Aqueous polymer quenchants are being used increasingly in steel heat treatment industries as a substitution for conventional quenchants. By adjusting the quench parameters of the polymeric media, it is possible to achieve desirable microstructure and mechanical properties in addition to reduction in distortion and cracking. In this work, Polyalkylene Glycol (PAG) aqueous solution was used as th...

Nonphotochemical quenching (NPQ) of excitation energy is a well-established phenomenon in green plants, where it serves to protect the photosynthetic apparatus from photodamage under excess illumination. The induction of NPQ involves a change in the function of the light-harvesting apparatus, with the formation of quenching centers that convert excitation energy into heat. Recently, a comparabl...

We develop a simple yet comprehensive method to distinguish the underlying drivers of galaxy quenching, using the clustering and galaxy-galaxy lensing of red and blue galaxies in SDSS. Building on the iHOD framework developed by Zu & Mandelbaum (2015), we consider two quenching scenarios: 1) a“halo”quenching model in which halo mass is the sole driver for turning off star formation in both cent...

In this paper we study the quenching problem for the non-local diffusion equation ut(x, t) = ∫ Ω J(x− y)u(y, t) dy + ∫ RN\Ω J(x− y) dy − u(x, t)− λu−p(x, t). We prove that there exits a critical parameter λ∗ such that for all λ > λ∗ every solution quenches and for λ ≤ λ∗ there are both global and quenching solutions. For the quenching solutions we study the quenching rate and the quenching set....

In a polymicrobial community, while some bacteria are communicating with neighboring cells (quorum sensing), others are interrupting the communication (quorum quenching), thus creating a constant arms race between intercellular communication. In the past decade, numerous quorum quenching enzymes have been found and initially thought to inactivate the signalling molecules. Though this is widely ...

A short summary of the physics underlying jet quenching is given.