Employers of non-EU workers in UK

Read Rare Books online

http://rarebookroom.org/

Read pages of books from Shakespeare, Benjamin Franklin, Redouté, Galileo, Copernicus, Louis Renard, Kepler, Einstein, etc, etc.

 

Robert Hooke’s Micrographia from 1665 is one example of what can be browsed.

Example content from Rarebooks.com. A page showing the head of a fly from Robert Hookes Micrographia.

Top Ranking Journals in Metallurgy (google Journal Impact Factors)

https://bainite.wordpress.com/2015/07/21/metallurgy-journal-impact-factors/

https://scholar.google.co.uk/citations?view_op=top_venues&hl=en&vq=eng_metallurgy

Publication h5-index h5-median
1. Materials Science and Engineering: A 56
2. Metallurgical and Materials Transactions A 38
3. Intermetallics 36
4. Materials Characterization 30
5. Transactions of Nonferrous Metals Society of China 30
6. International Journal of Refractory Metals and Hard Materials 28
7. ISIJ International 28
8. Journal of Materials Engineering and Performance 27
9. Metallurgical and Materials Transactions B 27
10. Materials Science and Technology 24
11. Journal of Thermal Spray Technology 24
12. Science and Technology of Welding and Joining 23
13. Archives of Metallurgy and Materials 20
14. Journal of Iron and Steel Research, International 19
15. Steel Research International 19
16. Metals and Materials International 18
17. Metalurgija 17
18. Oxidation of Metals 16
19. International Journal of Minerals, Metallurgy, and Materials 16
20. Journal of Materials Research and Technology 15

British library Oral History Collection

Harry Bhadeshia fans shouldn’t overlook this important resource:

Harry Bhadeshia – Oral history of British science

Harry Bhadeshia British Library

Megaprocessor

Today I visited the Cambridge History of Computing Museum: http://www.computinghistory.org.uk/

I met James Newman, the inventor of the megaprocessor. He described the process of designing and building the machine, and stepped us through some clock cycles.

What is VX and safe use of VX

VX is a chemical nerve agent, discovered in the 1950s by ICI chemist Ranajit Ghosh.

Like Gerhard Schrader, an earlier investigator of organophosphates, Ghosh found that they were quite effective pesticides. In 1954, ICI put one of them on the market under the trade name Amiton. It was subsequently withdrawn, as it was too toxic for safe use. The toxicity did not go unnoticed, and samples of it had been sent to the British Armed Forces research facility at Porton Down for evaluation and several members of this class of compounds became a new group of nerve agents, the V agents. The best-known of these is probably VX, with the Russian V-Agent coming a close second (Amiton is largely forgotten as VG). This class of compounds is also sometimes known as Tammelin’s esters, after Lars-Erik Tammelin of the Swedish National Defence Research Institute. The name is a contraction of the words “venomous agent X”.

VX can also be delivered in binary chemical weapons which mix in-flight to form the agent prior to release. Binary VX is referred to as VX2, and is created by mixing O-(2-diisopropylaminoethyl) O′-ethyl methylphosphonite (Agent QL) with elemental sulfur (Agent NE) or by mixing with sulfur compounds.

 
VX and similar nerve agents (Sarin etc) are liquid at room temperature and pressure, to make them airborne requires atomising the liquid. VX is a potent poison which is stable for a long time, so there was a military interest in using it to deny access to an area, however many countries (not DPRK / North Norea) have signed treaties agreeing not to use of the substance as a weapon.
 

News reports this morning were saying that the assassins were akin to suicide bombers in dealing with such a dangerous substance, but if exposure could be limited, for example forming the VX on the target, then the risk from the VX agent could be limited, and the main risk would be capture. In Malaysia being convicted of murder automatically results in the death penalty, which must be a risk for anyone suspected of being an assassin.

Source Wikipedia https://en.wikipedia.org/wiki/VX_%28nerve_agent%29
Source University of Birmingham http://www.birmingham.ac.uk/accessibility/transcripts/nerve-gas-in-warfare.aspx

Properties of a nanostructured bainitic steel

In some recent work, we produced a nanostructured steel was produced using a clean steel-making technique. Hoping that applying VIM-VAR processing would achieve better mechanical properties by reducing tramp elements, like sulphur and phosphorous. Resulting in less problems of embrittlement by these elements and by manganese sulphide inclusions, etc.

No doubt these steels have impressive combinations of properties. We had the chance to measure many different mechanical properties of the same batch of steel. Only complicated by the fact that we were trying to develop heat treatments to improve the properties at the same time.

These results have been published in Materials Science and Technology, here: http://dx.doi.org/10.1080/02670836.2016.1271522

The maximum strength of the material recorded was 2.2 GPa at yield, with an ultimate tensile strength of 2.5 GPa, accompanied by a Charpy impact energy of 5 J, achieved by heat treatment to refine the prior austenite grain size from 145 to 20 µm. This increased the strength by 40% and the Charpy V-notch energy more than doubled. In terms of resistance of the hardness to tempering, the behaviour observed was similar to previous alloys. Despite reducing the hardness and strength, tempering was observed to reduce the plane-strain fracture toughness.