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 robot structural design is invented for surgical applications. Drilling and instrument insertion are common surgical procedures working on a spatial line. A robot with 7 joints (2 sliding joints and 5 revolute joints) is designed for various surgical applications. The large number of joints.....
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The system and the method modules the error signal output by the feedback or the ramp signal into the various signals dependent on the voltage at the two ends of the blocking capacitor. The said signals are supplied to the PWM controller, making the converter stable. The modulation eliminates the in.....
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According to a first aspect of the present invention, there is provided a method of making zeolite microneedles comprising a step of preparing polymer template for the needles by a photolithographic process, wherein a layer of photo-sensitive polymeric material is coated on a substrate e.g. silica, .....
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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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