What is hydrogen bond in cellulose ?

Recently, I am interested in dissolving cellulose into a liquid. You know, it is very challenging even nowadays. Is there some excellent books, literatures or researching groups you recommended in...

04 May 2019 3,440 0 View

How to simulate the chemical composition of soil or clay?

Recently, I am interested in the acid buffer capacity of soil, clay, dust and ash. I want to use model compounds to estimate the which compounds really works in soil to show strong acid buffer...

03 April 2018 1,627 6 View

Which chemical in soil lead to the strong acid buffer capacity through cation exchange ?

It might be weak acid and acid salt, cation exchange and the existence of organic matter lead to the acid buffer capacity of soil. However, it was still confused me that which component results in...

03 April 2018 6,137 4 View

Why the cation exchange capacity of Fe is stronger than Al ?

03 April 2018 5,378 3 View

Can anyone suggest me some books or literature related to acid buffer capacity of soil ?

Recently, acid buffer capacities of soil were related with my research. However, the factors(cation type, weak acid or weak acid salt, organic matter content and so on) which influence the acid...

02 March 2018 8,957 0 View

How to understand cation exchange behavior in soil colloid ?

02 March 2018 7,578 0 View

Could the cation exchange capacity of Zn(II) be stronger than that of H ion?

01 February 2018 1,681 2 View

How to prepare ICP-AES samples for ion determination?

Recently, i am trying to detect ion contents in soil. The soil contains much aluminum and iron. I use 1 mL of nitric acid to digest the soil samples of 1g. This is conventional method to extract...

10 November 2017 7,713 5 View

Why is the cation exchange capacity of Fe(III) stronger than that of H ion?

Hi, everyone.Recently, I want to change the acid buffer capacity of soil or soil colloid by using FeCl3 and Hcl. I found FeCl3 showed better performance in changing the acid buffer capacity of...

09 October 2017 1,285 12 View

How to determine the redox potential of cellulose?

Hi, everyone. Recently, I want to detect the redox potential of cellulose by using electrochemical workstation. I am a little confused of the procedure of doing this detection. Should I use the...

01 January 1970 8,878 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

Energy minimization in LAMMPS using NVT ?

How do I do energy minimization in lammps with NVT ensemble ? I am using the following command and it does not seem to work. It stops at extremely high energy and gives me the error zero search...

01 March 2021 2,294 3 View

OpenBCI eeg--has anyone used them?

I'm looking to try out an off-the-shelf EEG set for some exploratory work. Curious if anyone has used the OpenBCI, and how much set-up work is required. I've heard they are more difficult to get...

01 March 2021 4,128 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Which group formation theory do you recommend for projects that aim to bring together entrepreneurs for training for regional development?

I would like to have ideas about which theories of group formation are suitable for entrepreneurial training projects, with the aim of creating bonds, building trust, and collaboration for...

28 February 2021 4,223 2 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

Your thoughts on the spherical densiometer to estimate relative species canopy cover?

Hi biologists and biogeomorphologists, I want to characterize vegetation plots on a transect that follows a successionnal gradient from a river bed to a mature forest. Ecologically, I am...

26 February 2021 5,720 2 View

Are there lab markers/pens resistant to Roti-Histol?

Hi, I'm looking for a pen/marker to write on the smooth, transparent (non-frosted) part of microscopy slides which does not get washed away by alcohols and most importantly Roti-Histol. I want to...

24 February 2021 9,902 5 View