Is it possible to do Reitveld Refinement on single crystal XRD data?

I tried to do single-crystal Rietveld Refinement on my single-crystal XRD data using the option "refinement on single-crystal data/ integrated intensity data" in Fullprof but it is giving error...

30 January 2021 7,813 3 View

Real Time PCR: What is the justification for acceptable variance within 3 Ct? Is there any publication on this variance?

Hi all, I was not able to find any source with evidential justification for why the acceptable variance for internal control should be within 3 Ct and not other numbers of cycle of amplification....

17 December 2020 9,481 1 View

What will be the impact on Antenna performance to shift the resonant frequency by RLC Matching network?

There is always a possibility to shift the resonance frequency by adding a RLC matching network. I wonder what will be the consequence on antenna performance (axial ratio, gain)? If there is no...

13 September 2020 5,187 3 View

Axial ratio shows different result at different ortogonal setup. What could be the reason ?

17 June 2020 5,332 3 View

Firm survival and mortality: How to relate both?

I have two data sets 1. Age of all the surviving firms at any given point of time. The age distribution is an exponential function 2. The age of all the firms which died at a given point of time (...

01 February 2020 3,542 1 View

Why Antenna shows negative gain even though it has very good matching?

I am aware of the fact that electrically small antennas are poor radiators with very small gain and low efficiency. One main cause of this is poor matching. An extremly electrically small antenna...

19 January 2020 5,285 9 View

What is the impact of image current from ground plane on patch antenna? I wonder how it radiates if ground plane is very near to radiator?

As we know, patch antenna is combination of two magnetic dipole. If we place a perfect electrical conductor near a dipole, antenna performance will suffer significantly. Then how a patch antenna...

27 November 2019 7,597 5 View

I am getting two peaks at 702 and 705 eV for Fe 2p scan of a composite made from Fe-salen.how it can be explained?

the pure Fe-salen spectra is in conformity with literature,but the composite is showing two extra peaks at 702 and 705 eV. Can anybody explain about why the peaks are coming.

23 July 2019 5,710 3 View

What will be the cororidinate(theta and phi) to evaluate the axial ratio?

I have designed a circular polarized antenna. But , I am confused with cor-ordinate system. In some angel it shows less than 2 dB axial ratio and some other point it shows more than 10 dB like a...

23 May 2019 2,175 7 View

Is it necessary to desalt peptide prior to SCX fractionation?

Hi everyone, I come across some information and publications online that recommend sample desalting after sample preparation (denaturation, reduction, cysteine blocking, digestion) prior to...

02 December 2018 5,353 7 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

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02 March 2021 3,060 3 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How does one access the Cranet survey data on HRM practices?

Hello, The Cranet website does not provide any lead to the data obtained from their multinational survey on HRM practices. Any help on accessing the data would be most appreciated. Thank...

01 March 2021 9,536 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Can thermal cycler machines be problematic during PCR?

Hi, my question is about the heating of thermal cycler machines and I hope some of you had experienced a similar thing previously. There are two thermal cycler machines in the lab(BioRad) and for...

26 February 2021 4,777 4 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View