What make sulfur play a critical role to form most of significant ore deposits?

i read most of ore deposits related to magma origin the sulfur play a critical role to form these ore, first of all chemically what make S behave as former inside magma , as magma has a lot of...

06 July 2018 3,561 2 View

What is the source of carbon in magma to form diamond?

i am trying to figure out the source of carbon it is from magma or recycled from surface

03 April 2018 1,076 1 View

What means when USA withdrawal from paris agreement ?

i hear in news and some magazine that if america not deal any more with paris agreement will affect and increase global worming. could you please explain how , what that mean if they are not...

01 February 2018 5,116 0 View

Why some element has isotopes, others no?

i always read about isotopes and i want to know why some elements has 3 isotopes, others 2, 1, some no isotopes. which chemical action can perform that.

01 February 2018 854 2 View

How to differentiate between anhydrite and kaolin physically properties?

while drilling some wells always get confusion between kaolin an anhydrite as it came in same color. i consider as kaolin due to environment comes sometime with clastic rocks, which not agree by...

31 December 2017 839 1 View

Why there is no add references in research paper as project?

09 October 2017 4,678 1 View

Could i consider manganese(MN) content in travertine deposits as indication of alga existed?

if i check samples and it is hard to find out bacteria through microscope, could we use manganese content as geochemical evidence for bacteria in amount relatively

09 October 2017 1,553 5 View

What is the depositional environment of micaceous sandstone?

while we drill we face hard formation sandstone plenty of mica.

09 October 2017 4,922 10 View

IS there any software for sedimentary rocks modeling?

08 September 2017 7,072 4 View

How i can make an old paper for me as references of new paper which related to? i really can not add or cite mine..... any idea?

cite publication, references

08 September 2017 9,509 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

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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 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

Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 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

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View