Most cancers arise from oncogenic changes in the genomes of somatic cells, and while the cells may migrate by metastasis, they remain within that single individual. Natural transmission of cancer cells from one individual to another has been observed in two distinct cases in mammals (Tasmanian devils and dogs), but these are generally considered to be rare exceptions in nature. The discovery of transmissible...
Tag Archives: independent
Multistage coupling of independent laser-plasma accelerators
Laser-plasma accelerators (LPAs) are capable of accelerating charged particles to very high energies in very compact structures. In theory, therefore, they offer advantages over conventional, large-scale particle accelerators. However, the energy gain in a single-stage LPA can be limited by laser diffraction, dephasing, electron-beam loading and laser-energy depletion. The problem of laser diffraction can be addressed by using laser-pulse guiding and preformed plasma waveguides...
Multistage coupling of independent laser-plasma accelerators
Laser-plasma accelerators (LPAs) are capable of accelerating charged particles to very high energies in very compact structures. In theory, therefore, they offer advantages over conventional, large-scale particle accelerators. However, the energy gain in a single-stage LPA can be limited by laser diffraction, dephasing, electron-beam loading and laser-energy depletion. The problem of laser diffraction can be addressed by using laser-pulse guiding and preformed plasma waveguides...
On-demand valet service Zirx sued over workers’ independent contractor classification
A former Zirx worker says she was required to work set hours and wear a uniform when she parked cars for the on-demand valet company — but she was never considered an employee. Instead, Christina Pascual alleges in a proposed class action lawsuit that Zirx misclassified her as an independent contractor who — like many victims of the sharing economy —...