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Tuberculosis (TB) infects one third of the world’s population, and new infections occur at a rate of 1/s. Better vaccines are needed than the live mycobacterium Bacille Calmette-Guérin (BCG). Alveolar macrophages (AMΦs) play a central role in pulmonary manifestations of TB. Targeting immunomodulators to AMΦs, the first line of defense against Mycobacterium tuberculosis (Mtb), may initiate a potent...
The 3D standard k - ?? model coupled with the volume of fluid (VOF) method of water-air two-phase flow is established in long-distance diversion tunnel with free flow. The method of wall functions which considers the roughness of the walls is utilized near the walls, and the method of pressure-implicit with splitting of operators (PISO) is applied to solve the unsteady water-air two-phase flow field...
The 3D standard k-epsiv model of water-air two-phase flow coupled with volume of fluid (VOF) method is established in long-distance diversion tunnel with free flow. Considering the wall roughness, the method of wall functions is adopted near the walls. The results show that the disturbance zone of water flow appears at the inlet. The mutation zone of water flow and air flow vortex appear at the outlet...
The neutral-point (NP) potential of the three-level neutral-point-clamped converters is needed to maintain balanced. Zero-sequence voltage is the only freedom degree when carrier-based PWM is utilized. Appropriate zero-sequence voltage should be identified to control the NP potential. The relationship between the neutral current and injected zero- sequence voltage is studied comprehensively, and a...
In this paper, the torque ripples in low speed range of conventional direct torque control are analysed, and the strategy of predictive control of torque and/or stator flux is presented. A new vector selection table based on area voltage is proposed to control the torque and flux. In this case, two predictive control schemes are presented to reduce torque ripples and improve the steady and dynamic...
A 3 kb DNA fragment from the Streptomyces globisporus 1912 landomycin E (LaE) biosynthetic gene cluster (lnd) was completely sequenced. Three open reading frames were identified, lndGT4, lndZ4, and lndZ5, whose probable translation products resemble a glycosyltransferase, a reductase, and a hydroxylase, respectively. Studies of generated mutants from disruption and complementation experiments involving...
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