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Questions related from Kashmiri Deka
It is well-known that manganese oxides predominantly show T1 MRI contrast and their T2 MRI contrast ability is very low. However, recently I observed T1-T2 dual contrast shown by water dispersion...
10 May 2023 5,993 2 View
Can anyone provide any reported method of synthesis of metal silicate by thermal plasma route?
24 February 2022 6,852 0 View
I have obtained nitrogen adsorption desorption isotherms for a mesoporous sample. From these isotherms and BJH size distribution, I have calculated surface area, pore volume and average pore...
17 September 2019 1,836 4 View
I have performed in vitro MRI experiments taking solutions of an MRI contrast agent in different concentrations in separate vials. I have obtained grey scale images as results. Can anyone please...
08 March 2018 6,126 2 View
I have developed a nanocomposite of two different systems. Individually, one of the systems is a good T1 contrast agent and the other is a good T2 contrast agent. Interestingly, both of them...
18 November 2017 547 3 View
We know that plants are also studied through MRI in addition to animals. We have a lot of reported materials dealing with enhancement of contrast of clinical/animal MRI. Is there any contrast...
10 October 2017 2,969 3 View
I work on MRI contrast agents. As we all know, we measure the TD-NMR relaxivity of water solution of our prepared samples to determine their efficacy for MRI contrast enhancement. Again, we do...
03 April 2017 4,619 0 View
I have synthesized nanoparticles (insoluble in water) out of which I want to make a film on glass. Can anyone suggest an ideal method for the same?
05 August 2016 6,869 2 View
I have synthesized a catalyst and I am applying it in catalysing biomass pyrolysis reaction to obtain bio-oil. The catalyst shows best performance when it is used at a concentration of 7% giving...
22 July 2016 795 5 View
We know that Mn2+ is stable as compared to Mn3+ and because of this MnO should be a more stable oxide than Mn203 and Mn3O4. However it is observed that synthesis is MnO is quite difficult and one...
23 April 2016 4,903 3 View
Generally, if we perform thermal decomposition reaction of a material with different heating rates, fractional conversion curves for different heating rates shift towards right with increase of...
09 February 2016 6,698 5 View
I prepared a sample containing C, Mn and O. The peak corresponding to C was much higher compared to Mn and O; yet the percentage abundance (both weight % and atomic %) was found to be lower for C...
18 November 2015 2,407 11 View
I have attached herewith TGA, DTG, DSC profiles for my sample. I am okay with the DSC result. But, the TGA is showing a negative percentage value and a total maas loss 132.03%. How can we explain...
12 November 2015 7,675 9 View
I have seen a lot of materials eg. cellulose, having peaks upside and downside in different papers (irresepctive of the unit being %/C or %/min) though they share the same peak position. Can...
09 November 2015 8,236 4 View
We know that a catalyst speeds up a reaction by decreasing the activation energy. Suppose a reaction has a negative activation energy ( consider -5 kJ/ mol). Now, towards which direction the...
29 October 2015 6,688 18 View
There are certain metal ions which are well known for T1 relaxation (eg. Mn2+) and there are some which show T2 relaxation more efficiently (eg. Cobalt ions). Metals like Gadolinium can show both...
26 May 2015 6,576 5 View
I want to synthesize mesoporous carbon shell encapsulated magnetic nanoparticle to be used as MRI contrast agent. For this, the whole system should be water soluble so that it can be used inside...
05 August 2014 3,255 7 View
05 August 2014 5,043 2 View
I have seen in literature that metal oxides play the role of catalysts in different reactions/processes. What is the reason that the metal oxides can act as catalysts?
29 July 2014 1,623 4 View
I have attached two papers describing mesoporous silica encapsulated nanoparticles as MRI contrast agent. In MRI, we see the realaxation of body water protons. The more the relaxation is the...
08 July 2014 2,259 3 View
