating a VAR model in R?

I am using annual time series data to estimate a VAR model in R. However, when I run the command to find the optimal lag length, I get the following error: Fehler in VARselect(data, lag.max = 10,...

18 February 2021 9,647 3 View