Can electrophoretic mobility measurements of polymer-coated AuNPs be used to infer the role of charge (if any) in their dispersion stability?

Hello Everyone, We have stable citrate-coated AuNPs dispersed in water. Different polymeric protective coatings (PEG, PVP, BSA) have been chemically grafted to the citrate-coated AuNPs for...

17 November 2020 2,903 16 View

How does a Bi-Static FMCW radar detect a Zero Doppler target?

27 September 2020 8,370 6 View

In simple words, what is the difference between Isoelectric Point (IEP) and Point of Zero Charge (PZC)?

There seems to be a lot of arbitrary and sometimes contradictory explanations for the difference between the Isoelectric Point (IEP) and the Point of Zero Charge (PZC). Other times, the two terms...

15 February 2020 6,617 9 View

What is the difference between a stabilizing agent (stabilizer) and a dispersing agent (dispersant) in a colloidal dispersion?

Can these two terms be used interchangeably as commonly seen in the literature? Under which category are surfactant and polymer additives or coatings classified when used in colloidal...

23 August 2019 1,833 6 View

Can we have solid bridges forming between nanoparticles in aqueous environments?

Solid bridging (e.g., due to ambient-temperature sintering and solid-solid diffusion) often occurs between dried nanoparticles. My questions is: Upon the "physical" contact between two...

21 August 2019 3,779 6 View

Is it possible to define stream-function in 3D flow? If so, what is the physical meaning of stream-function in 3D?

I am aware that several definitions of stream-function in 3D flow do exist in the literature. But I am at a loss on what stream-function physically means in 3D.

10 May 2019 5,571 6 View

In the laminar flow of a nanofluid with a liquid base fluid, can we use Knudsen number to show that the liquid phase can be treated as a continuum?

If so, how can we define the Knudsen number for solid nanoparticles dispersed in a liquid carrier? And how can the mean free path of liquid molecules be calculated? Conventionally, Knudesn number...

30 March 2019 8,265 28 View

Do nanoparticles acquire a surface charge when suspended in pure water?

If the answer is yes, then does the charge acquisition mechanism change with respect to metallic, metal oxide, and carbon-based nanoparticles? And would it also change between totally pure water...

13 February 2019 6,698 5 View

Problem on reliability statistics - negative Cronbach's alpha?

In my study I want to see whether 3 items in a questionnaire relate to autonomy through a reliability analysis. The following three items are relevant I think: - Availability of task enrichment...

25 July 2018 3,223 2 View

What techniques can be used to locate fractures in underground metal water delivery pipes?

I recently met with an senior executive of a Water delivery company. #1 concern was the inability to locate leakage in underground mains pipes. Typically 40% of water is lost between source and...

24 May 2018 4,311 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,602 4 View

How to model Supercritical water gasification (SCWG) process in Homer software?

Hi everyone How to model Supercritical water gasification (SCWG) process in Homer software?

25 February 2021 4,075 1 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

Is it possible to define biogas as a fuel in the reformer process(scwg) in Homer software?

Hi every one Is it possible to define biogas as a fuel in the reformer process(scwg) in Homer software? Biogas fuel is not available in the options thanks

23 February 2021 6,518 3 View

Are there any candidates for an Einstein's bare cosmological constant?

It is commonly accepted that General Relativity has its own 'bare' cosmological constant that contributes together with the cosmological constant resulting from vacuum energy density for an...

23 February 2021 5,448 8 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View