What's about Bronze Age amber ?

01 January 1970 1 2K Report

Hi Stephanie,

firstly I would like to wish you a happy new year. Then I would like to ask you, if I could meet you at Würzburg department to talk about your research projects, as I feel curiosity for Bronze Age amber in Southern Germany. Maybe questions related to glass could be helpful for me.

Kindly

Joachim Neumaier

There are burials in the Franconian Main valley in which glass and amber beads are combined. It will be a great project to follow the questions, if there is a regular combination of both and if and in which way they are related to precious metal objects.

Badges
Science topic

More Joachim Neumaier's questions See All

How can I separate graphene from amorphous carbon of similar particle sizes?

The starting material is a finely ground powder. Some particles contain more graphene than others.

30 July 2024 3,978 2 View

Why Does Agarose Gel Electrophoresis give this sort of image?

I complexed my sample with DNA and obtained an image. However, the image shows some migration above the actual gel height (shown by arrow). Does anyone have an of what could be the reason for this...

02 November 2023 6,251 3 View

Can anyone help me with possible reason why I could have an over estimate of protons in 1H NMR analysis?

I did a reaction, basically it is the thiol-Michael Addition where I tried to conjugate a -SH group to the double bound of an acrylate group. The reaction was aided with TCEP/TEA as catalyst....

31 August 2023 7,709 4 View

Why is Hausman Test cannot work on my panel ARDL?

I am doing panel ARDL on STATA and want to run a Hausman Test (command xtpmg) to determine which estimator is most appropriate (MG, PMG or DFE). I first tried PMG vs MG and the result shows...

09 May 2023 8,902 0 View

How to deal with variables integrated of order 2 in panel data?

I have tested IPS unit root for my regression variables. However, one of my variables are still non-stationary after first difference, but stationary at second difference. May I know what are...

04 May 2023 977 2 View

Unit root test for different deterministic trend on dependent variable. What is the suitable test?

Hello, I want to do a panel data analysis. However, I figured that my dependent variables across entities each have different trend (constant, increasing, decreasing). I would like to first do...

01 May 2023 3,280 2 View

JEOL Spiral-ToF?

Hello to the community, We are planning to purchase a Maldi-ToF system to expand our MS capabilities. I have noticed the Spiral-ToF from JEOL. However, the device is probably a niche product at...

16 March 2023 5,936 2 View

Do anyone have Cabbage butterflies (Pieris rapae and Pieris brassicae) in culture?

We are working with ants as biological control agents against cabbage butterflies. In connection with this, we would like to start a culture of both large and small whites (Pieris rapae and Pieris...

14 November 2022 2,079 0 View

What is a good antibody to identify endothelial cells and differentiate from glia?

WE use ZO-1 - but see weak signal with hbec51 cells

07 February 2022 2,454 2 View

What is the difference between a Knowledge Graph and Ontologies?

P1: Ontology + Data = Knowledge Graph (KG) P2: If a KG is the sum of these two summands, it follows: C: An ontology is a framework for a KG As a framework, an Ontology consists of person data,...

12 December 2021 941 3 View

Fabrication of narrow glass capillary (inner diameter 200~500 nm)?

I need a very narrow glass capillary for my research. How can I make a glass capillary with an inner diameter of around 200 to 500 nanometers?

08 August 2024 8,915 0 View

Is anyone aware of any Bronze Age or Neolithic pendants made of siltstone with serrated edges?

Excavation in 2007 in Northern Scotland along the East Coast revealed a domestic site containing the unbroken half (other half is missing) of a perforated circular disc measuring L 37mm x W...

27 July 2024 6,019 0 View

How to create parameter and coordinate files for ligand in amber when FATAL error (maybe due to duplicate bond specifications) happens?

Hello, I'm trying to create parameter and coordinate files for a drug (PRG-A01) found on the following page: http://www.probechem.com/products_PRG-A01.html I used the guide made by Michael...

17 July 2024 3,472 3 View

Not able to give GAFF forcefield to my ligand?

I have been able to assign the CHARMM forcefield to my ligand i.e. acetyl coenzyme A but not the amber forcefield. I want to run amber forcefield and the parameterization of ligand is failing. I...

15 July 2024 7,323 1 View

Does the potentiostat have to be in a fume hood when polymerising the PANI?

I will polymerise Aniline on ITO glass WE, using 1M of H2SO4 and a potentiostat. However, I am not sure if I have to do the electrochemical polymerisation inside a hood. Is it necessary? Is the...

10 July 2024 2,937 3 View

Where to source glass rings compatible with cell culture?

Hi all, I am looking glass cilinders that have an open flat bottom and top. Preferably with the inner diameter in the range of 2 cm. It's similar to the ones found on multi-electrode arrays for...

06 July 2024 5,846 1 View

What is alternative for PMMA?

If we want to introduce a material similar to polymethyl methacrylate "with the characteristics mentioned in the next paragraph" that can be added to a precursor and create a composite, which...

03 July 2024 2,371 1 View

Why PDMS is not hardening ?

I use PDMS to build a microfluidic system, but it is not hardening at all, although I use TEOS as a cross-linker and also ATPES in a ratio of 1:10, and it's been 3 days at 80 degrees of 3 ml cast...

01 July 2024 604 3 View

To generate hydroxyl radicals the photcatalyst need to be in conatct with water or air pollutant?

Is direct contact of polllutant and catalyst needed? or indirect contact just like photocatalyst wrapped inside glass can also create hydroxyl radicals and elimnate pollutants near to its wrapped...

23 June 2024 3,249 5 View

Where can we get few mm diameter polished circular glass plates?

who retails few mm diameter polished circular glass plates ? thickness 0.1 to 1 mm diameter 1 to 3 mm ordinary or fused silica glass polished on both sides and the edge

16 June 2024 763 1 View