What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

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I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

HPLC baseline failure (ACN/Water)?

My baseline increases without any explanation, it is only fixed by changing the solution B, will it be the column? Reagents? Bomb? Detector? Solution A: H3PO4 0.01% IN WATER Solution B: H3PO4...

21 February 2021 5,656 3 View

Algorithms to filter corrective max and min from a set of data?

I've got this 5 year Direct Normal Irradiance data I downloaded from https://re.jrc.ec.europa.eu/. I ordered this by year and by every 24 hours because I need the DNI curve by max in summer, min...

17 February 2021 2,777 5 View

How to improve the buffer capacity of sea water?

Hello everyone I would like to improve the buffer capacity of seawater (pH ~8) in order to dissolve as much CO2 as possible without dropping the pH below 7.5 (a range between 7 - 7.5 is...

17 February 2021 2,797 2 View

Resume Book UEP2013 Asian Edition, dis somebodey has it?

I am looking for a copy of the resume book of UEP2013 Asian Edition (Urban Environmental Pollution 2013 Asian Edition) held in Beijing. If somebody has it, please I would like to obtain an...

11 February 2021 2,247 2 View

How do they fill/replace metal hydrides in vessels?

Surely they will want to avoid contact with air/moisture, so what is the procedure for this?

23 January 2021 428 2 View

Why and how to avoid negative values in optical density by spectrophotometry when measurements corrected by blank solvent?

I am trying to assess chlorophyll-a content from coral tissue using spectrophotometry (with SPECTROstar Nano, BMG). However, I always seem to obtain some negative values in my optical density raw...

20 January 2021 1,542 4 View

What type of spectral radiation has greater penetration on materials, UV or IR? What book or source do you recommend for information on this?

I need information concerning the penetration and reflection capacity of ultraviolet and infrared radiation wavelengths on different most common materials. Edit. Can somebody recommend a book to...

16 January 2021 8,051 6 View

What is the best way to differentiate L. rhamnosus and L. casei in plate co-cultivation?

I'm having troubles in the differentiation and quantitation of each bacteria population during co-cultivation. The morphologic characteristics are very similar and it's really difficult to count...

13 January 2021 1,550 1 View

About nanocapsules: how can I interpret smaller nanoparticle size by enhancing the polymer amount used?

in most articles nanoparticle size decreases by lower amount of polymer

16 November 2020 4,669 6 View

Can you suggest the encapsulation method for leaf part of the plant?

Greetings, I am interested to study the effects of encapsulated leaf extracts on the self-healing property of a coating. Can anyone suggest a suitable method for me to fabricate this micro OR...

05 November 2020 327 4 View

How to interpret TGA degradation temperature shifts in encapsulated essential oil?

Hi, I am encapsulating essential oils in silica mesoporous nanocapsules. I performed a TGA just with the essential oil and another one for the silica nanocapsules loaded with the oil. I identified...

23 April 2020 3,069 1 View

Why do the silica nanocapsules release the highest value of MBT at neutral pH?

2-mercaptobenzothiazole loaded silica has been stirred in 3.5 wt. % NaCl in H2O solution. The release of MBT was evaluated by UV-Vis in different pHs (3 - 11). However, the highest release of MBT...

28 May 2019 1,428 5 View

Why do the silica nanocapsules release the highest value of MBT at neutral pH?

2-mercaptobenzothiazole loaded silica has been stirred in 3.5 wt. % NaCl in H2O solution. The release of MBT was evaluated by UV-Vis in different pHs (3 - 11). However, the highest release of MBT...

04 May 2019 7,147 6 View

Cellulose and lignin as nanocarriers for drug delivery?

How hydrophobic polymers as cellulose and lignin can be used as efficient nanoparticles for poorly water-soluble agent delivery in aqueous environment (blood, extracellular fluid, in vitro...

01 February 2018 1,927 4 View

How can add phase change materials in comsol multiphysics?

what physics can I use to modeling Phase change material nanocapsule in comsol multiphysics??? or what sample can help me to solve this project?

11 December 2017 5,029 5 View

How to study 'Long term stability' of nanoparticle ? What does it mean in biomedical application.

29 May 2017 9,651 8 View

How to study 'Long term stability' of nanoparticle ? What does it mean in biomedical application.

04 May 2017 7,186 9 View

How can I reduce the size of nanoparticle after centrifuging and how can I prevent the aggregation?

I want to coat a PLGA nano-capsule with Chitosan and TMC and Mannosilated Chitosan, but after centrifuge the coated nano particle size increased. centrifuge details: 20000g for 5 min with glycerin...

08 September 2016 7,743 6 View