A cantharimide compound may include the backbone of formula (1). R1, R2, R3, and R4 may be independently selected from the group consisting of H, C(O)OR5, C(O)R6, C(O)NR7R8, NR9C(O)R10, N—R11R12, O—R13, S—R14, P(O)(OR15)(OR16), As(O)(OR17)(OR18), SO2R19, SO3R20, and B(OR21). X1to X4 may be independe.....
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A novel recombinant Bacillus bacterial strain is constructed by genetic engineering which has high productivity of alpha-amylase. The Bacillus strain comprising an alpha-amylase gene inserted in the Bacillus chromosome under transcriptional control of a phage promoter. An efficient process for the r.....
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In recent years, lanthanum hydroxide (La (OH) 3) material has been widely applied in areas such as heterogeneous catalysis, materials, hydrogen storage materials, electrode materials, and superconducting materials. Its performance largely depends on particle size, aggregation, pore volume and surfac.....
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Embodiments of the present invention are directed to the detection of fetal or maternal RNA in a blood sample from a pregnant subject, and may involve subjecting the sample to a test for fetal or maternal analysis indicative of a fetal or maternal condition or characteristics. For instance, the RNA .....
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This invention involves a novel kind of SERS-active substrate, which is easy to manufacture and provides improved sensitivity and reproducibility. The SERS detections based on this kind of substrate have potential for wide applications in biology, chemistry, physics, and environmental science. For e.....
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