To what extent the ecological change could generate a substantial adaptive evolution on a short time scales (20 to 30 years or within few decades)?

07 August 2016 3,291 16 View

How one can calculate these climate indices?

Recently, many climate indices are known. If one has climate data for a number of years and would like to calculate one of the climate indices, which climate index is achievable with the daily...

03 April 2015 2,652 2 View

What are the differences between variable and parameter?

Statistically, we use both terms. I would to like to ask on when we say that's a variable may change over time but this is a parameter which is a constant for a certain time or certain conditions,...

02 March 2015 7,236 4 View

What are the added roles of stem cell in curing diseases?

Although the role of stem cell is not new, but I would like to discuss what are the added benefits from 1998 till now after the capability of the scientists to remove stem cells from human...

01 February 2015 5,898 1 View

Why microorganisms consume first the preferred sugar then start in inducing genes to metabolize the less preferred sugar?

01 February 2015 2,306 0 View

How to write an application for a research project for DFG?

01 February 2015 6,659 1 View

What is the gene for Gerstmann-Straussler-Scheinker disease or GSS?

I would like to ask on this gene, what its role in causing death? and if anyone knows any way for treatment or prevention the disease induced by this gene?

01 February 2015 837 1 View

What are we doing to cope with the fast growing of the world's population? and What are its predictable impacts?

01 February 2015 4,188 2 View

Is it possible to transform the chlorophyll to hemoglobin outside our bodies?

I would like to ask on the possibility of transforming the unstable water soluble magnesium-compound (chlorophyll) to the iron-compound (hemoglobin) as the chlorophyll molecule closely resembles...

01 February 2015 1,664 4 View

What are the main properties used for determining index soil properties for an area? How can one calculates it?

01 February 2015 7,267 7 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

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

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

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Do you know good and user-friendly programs to measure plant quantitative traits?

For my research i will need to measure plant quantitative traits (especially leaves area and roots length, but would be nice to add some more information). I recently discovered...

01 March 2021 5,035 2 View

Any suggestions for a website that allows you to create questionnaires and gather unlimited data (Totally free)?

I have found only four of them; www.surveyplanet.com www.online-anket.gen.tr www.surveey.com and of course google forms. Expecting to see your suggestions if there is any. Thank you

28 February 2021 3,237 3 View