Literature on snowflake aggregation?

I am looking for literature suggestions on the topic of snow aggregation. My main interest is on the aggregation process itself (rather than papers describing aggregate snowflakes characteristics)...

19 February 2021 2,197 3 View

Polymer synthesis simulation - which software?

Hello, I am a synthetic polymer chemist. I would like to explore the simulation counterpart of my experimental work. Can anyone suggest a good software able to simulate polymerization reactions,...

04 February 2021 2,672 4 View

ASTM or ISO standard test for duplex coatings?

Dear all, I would like to conduct scratch and linear reciprocating tribo-test on my magensium alloy, which has a plasma electrolytic oxide (PEO) layer of about 20 um and 10 - 20 um of Parylene...

25 January 2021 9,709 2 View

Does anyone know about a good article/book about the correlation between the water crisis and the macroeconomic decisions?

I'm writing a thesis about the macroeconomic issues to face during a water crisis

25 December 2020 6,321 1 View

Any data or studies available on wall thermal insulation with glass bottles?

I am searching for data and studies about thermal performances of walls insulated using recycled unbroken glass bottles, to be used as part of the structure itself, or as filling material of a...

29 November 2020 7,792 2 View

EDX sample preparation of a coating/metal cross section?

The sample is piece a magnesium alloy (dimension: length - 20mm, width - 9.7mm, thickness - 3.5mm), which is coated with epoxy and silicone coating on each side of the surface. The coatings do not...

05 January 2020 3,375 3 View

Where do I search for a validated questionnaire survey?

My research is on critical illness insurance/ compensation among insured. So survey questions for factor influence the uptake or awareness would be best. So far I have go through literature...

23 September 2019 1,437 2 View

How to modify a plasmid DNA with a thiol group or any functional groups for coupling?

I am trying to conjugate a plasmid DNA with an -SH activated PEG. The thiol group modification is possible for linear single strand DNA. I wonder if it possible to introduce in a plasmid DNA, too.

03 August 2019 135 1 View

How do I calculate the Partial Molar Volumes for a binary mixture of two co-solvents starting from its density?

I have a bunch of binary mixtures of two solvents (i.e. water and ethanol) of different composition, from water mol.frac. 0 to 1. For each of them I have the experimental density. Now I want to...

31 December 2016 4,094 3 View

What are the basics to maintain a micropipette in good working conditions?

26 November 2014 9,393 4 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Should we change media after1st 6hrs after plating HUVEC bought from INVITROGEN?it's not recomended by invitrogen.Will DMSO present in stock matter?

We have HUVEC bought from Invitrogen. Cat no -C-003-5c. while first plating the cells we have bought the protocol suggests not to centrifuge the cell with media to remove the DMSO. Should we...

02 March 2021 3,713 2 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

Benefits of the 24 welled plate?

We have always used the 96 welled plate, the 48 welled plate but apparently there is much evidence on the 24 welled plate and above all its benefits.It states it is the same you would use on ELISA...

28 February 2021 1,149 1 View

Can bacterial suspension be pipetted directly onto petri dish and agar poured onto it?

Hi, recently I encountered a protocol for plating which was not the usual method I have been practicing (pour LB agar onto plate, allow it to solidify, pipette bacterial suspension onto plate,...

28 February 2021 7,292 3 View

What is the exact mechanism of the antimicrobial effect of local anesthetics?

The antimicrobial effect of local anesthetics has been known for more than 50 years, but it still seems to have an unclear mechanism of action. which bacteria? which concentration? etc etc. ....

27 February 2021 4,450 2 View

What is the best surface to culture cells isolated from a skin biopsy?

Hello, recently I am having some difficulties with maintaining the cell culture of primary cells isolated from a skin biopsy (normal and malignant). The coating of culture plates with Matrigel (a...

26 February 2021 6,151 2 View

Difficulty in cloning of 1kb gene into vector?

I am facing difficulties in cloning a 1kb gene into a vector (pJIT163). I have my gene on interest (GOI) in pUC57 and want to clone in pJIT163 using SalI and BamHI restriction sites. I am getting...

25 February 2021 3,221 7 View

Uncertianiny in using dry or wet basis in mixing a sediment with fuel oil?

Hello I'm currently working on a topic related to studying the anaerobic biodegradation of TPH in marine sediments. In this work, sediment should be mixed with fuel oil to a concentration of 20 g...

24 February 2021 9,839 3 View