I was acknowledged that true density must be used to compute required amount of nanopowders. How if only bulk density is available from supplier?

More Wei Xian Hong's questions See All

How to prepare OH- terminated Si Wafer?

Hi, Folks. I am working on the ALD project to deposit Al2O3 on the Si wafer from TMA and Water. I have struggled with the preparation of OH- terminated Si wafer. I have both Si(1 0 0) and...

08 February 2021 8,792 2 View

How could I get the P-value from the mean, SEM, and n of different groups in the t-test?

How could I get the P-value from the mean, SEM, and n of different groups in the t-test without the original data? For detail, I would like to know the P-value between BMP-2: 50ng/ml group and the...

06 February 2021 6,539 4 View

Why are my western blot bands so distorted?

Hi guys I'm out of ideas here please help! I've never had consistent problem like this doing westerns before and I can't figure it out. The condition used: - First 4 lanes have 50ug protein in...

04 February 2021 2,297 3 View

What are the possible drawbacks of using miRNA sponge to enhance the specificity of gene expression?

I am searching for miRNA repeats put between WPRE and 3'LTR of my lentivirus, in order to enhance the specificity of transgene expression in human neuron cells. But if clinically translation of...

26 December 2020 9,921 2 View

Real Time PCR: What is the justification for acceptable variance within 3 Ct? Is there any publication on this variance?

Hi all, I was not able to find any source with evidential justification for why the acceptable variance for internal control should be within 3 Ct and not other numbers of cycle of amplification....

17 December 2020 9,481 1 View

Methods for multivariate discrete-time time series clustering?

Can somebody suggest a popular method for clustering multivariate discrete-time time-series data ? My dataset is about water quality parameters taken in 6 stations by seasons in 5 years . Thank...

09 December 2020 6,933 12 View

Can Apparent Activation Energy determine Conversion Rate in a catalysis reaction?

Recently, I got a concept that is contrary to my understanding from two papers. It can be described as follows, in brief: There are two catalysts for the same reaction, on the catalyst with higher...

09 December 2020 2,406 28 View

What is the standard preparation procedures of Powder X-Ray Diffraction (PXRD) sample?

Recently I started to use XRD to study the structure of some molecular sieves. My powder sample was prepared by grinding in a mortar, drying in an oven, and loading on the sample holder. However,...

03 December 2020 7,504 8 View

Could anyone professional help me to solve this problem?

I have installed the software BRUKER Flexanalysis 3.4 on my computer successfully. But when I tried to import the MS data produced by BRUKER MALDI-TOF-MS, I met with an error described in the...

10 November 2020 8,205 1 View

How to prove the hypermethylation of a certain gene inhibits the gene expression?

Hi, As described, recently we found a gene was silenced in various tumor, and its promoter was alwasy hypermethlated. When using certain treatment to induce the gene expression, we found its...

04 November 2020 7,054 3 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 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 does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

How to delaminate copper in water-based anodes?

Hello everyone, I'm looking for a way to delaminate copper current collector of water-based anodes in Li-ion batteries without damaging the graphite film. I tried different materials such as HNO3...

24 February 2021 3,785 3 View

Thermal reduction of graphene oxide.?

I am trying to reduce graphene oxide by thermally but I have no proper information regarding this. Can any one help me regarding the details about temperature and time for the reduction of...

23 February 2021 4,155 4 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

Is there a suitable way to confine cell attachment area inside a multi-well plate?

Are there any types of cylindrical cell culture inserts that are designed to confine cell seeding area? Say, if I'm using a 12 well plate (3.5 cm^2/well), but only want to seed cells in the middle...

22 February 2021 7,127 4 View

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

Didericus Hasselman

You may want to fill it with water and determine the amount it takes. Unfortunately, this may also fill the open pores in the particles. Good luck,

Kamil Oster

Have a look at my article in which I described your question:

Article Understanding the heat capacity enhancement in ionic liquid-...

Wei Xian Hong

Thanks a lot Kamil Oster. Will take a deeper look on the paper.