Chin Yik Lin

12 Questions 21 Answers 0 Followers

Questions related from Chin Yik Lin

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!

12 December 2018 449 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...

02 February 2018 7,412 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...

01 January 2018 1,796 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...

11 November 2017 3,436 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...

11 November 2017 9,633 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?

11 November 2017 976 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...

11 November 2017 2,257 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...

07 July 2017 5,185 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...

09 September 2016 7,241 4 View

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

The diameter of the concretions and rocks are ~ 10 to 20 cm at depth of 1 to 3 meter under a salt marsh environment. The salt marsh sediment generally has very high moisture content with 30% of...

09 September 2015 7,869 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.

01 January 2015 4,123 23 View

What could these SEM samples possibly be?

I have a few SEM micrographs in hand but I couldn't tell exactly what is those samples. Could anyone help me to identify or maybe suggest the nature of these samples (including the minerals)?...

09 September 2014 1,199 10 View