Strip grounding

Cinnamomum cassia B/um (Lauraceae) is the so-caUed cassia. It is native to southeastern China and has not been grown successfuUy outside of this area. The dried bark of this evergreen tree is stripped, ground, and sold almost exclusively in China. The leaves and twigs of the tree contain the same flavor components as the bark and are steam distUled to yield the cassia oil of commerce. Infrequently, smaU amounts of bark are bundled and exported as cassia lignea but caimot compete with the other varieties as bark spice. The Chinese prefer to seU the essential oil. 

A pipe or strip grounding is more effective than a plate grounding. 

For extended anodes or strip grounds, 4t / so that the formula in line 9 in Table 24-1 becomes ... 

PROP Extracted from the red algae Rhodopyceae. Unground in thin, translucent, membranous strips ground pale buff powder, Sol in boiling water insol in cold water and org solvs. 

For a strip ground it follows from Eq. (24-21) with t-0 and d / in half space ... 

Urena and Abutilon. These are less important vegetable fibers of a jute-like nature. Urena lobata (Cadillo) of the mallow family (Malvaceae) is a perennial that grows in Zaire and Brazil to a height of 4—5 m with stems 10—18 mm in diameter. Because of a lignified base, the stems are cut 20 cm above the ground. The plants are defoflated in the field and retted similarly to jute and kenaf. The retted material is stripped and washed and, in some cases. 

U.S. EPA, "Case Study of Ground Water Extraction with Air Stripping, Des Moines TCE Site," in Innovative Operational Treatment Technologiesfor Application to Supefund Sites Nine Case Studies, prepared by T. Pheiffer, U.S. Environmental Protection Agency, Washington, D.C., 1990. 

Volatile organic contaminants occur primarily in groundwaters as a result of the disposal of industrial solvents on the ground or in soakage pits. The removal of these compounds has best been accompHshed by the use of air stripping or adsorption on activated carbon. 

Barium carbonate of finely controlled particle size reacts in the soHd state when heated with iron oxide to form barium ferrites. Magnetically aligned barium ferrite [11138-11-7] powder can be pressed and sintered into a hard-core permanent magnet which is used in many types of small motors. Alternatively, ground up magnetic powder can be compounded into plastic strips which are used in a variety of appHances as part of the closure mechanism. 

The minimum cross-sectional area of the strip or the rod should be chosen according to the ground fault current and its duration (Section 22.4.1 and equation (22.4)). The minimum area of cross-section is recommended as... 

As discussed in Section 29.2.5, jointing of two different metals (copper being one) causes electrolysis at the joints, leading to corrosion and failure of the joint. To avoid this, it is recommended that the same procedure be adopted as discussed in Section 29.2, and where the electrode and the connecting ground strip are of the same metal, that the joints are riveted or welded with the same metal after making the surface. Soldering is not recommended. 

Attached anodes provide the particular advantage of proportionately low grounding resistance for the protection current because the actual anode body is set into both sloping sides of the plastic body as long narrow strips. The disadvantage is that the body is exposed on the ship s side and can easily be damaged mechanically. 

The technique of trituration is frequently useful. The organic product is stripped of solvent and the oily residue is placed in a mortar and covered with a layer of a solvent in which it is only slightly soluble. The mass is ground with a pestle mixing in the solvent as thoroughly as possible. In favorable cases, the solvent removes traces of impurities that may be inhibiting crystallization, and grinding action induces crystallization. 

The connection to earth can be made utilizing earth rods, earth plates, earth lattices or grids, or buried strip conductors. Selection depends on the locality and type of ground conditions at the site. The effectiveness of the earth connection is, in turn, dependent on the resistivity of the soil at the site, the type of soil and climatic conditions have a direct effect upon the resistance of the connection made. Typical values of resistivity — m) for different types of soil are ... 

---