Why use both bead beating and enzymes (lysostaphin and lysozyme) for DNA extraction from sputum samples?

Hello, I have read in a few publications that to extract total DNA from sputum samples, both bead beating and enzymes are used to disrupt the cells. Bead beating is supposed to be efficient in...

18 February 2021 3,360 2 View

How to make a site-Selective Electroless Nickel Plating?

I would like to plating Ni/Au on the selected area. Can anyone give me a suggestion? It is a bit like to make golden finger on PCB board. Instead with the PCB board, I use polyimide as my...

28 January 2021 8,330 1 View

How to use PVQ Psychometric Tool?

Hello, I'm doing a research about if psychometric tools can be translated into video games. My main major is video games. So I'm an absolute newbie with psychometric tools. I have chosen PVQ tool...

22 January 2021 5,992 2 View

How to measure the hardness for PLA & PHAs polymers?

Hello, I am a bit confused on whether to follow ASTM D785 (Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials) or ASTM D2240 (Standard Test Method for...

21 January 2021 7,487 4 View

Why isoelectric point (IEP) of alumina (Al2O3) dispersion decreases with the increasing of calcination temperatures?

We have prepared different alumina powders (fine/submicron-sized) from waste sources at different calcination temperatures (C.T.). From zeta potential-pH graph, we saw that IEP values decreased...

09 January 2021 9,404 3 View

Will there be two research designs if using Mixed Methods?

I am having a hard time with my dissertation pre-proposal (super long story, but I have no help). If I use the Mixed Method, will my research design will be both phenomenological and descriptive...

07 January 2021 5,007 3 View

The hospitals reported rise in ICU admissions of young COVID patients - Is the new strain of COVID to be blamed?

05 January 2021 3,141 12 View

How to plot a hardness mapping reading using origin software?

Hi, I have a rectangular sample and a set of hardness distribution readings throughout the sample. Can anyone here help me, how to map it using Origin software? Thank you.

02 January 2021 4,079 3 View

What is the new in new year 2021?

2020is finished and was very hard for millions now how to welcome new year.now what is our wishes in new year e year 2020 has been an unpredictable ride through the pandemic, protests and many...

01 January 2021 1,200 5 View

How microhardness is dependent on surface roughness?

Does polishing or finishing affect the microhardness of alloys and metal, if yes how are these characteristics are related empirically?

21 December 2020 1,198 3 View