Can anyone identify this fossil fish vertebral disc?

Shoreline discovery, lighthouse beach, Chatham, MA.

09 October 2018 1,260 0 View

Can anyone identify this Permian seed from Madagascar?

Probably from the Sakamena Formation; photos are opposite sides of the same seed; millimeter scale.

09 October 2017 4,094 3 View

What are the top three largest natural gas fields in the world?

Can you estimate the reserves of each?

08 September 2014 6,058 1 View

How might one recognize tornado occurrence in the rock record?

Would shredded plant material be an indication?

03 April 2014 490 18 View

Are any American scientists, a marine vertebrate paleontology and a marine sedimentologist, interested in co-supervising a Keck study?

Research venue: Triassic strata, Nevada. Date: Next summer.

06 July 2013 2,338 9 View

What is the oldest known fossil amphipod?

Why do amphipods in general have such a limited fossil record?

05 June 2013 9,883 7 View

Is the type and only specimen of Bostrichopus antiquus Goldfuss in fact lost?

Does anyone have recent interpretations or ideas about this curious taxon?

04 May 2013 7,942 1 View

Can Neo-Darwinism (ND) today be considered a valid scientific theory?

[Tip of the hat to Darryl Smith.]

04 May 2013 3,463 34 View

Do slime molds have a fossil record?

If so, can you provide the pertinent reference?

03 April 2013 1,714 2 View

What controls the placement of parr marks or lateral bars in Salmonidae juveniles (parrs)?

Is the retention of parr marks in adult Golden Trout (Salmo aguabonita) a case of neoteny?

01 January 1970 7,144 0 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View