Why did mammoths become extinct?

The obvious explanation is that humans killed them off, just like very many species of large animal which became extinct when exposed to humans. However, elephants have survived, though maybe...

03 April 2019 4,616 4 View

Does a faulty MAPT gene always cause dementia?

09 October 2018 6,616 0 View

Is this statistical calculation correct?

"A tiger shark was most likely responsible for Dylan McWilliams' recent bite in Hawaii. But that's not all his bad luck. PHOTOGRAPH BY BRIAN J. SKERRY, NATIONAL GEOGRAPHIC ... Outdoor enthusiast...

08 September 2018 6,813 15 View

What is the evidence that human evolution depended on the occurrence and selection of new mutations?

It is often assumed (see first post below) that human evolution relied on new mutations. Whilst not doubting that this process can occur, why is it necessary to assign it any major significance?...

03 April 2018 6,195 4 View

Do domestic mice spread disease?

It is no secret (eg see first post) that mice carry harmful organisms. But where is the epidemiological evidence that house mice actually cause human disease? Bats, cats and rats infect humans,...

03 April 2018 5,237 35 View

Is there any basis for the common assumption there are no sex differences in mental abilities?

"It is widely accepted that there are no inherent gender differences in mathematical ability or intelligence" Sunday Times Jan 21 2018 p5. "Differences in intelligence have long been a topic...

31 December 2017 3,214 16 View

Do dead people have rights?

A few years ago it would have been ridiculous to pose this question, as the answer is obviously No. See this from The Economist Nov 23 2017: "Some people argue for a punitive inheritance tax....

10 November 2017 8,693 7 View

Are there human sex differences in ability, personality or interests?

07 August 2017 3,888 1 View

What is truth?

04 May 2017 4,114 3 View

Should ability be taxed?

04 May 2017 1,588 9 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