The Invention Provides N,N'-Disubstituted Monothiourea Or Bis-Thiourea-Pd(0) Complexes That Are Useful As Catalysts For Palladium-Catalyzed Heck Reaction Of Aryl Iodides And Bromides With Olefins, And As Catalysts For Palladium Catalyzed Suzuki Reactions Of Organoboric Compounds And Aryl Halides.
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Method of data request scheduling in peer-to-peer sharing networks
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Disclosed is a stem cell sheet for tissue repair and in vitro tissue engineering. The stem cell sheet comprises treated stem cells embedded in their self-secreted extracellular matrix (ECM) and formed an elastic cell sheet. The stem cell sheet is formed by isolating the stem cells, expanding the s.....
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In conventional metallic waveguides, the transverse dimension of the waveguide determines the cut-off frequency for the transmission of electromagnetic (EM) waves. This means the larger the transverse dimension of the waveguide, the longer the wavelength of the guided waves. Hence, it may not be pra.....
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A monitor system for drilling well is composed of three pressure sensors respectively for the impact, push force and torque of drill bit and a position sensor for the depth of drill bit. Said system can monitor 4 signal output from said 4 sensors and generate relative curve diagram.
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