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More Sergey Berdnikov's questions See All

How do we pick data for determination of Validation Acceptance Criteria?

Hello, colleagues! There is commenting open for new upcoming edition of USP 1033. Validation target acceptance criteria is now different from what it used to be and it doesn't include Cpm....

23 July 2024 7,292 3 View

Hydride zirconium properties?

Could you present the review or nowadays status state investigation of thermophysical and physico-mechanical properties of hydride zirconium (ZrH2)? Where can I find out properties data tables?

02 April 2024 2,025 0 View

Ansys APDL_Receiving resulting heat flow in finite element?

Could anyone explain *how to* or give an example of receiving heat flow (watt) for the FE element? I understand that *GET command is useful like *GET, PAR, ELEM,NO_ELEM,...,SMICS but can't get...

01 April 2024 6,562 2 View

Is it possible an unspecific binding of streptavidine or peroxidase?

I have a question for the professionals. The essence of the problem: I fix the oligos on a plastic substrate, they play role of primers in solid-phase PCR. I carry out a one-step PCR with...

28 March 2024 9,110 2 View

Simulation of temperature field in a brick, taking into account thermal expansion with ANSYS Mechanical APDL? (Thermomechanics in details)?

Problem to model a simple (at first glance) stationary problem of thermomechanics in an elastic formulation in ANSYS Mechanical APDL. There is a simple block (brick), with spatial non-uniform...

28 March 2024 7,709 2 View

Ansys Mechanical APDL__4D table input (axes and indices)?

Hello colleagues! Several days ago I used to struggle with tech problem of 4d table input QV = QV(X,Y,Z,TIME) using Mechanical APDL commands script. I haven't solved it yet. 1) Standard technique...

22 March 2024 3,515 0 View

I am looking for B-H curves of GO steel M080-23DR (Domain Refined)?

I am looking for B-H curves of GO steel M080-23DR (Domain Refined). It is customary to think that the "technical saturation" of GO steels is near 2.0 – 2.04 T. However, there are some indications...

04 March 2024 7,393 0 View

How to get solution for house-selling task (or task of selling an asset) with conditions “finite horizon, recall is allowed” ?

House-selling is one of the typical tasks of the Optimal Stopping problems. Offers come in daily for an asset, such as a house, that you wish to sell. Let Xi denote the amount of the offer...

03 February 2024 4,482 4 View

What dye do you use for RNA electrophoresis?

Colleagues, tell me which dye is optimal for staining RNA during gel electrophoresis? Which one do you use in your laboratory?

21 January 2024 6,373 4 View

Are you in Public Health and interested the project: "Central Asia Alliance for Climate-Health Research"?

I seek coauthors and colleagues from Uzbekistan, Kazakstan, or other CA countries in "climate-air-pollutant-health" research. It would be great to collaborate with individuals who share similar...

28 November 2023 8,493 0 View

How to correctly use the UTE and ZTE pulse sequences in Bruker's ParaVision software?

I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...

01 August 2024 9,227 1 View

IHC profiler in image j software. has anyone used it to quantify nuclear DAB positivity?

Dear researchers. I tried using the IHC PROFILER in image j to quantify nuclear DAB staining. I followed the instructions in the original article by "Varghese F, Bukhari AB, Malhotra R, De A...

29 July 2024 2,229 0 View

How many events should be counted for the analysis of apoptosis with nuclear staining with Hoechst 33342 whit microscopy ?

Greeting How many events should be counted for the analysis of apoptosis with nuclear staining with Hoechst 33342 whit microscopy ? Are 100 events count sufficient and three repetitions for...

25 July 2024 7,520 0 View

How Can I Resolve a Persistent Unwanted NMR Peak at 1.25 ppm?

Hello everyone, I am facing a consistent issue in my NMR spectra with an unwanted peak appearing at 1.25 ppm. This peak seems to vary with the amount of sample: it becomes more pronounced with...

15 July 2024 9,065 4 View

What are the criteria that must be retained for the development and validation of a qualitative NMR method ?

Dear Community, I would like to develop and validate a qualitative NMR method for the analysis of a specific category of chemicals, and my question is the following: What are the criteria that I...

08 July 2024 1,402 4 View

?como elimino articulos que no son propios?

eliminoar articulos que son de tu autoria

05 July 2024 2,107 1 View

How to conduct the NMR study of a nano-composite film?

Solid state NMR study

03 July 2024 422 1 View

In what ways do economic factors influence family dynamics and relationships?

Economic factors influence family dynamics.

02 July 2024 6,235 0 View

I have NMR,Mass spec,IR and uv of a mixture of three unknown compounds from natural products.I am attaching the data who can help me elucidate?

I isolated a mixture of three compounds from the stem bark of a plant . I have NMR, Mass spec, IR, and UV data. There are a lot of things I can't make meaning out of. Kindly help me with the...

02 July 2024 9,531 4 View

Journal of nuclear materials 595 July?

Contents of the issue

30 June 2024 4,088 1 View

Gerhard Martens

Dear Sergey Berdnikov ,

please have a look at the following help page of the RG support center:

https://help.researchgate.net/hc/en-us/articles/14292811772689-Logging-in

and follow the instructions to add (and activate) a second E-mail address.

Good luck and

best regards

G.M.

Sergey Berdnikov

Thank you very much. You helped me a lot.