Enigmatic tooth from the Badenian - any idea?

Hello Everyone! Does anyone have any idea on the ID of this tooth? It is from Badenian marine sediment, dominated by fish teeth. This one looks more like a reptile tooth for me, however, I have...

10 November 2017 6,706 0 View

Does anyone have good papers on the fish genera Aetheolepis and Heterostrophus?

I am looking for figured and/or drawn specimens of Aetheolepis and Heterostrophus (both are dapediids). Any recommendations are welcome!Additional: if anyone has this paper (version with plates),...

11 December 2016 5,998 3 View

Does anyone know about a pictured paper about the vertebrae of Percopsis omiscomaycus?

04 May 2016 3,863 3 View

Can someone ID this fish vertebra?

03 April 2016 1,072 5 View

Vidalamiinae vertebrae and/ or teeth?

Could somebody recommend me papers on Vidalamiinae teeth and/ or vertebrae? Isolated material is preferred. I already have the great work of Grande and Bemis, but similarly detailful papers are...

03 April 2016 1,132 2 View

Could anyone recommend literature to me on the palaeobiogeography and/or the origin of Salmoniform, Ellimichthyform and Elopiform fishes?

The main thing I need to know, that is any of them a Gondwanan-derived taxon? Any paper could be important! Thank You!

03 April 2016 1,573 5 View

Strange surface of a bone-fragment?

I had some problem in ID this bone-element. It has a pattern of tubercle-like dots on the outer surface. Does anyone have any idea on what it could be?Have a nice day!

03 April 2016 5,545 17 View

Could this be an amiiform basioccipital?

03 April 2016 7,989 5 View

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

03 March 2021 8,272 1 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

I want to performe MALDI-TOF MS for bacterial identification, I would appreciate it if anyone can tell me the matrix solution preparation protocol ?

based on what I've studied on multiple papers, for peptide and protein identification Alpha-cyano-4-hydroxycinnamic acid (CHCA) is an appropriate matrix to use, I also know that the CHCA powder...

26 February 2021 6,799 3 View