Does anyone know an existing tool to make rock physics based curves of P-wave velocity versus gas hydrate saturation?

More Matteo Paganoni's questions See All

How to calculate stress at the cross section of spherical particles within a matrix?

Hi all, I am currently working on some background calculations before I start a new project related to metal matrix particulate composites. I am trying to find a way to calculate the stress at...

19 February 2021 8,503 3 View

Posthoc test after two-way ANOVA (two factors with two levels)?

Hi everyone, I was wondering if runnig a posthoc test regardeless of a significant interaction might make sense. I have prepared a dataset with obviously invented data but which can help to the...

02 February 2021 8,061 1 View

How can I use amylase enzyme to digest molluscan tissue before DNA extration?

Hi, I have a problem with a hight contet of mucopolysaccharides in some molluscan samples. I tried different DNA extration procolols but I can't already remove all the molecules that inhibit PCR...

01 January 2021 8,900 3 View

Will the spread of the new SARS-Cov-2 strain affect the efficacy of mRNA-based vaccines?

Recent studies have highlighted the isolation of a new strain of SARS-Cov-2. Could the new discovery compromise the effectiveness of the vaccination campaign ???

21 December 2020 7,516 4 View

Metasurface S parameter measure setup. How to do that?

Hi. I want to simulate the S mesurament setup of a metasurface. I took an horn antenna and simulated it's gain at my frequency. The I placed one on a side and the second on the opposite side....

16 October 2020 2,714 3 View

Is temperature measurement really useful as a screening measure for COVID-19?

The measurement of the temperature at the entrance to some structures or hospitals is a universally adopted measure in prevention strategies. There are two questions: considering the high number...

31 August 2020 5,843 12 View

Which could be a good DL technique for tracking an object and check for his integrity?

Hello everyone, I'm working on a computer vision project in which I need to detect in real time a moving object and check whether is still integer or not. Images will be supplied from a 4K...

05 August 2020 2,460 2 View

After the shocking case of George Floyd, should the physical restraint techniques used in the police and psychiatric settings be recoded?

George Floyd's case shocked the world. Physical restraint is a method used by the police but also in the management of psychiatric patients who pose a danger to themselves or others. In your...

10 June 2020 1,331 9 View

Can the political orientation of a medical / scientific journal editor influence scientific choices?If so, it'is morally and ethically acceptable?

Donald Trump's statements and the political opinion that publishers, especially American publishers, had of him profoundly indicated the editorial lines of the main scientific newspapers. Most...

10 June 2020 8,913 15 View

How to model in Arena Rockwell that all entities must clear their tails at the end of the simulation?

I am modeling the flow of visitors during a working day in a museum. The main problem is that I don't know how to model in Arena Rockwell the fact that all entities must clear the queue at the end...

20 February 2020 9,457 1 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 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

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Where can I find life cycle inventory or assessment of non woven materials?

Dear network, I am looking for the LCA or LCI or at least the energy balances of the non woven fabrics process for my master project, in specific for natural fibers, yet I have found...

02 March 2021 9,662 1 View

What are the most relevant MSc proposal topics for Petroleum Production Engineering at the moment?

I am a Petroleum Production Engg MSc student at Robert Gordon University in Aberdeen and I am in the process of selecting a topic for my MSc Engineering Investigation proposal. I would very much...

01 March 2021 7,396 4 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

How to remove fatty material from plant extract?

The resultant solid was partitioned three times with 250 ml of petroleum ether (40-60/c) to remove any fatty material and evaporated to dryness.

28 February 2021 9,464 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Jose Alfredo

RPH tools List of Matlab files The Rock Physics Handbook, 2nd Edition,Mavko,Mukerji, and Dvorkin, also QSItools another Matlab list with rock physics templates.

You can try using Pimpedance vs Vp/Vs and color code with Gas hydrate saturation I think these files can help you.

I hope that it will help you.

best regards

https://pangea.stanford.edu/research/srb/books/QSI/QSItools/

Matteo Paganoni

Thanks Alfredo :) Martino and me are actually trying to make some matlab codes for different hydrate morphologies with some in-siu data as input parameters. I hope we can make it right...

You are welcome :)

Haojie Pan

Recently，I have published two papers associated with rock physics modeling of gas hydrate-bearing sediments accounting for six common microscopic morphologies

Thanks Haojie, feel free to share here below the links to the papers!

The links to the papers are attached below.

Article Quantitative characterization of gas hydrate bearing sedimen...

Article Evaluation of gas hydrate resources using hydrate morphology...

Mario Emilio Sigismondi

Dear Matteo:

Another way if you want, is the Hampson & Russell´s Fluid Substitution Module.

The basic use of the Biot-Gassmann equations is to “substitute” or replace the fluids in a set of target layers with another set of fluids.

In this case, VP, VS, and ρ must all be known for the input logs, along with the fluid content (SW). Generally all three logs are changed within the target zone.

Let me know if you need the Manual.

Best wishes, Mario