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CRISPR Plus SCNT Leads To Tuberculosis-Resistant Cows In China

CRISPR/Cas9 gene-editing technology, a way to generate very precise gene knock-out kits, has now been used to produce cows with resistance to bovine tuberculosis.Bovine TB, caused by Mycobacterium bovis, can be transmitted from livestock to humans, primarily if raw milk is consumed (just one reason to embrace post-1860 science about food, namely pa ....

Yong Zhang , Committee Tenth , Friends Of The Earth , Tenth Report , Single Cas , Genome Biology February , Genetics Amp Molecular Biology ,

Two-Facing "Janus" OPO Scheme for Generating High-Efficiency

New possibilities have paved the way for high-capacity optical communications and more effective evolution from a basic pump mode to a preferred parametric mode. ....

Yong Zhang , Dunzhao Wei , Laura Thomson , School Of Physics At Sun Yat Sen University , Sun Yat Sen University , Industry Focus , Advanced Photonics Nexus , Nanjing University , Study Corresponding Author , Associate Professor ,

Generation of color-tunable high-performance

As reported in Advanced Photonics Nexus, a team from Nanjing University and Sun Yat-Sen University recently developed a two-facing “Janus” optical parametric oscillator (OPO) scheme for generating high-efficiency, high-purity broadband Laguerre-Gaussian (LG) modes with tunable topological charge. The Janus resonator consists of two cavity mirrors, a periodically poled lithium niobate crystal, a Faraday rotator, a quarter wave plate, and a vector vortex wave plate. Different from previous intracavity mode conversion schemes based only on self-reproductions of the phase and polarization, the Janus OPO introduces an additional imaging system into the resonator to assist self-reproduction of complex wavefront, which greatly improves LG OPO performance. ....

Yong Zhang , Dunzhao Wei , School Of Physics At Sun Yat Sen University , Professor Of Physics At Nanjing University , Sun Yat Sen University , Advanced Photonics Nexus , Nanjing University , Associate Professor , Gold Open Access ,