Low-power vacuum pumps are commonly used for Southern and Northern transfer from agarose gels and for slot and dot blotting. Unfortunately, commercially available vacuum pumps are expensive and susceptible to contamination with transfer reagents. The following describes the use and construction of a very simple and cheap apparatus, which generates and measures a partial vacuum as effectively as...

In this research, squeezing fragility due to thermal bath, in quantum squeezed state generation, is simulated. For purpose, single mode dissipative cavity with non-zero second-order susceptibility used. Cavity nonlinear medium driving by laser pump known frequency, and pairs of identical photons are created, one-half frequency pump. This process as degenerate parametric down conversion. the abs...

We study the nonlinear QED signature of x-ray vacuum diffraction in head-on collision optical high-intensity and free-electron laser pulses at finite spatiotemporal offsets between foci. The driven scattering signal photons outside forward cone probe constitutes a prospective experimental quantum nonlinearity. Resorting to simplified phenomenological ad hoc model, it was recently argued that an...

Silica-based sol-gel antireflective (AR) optical coatings are critical components of high peak power laser systems. Water vapor and volatile organic compounds can contaminate these coatings, reducing both their antireflective efficiency and laser-damage resistance. Previous work has shown that alkylation of free hydroxyl groups on the silica sol-gel with organosilicon compounds in solution can ...

Displacement of oxygen by an inert gas is a method for attaining anaerobiosis which is preferred by many bacteriology laboratories because of the low cost of the process, and because of the small but real danger of explosion when the alternative, hydrogen with ignition, is used. Several cycles of evacuation and filling are necessary; usually, oxygen-free nitrogen is used with a final charge of ...

As radioactive wastes, contaminated vacuum pump oils from tritium-processing facilities are challenging to dispose of. In this study, we investigated the mechanism of the tritium–hydrogen (T–H) exchange reaction between the tritiated water (HTO) and many typical organic molecules in vacuum pump oil using a density functional theory (DFT) method. The T–H exchange reaction could proceed with two ...