Knitted tube

Figure 5 Schematic diagrams of reactors used in FIA in order of increasing dispersion (a) single bed string reactor, (b) knitted tube, (c) coiled tube, (d) straight tube, and (e) external mixing chamber with stirring.

Figures 18.1 and 18.3 the amino acids were transformed into coloured products by means of ninhydrine added after the column. The reaction took place in a knitted tube reactor within 2 min at 130 °C.

Figure 2.10. Dispersion of a dye, injected as a sample zone (Sy = 25 jiL) into A, straight tube By coiled tube C, knitted tube and D, a SBSR reactor. The reactor volumes (Vr = 160 iL) and pumping rates (Q = 0.75 mL/min) were identical in all experiments. The same piece of Microline tubing (L = 80 cm, 0.5 mm inside diameter) was used in experiments Ay By and C. (The injected dye was bromthymol blue, carrier stream 0.1 M borax and wavelength 620 nm, cf. Chapter 6.) The SBSR reactor was made of 0.86 mm inside diameter tube filled with 0.6-mm glass beads. Note that the isodispersion points on the peaks were recorded with microreactors made of identical length and diameter, but different geometry.

Figure 3.11. Dispersion in straight, coiled, and knitted tubes as function of the linear flow velocity F (cm/s). Tube length is 10 m inside diameter is 0.56 mm. Shaded area covers flow velocities typical for FI A. (According to [3.13], by courtesy of the author.)...

A woven or knitted tube is slipped onto a smooth metal rod (stainless steel) of desired final graft diameter (expected to be smaller than the diameter of the tube as constructed) and is then wrapped with a suitable thread at a pre-determined pitch (Fig. 4.7b). The preferred method is to use a... 

The design of automotive seat covers by the usage of predictive computer models not only provide comfort and durability, but also assist in the quick change in the design and knitted tube size. It adds on quality, provides ergonomic seat design and time saving. 

Similar to a computerised flat knitting machine with two needle beds, a double-needle bar Raschel machine has two needle bars. It is possible to knit tubes of different sizes on such a machine with a set of fully threaded guide bars to knit two separate fabrics... 

Figure 3.12 MWNT yam structures, (a) Optical image of a CNT yam-knitted tube, (b) SEM image of a CNT yam/cotton yam co-knitted fabric, (c and d) Optical images of woven and...

Spandex Fibers. Spandex fibers are suppHed for processing into fabrics in four basic forms as outlined in Table 3. Bare yams are suppHed by the manufacturer on tubes or beams and can be processed on conventional textile equipment with the aid of special feed and tension devices. In covered yams, the spandex fibers are covered with one or two layers of an inelastic filament or staple yam the hard yam provides strength and rigidity at full extension, which faciUtates knitting and weaving. 

In the United States tubular knitted fabric is dyed by the pad-batch method for oudets where the edge mark formed as the double thickness tube passes through the padder is accepted. In Europe it is usual to sHt tubular knitted fabric before padding in order to avoid any edge marks. 

Scheme showing the positioning of a palladium electrode (a) and a woven (b) and knitted (c) textile electrode in the cell, and the influence on the configuration of the electrodes due to positioning. (1) Rubber fittings, (2) part of the PVC tubing filled with electrolyte and (3) electrolyte solution. 

O of Gly 457 and the side chain — O of Glu 459, which also links across to the NH2 of Arg 238, which in turn links to the —OH of Ser 236. The first and second phosphate groups (a and / ) of ATP are linked to the sequence Gly-Lys-Thr-Glu (residues 184-187). Clearly, in the crystal, the entire region of binding of the phosphate groups, in the so-called phosphate tube, represents a very tight-knit set of interactions. It is considered very... 

The first really successful artificial material used in the manufacture of synthetic blood vessels was Dacron , a polyester fiber made from polyethylene terephthalate (PET). The material is woven or knitted into thin tubes with dimensions similar to those of a natural blood vessel. The tubes are then treated with coagulated blood or with albumin, an important blood protein, to block the tiny holes in the fabric of which they are made. Over time, cells migrate into the blood or albumin trapped within the Dacron matrix and deposit collagen. As the blood or albumin degrades, it is replaced by the collagen, producing a vessel with some properties similar to those of natural blood vessels. 

FIGURE I Expanded-bed affinity chromatography (EBAC) setup Tl and T2, tanks for homogenate, washing, elution, and reequilibration buffers P, peristaltic pump C, expanded-bed column W, wastes collector E, eluent collector VI, V2, V3, and V4, three-way valves V5, four-way valve K, knitted silicone tubing used to reduce flow pulsation. 

In general, membrane-supported liquid-liquid extraction is offered as a micro-porous hollow fibre module (Fig. 2.23). The membrane contactor contains thousands of micro-porous hollow fibres knitted into an array that is wound around a distribution tube with a central baffle. The hollow fibres are arranged in a uniform open packing allowing the utilisation of the total membrane surface area. The liquid flows over the shellside (outside of the hollow fibre), is introduced through the distribution tube and moves radially across the array of hollow fibres and then around the baffle and is carried out by the collection tube. 

The singeing machine for circular knit fabric differs from the well-known singeing machine for woven fabrics only in guiding and transport of the fabric. The real problem consists in properly opening out the tubular fabric. The distance between burner and fabric must be exactly the same at every point. The burner must be so designed that there is an uniform flame intensity over the entire tube circumfer-... 

Another one is spiral jet bleaching unit in which the woven and knitted fabrics can be pre-treated as shown in Fig. 7-9. In this machine, the fabric is moved in a spiral, in rope form, through the tube, using Jets that lifted the fabric out of one compartment and deposited in the next [7-9]. 

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