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

Will a weakened arctic polar vortex triggers more sea ice formation southward causing a negative feedback to global warming?

Happy New Year! The recent cold snap in Northern America has caused widespread snow and frozen sea/lake water. Since snow has a greater albedo and reflect sunlight, will this essentially help in...

31 December 2017 1,731 0 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

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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 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

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

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

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02 March 2021 3,060 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

How to write a scientific report?

We are analysing scientific reports at University in great detail, so I wanted to find a scientific report about how to write a scientific report. Including detail such as what information to put...

02 March 2021 7,602 4 View