Stainless steel mesh

Microstrainers. Microstrainers are rotating steel screens with extremely fine stainless steel mesh (85—170 perforations per square centimeter (13—26/in. )). The flowing Hquid enters the open end of the dmm and passes through the mesh to the effluent end. The mesh traps soHd impurities and rotates with the dmm. A wash-water spray washes the trapped soHds into a hopper for final disposal. The mesh is washed with filtered effluent discharged from jets fitted into the dmm and then exposed to uv radiation to inhibit microbial growth. The mesh is washed with chlorine water at intervals of 7 to 28 days in order to control slime growth removal efficiencies are 30—55% of the appHed BOD and 40—60% of suspended soHds. 

Flame arrester of high-grade stainless-steel mesh... 

FIGURE 9.9 Small dumbbell-shaped sample of recombinant resilin prepared with embedded fine stainless steel mesh tabs (left) and being tested in phosphate-buffered saline (PBS) (right). 

We use gel content analysis to determine the weight fraction of a crosslinked polymer that is bound into an insoluble network. We immerse a stainless steel mesh basket containing a known weight of the crosslinked polymer in a suitable solvent (which may be heated to facilitate dissolution). If necessary, we can slice or grind the sample to increase its surface area. After 24 hours or more, we remove the basket from the solvent and dry it to constant weight. We calculate the gel content from Eq. 5.6. 

Scott et al. [33] designed a DMFC with stainless steel mesh as the anode FF plate that was able to remove the carbon dioxide gas effectively. Later, the same research group was able to demonstrate that using similar meshes as DLs in the anode side also improved the overall gas removal [26,34] (wet-proofed CFP was used as the DL on the cathode side). These meshes were used on the anode side and were made out of catalyzed Ti because similar meshes have been used extensively as catalyzed electrodes in other industries, such as the chlor-alkali industry [26]. 

Metal foams have been used in the past in the development of FF plates. However, Gamburzev and Appleby [53] used Ni foams as both a DL and a flow field plate with an MPL layer on one of its surfaces. They observed that such a design had high contact resistance between the nickel foam and the MPL and also increased gas diffusion resistance due to the required MPL thickness. Arisetty, Prasad, and Advani [54] were able to demonstrate that these materials can also be used as potential anode diffusion layers in DMFCs (see Figure 4.10). In fact, the nickel foam used in this study performed better than a carbon cloth (Avcarb 1071HCB) and a stainless steel mesh. However, it was recognized that a major drawback for these foams is their susceptibility to corrosion. 

K. Scott, P. Argyropoulos, P. Yiarmopoulos, and W. M. Taama. Electrochemical and gas evolution characteristics of direct methanol fuel cells with stainless steel mesh flow beds. Journal of Applied Electrochemistry 31 (2001) 823-832. 

Industrially, the silver is recovered from either the wash water, or the bleach fix separately or from a mixture of the two using electrolysis employing a stainless steel cathode cylinder and an anode of stainless steel mesh. A typical wash solution composition contains silver (4 g L ), sodium thiosulphate (220 g L ), sodium bisulphite (22 g L ) and sodium ferric EDTA (4 g L ). At Coventry we have used a scaled down version of the industrial process employing 250 mL samples [46]. Electrolysis experiments were performed at ambient temperature with both wash and bleach fix solutions and in which the potential applied to the cathode and the speed of rotation of the cathode were varied. The sonic energy (30 W) was supplied by a 38 kHz bath. The results are given in Tab. 6.9. The table shows that the recovery of silver on sonication of the wash or bleach fix solutions is much improved especially if the electrode is rotated while ultrasound is applied. Yields with bleach fix (which contains ferric ions) are less since Fe and Ag compete for discharge (Eqs. 6.13 and 6.14). 

Disaggregate spleens or nodes by forcing through a fine stainless-steel mesh (e.g., tea strainer) into 10 mL of serum-free DMEM using a spoon-head spatula (dipped into ethanol and flamed to sterilize it). 

To ensure optimal sample distribution and low dead volume, much attention has been paid to frits that close the tubing stainless steel mesh performs better than conventional frits. 

TNT from Amatol The TNT is extracted with boiling w thru a stainless steel mesh thus removing dirt and metal impurities. After the molten TNT settles it is drawn off and rewashed with boiling w under agitation four times in a similar fashion. The TNT is then pptd in cold w or run directly into graining kettles for immediate reuse 9... 

For the collection of monolayers, the microbubble surfactant mixture was spread (see above) and compressed to at least 24 dyne/cm. Thereafter, a rectangular piece of stainless steel mesh (4 cm x 1 cm, 30 mesh) was introduced vertically through the surface of the subphase, by means of a small handle, and alternately raised and lowered so that the air/water interface remained within the area of the mesh. This slow, vertical oscillation was coupled with a horizontal movement of the mesh along the surface of the subphase. The procedure resulted in a continual drop in the measured surface pressure (see above) as monolayer material gradually accumulated over the surface of the mesh. The surfactant-coated mesh was then transferred to and shaken in a glass vial containing high-purity ethanol. Once rinsed, the... 

A diffusive end cap which contains a stainless steel mesh screen can also be used and this can prevent air movement within the diffusive air gap when exposed to high air velocities (Brown, 1993). Evaluation of the sampler for workplace monitoring found that the diffusive uptake rate of the sampler was not influenced by air velocities as low as 0.007ms-1. 

The EHCF copolymers studied showed zero-order release kinetics in this simplified procedure and showed identical release profiles as in our earlier study (1 ) using the more complex dialysis membrane/ stainless steel mesh basket technique. The actual 5-FU release rates increased in the co-monomer order HHA>HA>BA. Within a given set of copolymers, the release rate for 5-FU increased as the EHCF content increased. 

Na/S cell There are various cell designs and details can be found elsewhere [7]. The principle of operation is illustrated in Fig. 4.28 and a schematic of one design of cell shown in Fig. 4.34. The cell contains just the amount of sodium for it all to be combined with the sulphur for complete discharge. The small space between the stainless steel liner and the electrolyte contains a fine stainless steel mesh which, by capillarity, can raise the height of the liquid sodium which enters the gap through the small hole at the bottom of the liner. The sodium can be pulled to a height of at least 200 mm at 300 °C. 

US Patent 6,183,542 was issued in 2001 for a palladium membrane process. This process provides an apparatus that can handle high flow rates of gas, per unit area of membrane, while using a minimal amount of hydrogen-permeable material. This is accomplished by using stainless steel mesh elements to reinforce the thin-walled, palladium or palladium alloy membranes. This process also provides the ability to withstand large pressure gradients in opposite directions and thus will make it easier to clean membranes that have been clogged with contaminants. 

We reported that an airlift column reactor was superior for the cultivation of hairy roots, in which reticulate polyurethane foam was used as an appropriate support for the even growth and distribution of the hairy roots [44]. A turbine-blade reactor was developed by Nagai et al. [45], in which the cultivation space is separated from the agitation space by a cylindrical stainless-steel mesh and a stainless-steel plate with a slit so that hairy roots do not come into contact with the impeller. The impeller, with 8 turbine blades, is fitted in the agitation space at the bottom of the reactor. The medium flows upwards along the vessel wall, passes through the cylindrical stainless-steel mesh in the center of the re-... 

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