Is there any specialist on taxonomy of Maechidius (Coleptera: Scarabaeidae)?

More Dmitry Telnov's questions See All

I need help with Identification (misidentification) of European Pisidiidae & Sphaeriidae?

Hi everyone! I published an article summarizing my first experience in determining cryptic species of small bivalves, of course with errors. I will be very grateful and will thank you in future...

02 August 2024 6,582 11 View

Why typical glow discharge of TEM grids bring negative charge to the surface?

Hello everyone! Glow discharge treatment of TEM carbon-coated grids is a commonly used routine. Usually the grids are placed onto the cathode, and they are separated from the cathode by a glass...

08 April 2024 5,164 3 View

Why do identical sequences form a "comb-like" structure with non-zero branch lengths on the resulting phylogram in Mr.Bayes?

Hello, can anyone explain me why MrBayes gives long terminal branches for different speciomens with the same sequences? I am studying multigene phylogeny and for some individual nuclear gene tress...

28 February 2024 2,709 0 View

Does somebody know an open-source software for the video analysis of behaviour including manual scoring?

Hi everyone! I have behavioural videos with corresponding timestamps of trials. I would like to be able to manually select trials based on animals' behaviour. I am looking for an open-source...

05 February 2024 1,661 3 View

How long transfected cells can be cultured without G418 before they loss a plasmid?

Hello! I have a question regarding transfection stability in MCF7 and IMR32. For my experiment I need to transfect them with a plasmid with my gene of interest and Kan/Neo-gene which confers...

02 December 2023 1,626 2 View

RE: Dynamic Hardness from indentation test?

When test force is F (mN) and an indentation depth in a sample is h (µm), dynamic hardness (DH) is defined by the following formula: DH =a*F/h^2 [kgf/mm^2] For the triangular 115 indenter...

27 November 2023 5,170 1 View

Nucleus staining dissapear at the immunocytochemistry slides. Why it could be? and how to avoid it in future?

Good day. An immunocytochemical stain for CK20 of urothelium was perfored. Counterstain was Mayer`s hematoxylin (left figure). But after 1 day stain of the nucleouli dissapear (right figure). Why...

26 November 2023 1,241 2 View

How to quantify the free radicals?

Hello! I treat a polymer surface with plasma and I expect that some free radicals form on it, because it demonstrates high adsorption. How could I quantify the presence of free radicals on a...

01 November 2023 738 2 View

What's causing the smears on my second PCR product?

Hello, I have a trouble with a PCR reaction. The thing is, a PCR reaction from cDNA goes well, the first picture. But after purifying and using this DNA for the same PCR to multiple it I get the...

07 October 2023 2,398 6 View

Why is the decision time for Wiley journals so long?

The first time I submitted an article to the journal "Software: Practice and Experience". It took a month and a half to make a decision. It didn't get to peer review. The second submission took...

26 September 2023 2,420 1 View

Need help for this fern?

I need some assistance to ID this Fern I collected in remote Papua New Guinea tropical lowland hill forest at 50-100 m asl. I think it is one of the Dryopteridaceae but I can not put a genus and...

27 June 2024 5,076 2 View

What are the engineering applications of polyethylene with waste tire rubber?

When polyethylene, whether high-density or low-density, is mixed with percentages of waste tire rubber, it becomes a new material. Where can it be used?

26 June 2024 3,349 2 View

Please tell me the scientific guidelines (books) on Trombidiformes ticks?

books and scientific papers on the morphology, taxonomy and so on of ticks of the suborder Trombidiformes

17 June 2024 948 2 View

How long time does it take for a fruit species to become naturalized and considered locall species?

Plant Taxonomy

09 June 2024 6,845 1 View

How to perform the anaysis of taxonomic on raw reads from the mixed sample?

Hi, I am very new to Bioinformatics. Recently, I have the project that aims to perform taxonomic anlysis on raw reads from mixed samples taken from environment. For example, we perfromed NGS...

09 June 2024 6,537 3 View

Trouble growing THP-1 cells?

Hi, everyone. I have some issues with THP-1 cell culture. I have little experience in cell culture and I hope some of you could share some experiences in culturing this type of cell. I'm...

30 May 2024 7,764 1 View

How to read in multiple files in R and then make a phyloseq object ?

I want to do microbiome analysis using R, for which I have three folders that contain ASV data, metadata i.e. sample data, and taxonomy data for 56 sample studies. I want to read the data in those...

19 May 2024 5,077 2 View

What is the pharmacotherapeutic role of moderate-to-massive corticosteroid doses in managing or aborting acute migraine attacks? The principles?

For anything we do not understand in medicine and medical therapy, including acute migraine attacks, we therapists use corticosteroids in the garb of rescue therapy. Why? Only at ResearchGate is...

18 May 2024 9,132 8 View

What are the cause(s) of prolonged severe (+4) diffuse abdominal pain aggravated premenstrually, relieved to a very large extent post-menstruation?

Abdominal pain is or can anytime become a deep mystery that challenges the best minds. I have a case to share that will give immersive insight but was refused for Publication as a snippet by the...

17 May 2024 8,056 0 View

What is the Measurement scale for Project Innovation ?

I am working on testing a Theoretical framework for fostering innovation in new product development . Can any one share a measurement scale to measure project innovation as outcome .

10 May 2024 8,696 6 View

Cosmin Manci

Hi Dmitry, not a specialist of the genus (but with a keen interest in the family) but I can take a look on your specimens and photo them (see part of my scientific work at: http://insects.nature4stock.com/). Let me know if you are interested. All my best, Cosmin

Dmitry Telnov

I am strictly against any identifications based on the photographs. Yes, you can identify Coccinella septempunctata from N Europe on base of good photos, but not obscure Papuan taxa I am speaking about.