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The OsH6(PPr3)2-mediated fragmentation of a 4-(2 pyridyl)-2-azedidinone has been achieved and its mechanism has been investigated by DFT calculations. The addition of the C4-H bond of the substrate to OsH2(PPr3)2 allows the active participation of an osmium lone pair in the B-type β-lactam fragmentation process. This new mechanism makes the N1-C4/C2-C3 fragmentation of the lactamic core thermal...
Websites are commonly used to expose data to end users, enabling search, filter, and download capabilities making it easier for users to find, organize and obtain data relevant to their own interests. With the continuous growth of data in the Life Sciences domain, it becomes difficult for users to easily find information required for their research on one single website. Search engines should m...
one of the limitations of orthogonal frequency division multiplexing (ofdm) in many applications is its sensitivity to frequency shifts, errors normally referred to as carrier frequency offset (cfo). although, this small offset is negligible in conventional single carrier communication systems, it is a severe problem in the ofdm systems. because, the carriers in ofdm are inherently closely spac...
were the clinical variables affecting survival. The histological variables related to survival were; mitotic count, necrosis, nuclear pleomorphism, vascular and lymphatic permeation and an undifferentiated growth pattern. All these features could be detected with routine histological stains, whereas immunocytochemical methods for demonstrating neuron specific enolase were of no help in assessin...
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