By collecting and categorizing our activity on Twitter, the Twitter Corner is intended to provide updates and relevant information on CBRN weapons.

The widget below shows our most recent tweets. To read only tweets related the chemical, biological, radiological, or nuclear weapons, click on the Twitter Corner menu and select the desired page.

Today, on the anniversary of the attack on Duma, we are releasing our new interactive web portal, making available our dataset of 345 chemical weapons attacks over the course of the Syrian war. We hope this will give a sense of the scale of the challenge.

Nowhere to Hide

The Specter of Chemical Weapons Use in Syria

chemicalweapons.gppi.net

@francis95641723 @gregkoblentz @OPCW @ACTGregWebb @ArmsControlNow Glad to hear our work is of interest for your studies! You will have access to the paper soon.

"Updating the CWC: How We Got Here and What Is Next, " by Stefano Costanzi and Gregory Koblentz in this month's #ArmsControlToday.

Read more at https://t.co/yWaHBB4swp

Last year, the @OPCW updated its list of chemical warfare agents for the first time since the treaty was signed in 1993. Find out what happened in this article by @s_costanzi and me in the latest issue of #ArmsControlToday by @ArmsControlNow

Arms Control Assoc on Twitter

“"Updating the CWC: How We Got Here and What Is Next, " by Stefano Costanzi and Gregory Koblentz in this month's #ArmsControlToday. Read more ...

twitter.com

@blumscientific @francis95641723 @OPCW @OPCW_ST @gregkoblentz @RichardCupitt Any insights @blumscientific?

@francis95641723 @OPCW @OPCW_ST @gregkoblentz @RichardCupitt I am glad to hear that you find my tables of useful. The substituents don't need to be the same. Note that I just updated the figure.

@blumscientific @francis95641723 @OPCW @OPCW_ST @gregkoblentz @RichardCupitt It is unclear whether this is the correct interpretation of the entries, or if the entries should be interprered as featuring an alkylidene carbon with an R substituent that could be a hydrogen or an alkyl/cycloalkyl group up to 10 carbon atoms (for a total of 11 carbon atoms).

@blumscientific @francis95641723 @OPCW @OPCW_ST @gregkoblentz @RichardCupitt In my table, I show the alkylidene carbon as a fixed component of the structure, with an attached R group that could be a hydrogen or an alkyl/cycloalkyl group up to 9 carbon atoms (for a total of 10 carbon atoms, including the alkylidene carbon).

@blumscientific @francis95641723 @OPCW @OPCW_ST @gregkoblentz @RichardCupitt If that group were to be a hydrogen, the whole amidine substituent would fall apart.

@blumscientific @francis95641723 @OPCW @OPCW_ST @gregkoblentz @RichardCupitt Importantly, the alkylidene group (despite the way entries CWC 1A13 and 1A14 are written) cannot be a hydrogen either.

@blumscientific @francis95641723 @OPCW @OPCW_ST @gregkoblentz @RichardCupitt I updated the figure, to show that the dialkylamino R groups cannot be hydrogens.

@francis95641723 @s_costanzi @OPCW @OPCW_ST @gregkoblentz @RichardCupitt Authorative OPCW document: The dialkylaminogroup is (Cyclo)Alkyl (C1-C10) the other two are either H or (Cylco)Alkyl (C1-C10)

"Many commonly used items, toilet facilities, and air samples had evidence of viral contamination, indicating that SARS-CoV-2 is shed to the environment as expired particles, during toileting, and through contact with fomites."

peter vikesland on Twitter

“New pre-print from U. Nebraska Medical Center. Transmission Potential of SARS-CoV-2 in Viral Shedding Observed at the University of Nebraska Me...

twitter.com

Full length SARS-CoV-2 spike protein with glycans running in MD shows vastly altered accessibility for small molecules and antibodies (aka #glycotime for the #COVID19 #demogorgon) @LCasalino88 (movie) @zied_gaieb @abbydommer @AmaroLab

Load More...