What are the commercially available materials that has a high surface area or CEC (cation exchange capacity)?

The material (besides clay) needs to be non-reactive/stable, and preferably synthetic. Thank you very much in advance! Your suggestion is very much appreciated!

11 December 2018 359 7 View

Is there a good method to quantify exopolymeric substances (EPS)?

I am currently incubating liquid medium (seawater) with bacteria and some clay/calcite seeds. I am interested to quantify how much EPS produced by the bacteria. The problem is I included yeast...

01 February 2018 7,311 7 View

Does journal Impact Factor really matters?

I find many scientists obsess with JIF and number of publications as this may bring them promotions, jobs, and grants. But, JIF clearly isn't a great way to assess the quality of one's work. Why...

10 November 2017 3,367 7 View

Is the University Ranking system flawed?

Is it fair to rate a University base on the endowment and funding they got? Is the university ranking an accurate way to gauge academic excellency of a university? And how much do you buy this...

10 November 2017 9,575 3 View

Does bacterial produced exopolymeric substances (EPS) contribute acidity/alkalinity?

I wonder what is the solubility of any EPS? Does it contributes to alkalinity/acidity of a medium? What is the pKa/pKb? Does it really depends on the functional groups of the EPS?

10 November 2017 914 6 View

What is the hydration energy of anions such as phosphate and sulfate in seawater/high ionic strength medium compared to cations (Ca2+ Mg2+)?

I am looking on calcium carbonate precipitation in seawater and would like to know how (or to what extent) anions (PO43-, CO32-, SO42-) and cations (Ca2+, Mg2+) draw water molecules into the...

10 November 2017 2,159 3 View

How to re-grow Desulfovibrio alaskensis (G20) to an OD of 0.2 - 0.3?

I have a weak culture of this sulfate reducing bacteria grown on aqueous medium recommended in DSMZ medium (low ionic strength medium) (25 degrees C), at very low OD value. Now, I would like to...

06 July 2017 5,112 2 View

How to culture Desulfobacter latus?

I grow this D. latus in syringe bottle under temperature 30 degree celsius incubator. I followed the instruction given by the DSMZ but it doesn't seem to work. The bacteria doesn't grow into high...

08 September 2016 7,177 4 View

What would be the best portable device to look for concretions and rocks underneath a salt marsh?

08 September 2015 7,811 7 View

What could be the plausible sources of Al, Mn, K and Fe in rainwater?

The rainwater samples were collected in a suburb of Kuala Lumpur (Malaysia) after a prolonged drought and haze episode. These samples were filtered and acidified prior to analysis by ICP-MS.

31 December 2014 4,052 23 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

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

Guidelines for survey (question type) analysis?

Hi. Please tell me what guidelines should i need to follow for questionaries' type research work in India. It is not hospital based work, we are conduction basic institutional based qualitative...

03 March 2021 2,037 3 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