Anti-TBCC monoclonal antibody, clone 2C3

A summary is presented of research progress in the design and technology of hypersonic air intakes and variable-geometry turbine based combined cycle (TBCC) intakes. Development of hypersonic intakes has passed through three geometry variations: 1) intakes with Prandtl-Meyer flow, terminating at planarly symmetric flat, oblique shocks and bounded by sidewalls, 2) the novel modular wavecatcher intakes, based on axial flow; 3) diverterless supersonic intakes, integrated with a bump surface to displace the boundary layer. We describe development of the design method of the axisymmetric wavecatcher intake, covering the direct streamline tracing technique and methods of intake flowpath morphing. We characterize intakes on the basis of the flow-related, meaningful concepts of turning, convergence and deflection to distinguish the different fundamental and characterizing flows that form an intake flowpath. These concepts closely relate to intake capability and efficiency and so can be identified and ascribed as contributing factors to performance. Still-outstanding design challenges are highlighted. Development of the variable-geometry TBCC intake is reviewed. Classified by spatial layout, the TBCC intake includes tandem and parallel (over/under) flow paths that can be divided further into internal and external over/under TBCC intakes. The virtues and critical technologies of various variable-geometry TBCC intakes are reviewed and summarized and the capabilities of the over/under TBCC with an axial-flow-based wavecatcher intake are highlighted.

Cotton fabric was bleached at a pilot-plant scale with the activated peroxide system based on N-[4-(triethylammoniomethyl) benzoyl] caprolactam chloride (TBCC). The performance of the TBCC-activated peroxide system on low-temperature bleaching of cotton fabric was evaluated by measuring the degree of whiteness, degree of polymerization, water absorbency, extractable contents, and dyeing properties of bleached cotton fabrics. For comparison purpose, cotton fabric was also bleached at the same pilot-plant scale with a traditional hydrogen peroxide system using a standard recipe. It was found that the pilot-plant bleaching with the TBCC-activated peroxide system resulted in a comparable degree of whiteness and a slightly lower water absorbency of cotton fabric but no apparent fiber damage. The bleached cotton fabric could meet requirements for trichromatic reactive dyeing. The investigation on resource utilization revealed that the pilot-plant bleaching of cotton fabric with the TBCC-activated peroxide system could save 60% water, 38% steam and 27% electric power in comparison with the traditional hydrogen peroxide system. These pilot-plant results are of great importance for further scaling up the TBCC-activated peroxide system to full-scale commercial production.