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Questions related from Tatiana Herrera Gamboa
Hello everyone I would like to know if there is some research center about arthritis or autoimmune diseases, using polymeric nanoparticles. Thank you so much for the information. Have a nice day :)
02 February 2017 7,249 0 View
Hello everybody I would like to know if there is a really good online course about GC, GC-MS, GC-MS-MS, or one of the best books about instrumental chemistry. I would like to improve my knowledge...
01 January 2017 7,655 2 View
Hello everyone: I need some help, I got confused about those kind of methods: potentiometric and electrometric method, is it a different property measure? Please, send me some link (PDF or really...
06 June 2016 280 3 View
Hello everybody I would like to know where may I find a standard method for quantify or determinate magnesium carbonate and calcium carbonate in soil. Thank you so much for your help have a...
04 April 2016 6,991 6 View
Hello everyone I will do a validation of carbonates and bicarbonates analysis in soils (through titration analysis) but I have found that would be some interferences of some ions present in the...
04 April 2016 1,886 4 View
Hello everyone I've been working with PLA nanoparticles forma drug delivery, but I had had some troubles with the synthesis: I have no changed anything in my procedure, and I got differents...
02 February 2015 8,412 6 View
I'm preparing polymeric nanoparticles using emulsification solvent evaporation method, but I haven't got the characteristic emulsion that indicates the nanoparticles formation.
11 November 2014 9,215 8 View
Hello everyone I'm using reversed phase HPLC, with a mobile phase acetonitrile (9℅) : phosphate buffer (91℅). When I pass that mobile phase, a huge noise appeared. I washed the C18 column with 1...
10 October 2014 7,365 11 View
Hello everybody I'm doing an experimental design (23 factorial experiment), but I need to optimize that experimental design, I haven't found the exact information to do that, maybe using...
07 July 2014 3,099 6 View
I'm using a biopolymer and I need to dissolve it in a organic solvent, but also, I'm using a protein. Which solvent do you advise to use? Maybe DMSO?
10 October 2013 2,671 2 View
When I add water to make the diffusion step, I see two phases. Is that normal ?
10 October 2013 2,266 5 View
I use emulsification-diffusion method to prepare PLA nanoparticles, but when I pass the sample to the equipment, this text appears:"Result: refer to quality report", and it says that the sample is...
09 September 2013 7,097 5 View
I have been reading about the emulsification-diffusion method for nanoparticles synthesis, and, in some articles, they say this: "The encapsulating polymer is dissolved in a partially...
08 August 2013 5,791 3 View
The simplest explanation thanks ;)
07 July 2013 2,330 8 View
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06 June 2013 2,888 1 View
I want to do an experimental design to synthesize some polymeric nanoparticles, so to obtain the best size and zeta potential. I heard about Statgraphics, but am unsure of how to use it. If anyone...
06 June 2013 6,094 13 View
If I centrifuge some polymeric nanoparticles at 6000 rpm, there's some precipitation. Is this because some polymer didn't form nanoparticles???
03 March 2013 7,127 5 View
I read in some articles that if the speed of homogenization (eg. ultraturrax) is higher then the nanoparticle size is smaller. But I did some experiments and I got the opposite result: If I...
03 March 2013 3,478 6 View
Just out of curiosity: when I filtrate some polymeric nanoparticles, through a millipore membrane (around 0.4 micrometers) the size is reduced. This happened because some polymer that did not form...
03 March 2013 7,154 12 View
Is the synthesis of bacterium DNA the same as the synthesis of human DNA?
02 February 2013 4,255 3 View
Which solvent can I use? I'm trying to dissolve PLA in chloroform, but I am getting some problems, can I use dichlomethane?
02 February 2013 2,966 26 View
I have a doubt about this method: I read in some articles that the author added water after homogenization but others do that after solvent evaporation. Which is the best way?
02 February 2013 5,544 4 View
I synthesized some nanoparticles, but I had to dissolve the polymer (PLA) in chloroform, and I'm not sure how to know if there isn't chloroform in the colloidal suspension after solvent evaporation.
01 January 2013 1,067 19 View
I want to know the encapsulation of my drug and for the blank (autozero) I measured the absorbance of the solution or emulsion of poloxamer and gelatin without drug, but the absorbance insn't...
01 January 2013 7,997 7 View
I need to dissolve PLA in a chloroform-acetone solution, but there is still some PLA suspended in the solution.
01 January 2013 7,408 3 View
I'm not sure if I can synthesize nanocapsules with this method as I read in some articles
10 October 2012 1,641 2 View
Hello everybody: I need some help for determining the drug loaded in nano-capsules, a simple one question. Thanks
09 September 2012 8,854 19 View
I need do some nanocapsules with homogenization under reduced pressure, but I am not sure how to.
09 September 2012 9,613 0 View
Your toughest technical questions will likely get answered within 48 hours on ResearchGate, the professional network for scientists.
06 June 2012 5,168 0 View
I'm reading about particle size (nanosize) and in an article they said: "The particle growth was monitored using UV-Visible absorption spectroscopy " I don't understand so well, how is it the peak...
05 May 2012 9,328 3 View
Since last 2 weeks i've been looking for some kind of method to do that
03 March 2012 7,319 5 View
I'm working with nanoparticles (NPs) and I want to know what kind of starch I can use as a capping agent.
03 March 2012 4,377 12 View
I couldn't find any article that talk about it, only I found some in which used polysaccharide, and it acts as a reducting agent and protecting group. I'm searching for some information with...
02 February 2012 7,302 4 View
I need a method to use it in attachment polysaccharides or disaccharide over silver nanoparticles. Does anyone have information about links,webs pages or articles?
02 February 2012 9,294 0 View
