Cracks and crevices

True Density or Specific Gravity. The average mass per unit volume of the individual particles is called the tme density or specific gravity. This property is most important when volume or mass of the filled composition is a key performance variable. The tme density of fillers composed of relatively large, nonporous, spherical particles is usually determined by a simple Hquid displacement method. Finely divided, porous, or irregular fillers should be measured using a gas pycnometer to assure that all pores, cracks, and crevices are penetrated. 

Radon gas is formed in the process of radioactive decay of uranium. The distribution of naturally occurring radon follows the distribution of uranium in geological formations. Elevated levels have been observed in certain granite-type minerals. Residences built in these areas have the potential for elevated indoor concentrations of radon from radon gas entering through cracks and crevices and from outgassing from well water. 

Clean up all spillages immediately and check for pockets (e.g. in cracks and crevices) by monitoring Decontaminate equipment such as vacuum pumps and glassware prior to service/maintenance... 

Cracks and crevices where explosives particles may lodge should be omitted. 

FLEAS—In flea-infested rooms, spray floor cracks and crevices thoroughly. Do likewise with cat and dog cushions, rugs, kennels, etc. 

A nonchemical factor also influences a sand fly s selection of egg sites She prefers narrow cracks and crevices rather than open surfaces. A gravid sand fly, then, is quite exacting about where she deposits her eggs. She avoids exposed areas and looks for a site that already contains eggs of her own species along with simple organic nutrients. Her concerns seem well placed, for these characteristics promise safety, protection from the elements, and food for newly hatched larvae. 

Hellmuth believes that the polymeric material forms. If magnesium acetate is simply the internally chelated material, then it should be quickly washed away. The combination of calcium and magnesium acetates is known as CMA. CMA is more expensive than sodium chloride or calcium chloride, but it does not damage plant life and it has a much longer effective life. The polymer seeks the cracks and crevices in and around the pavement and remains until needed again to lower the freezing point of water. Often, one application of CMA is sufficient for a winter season. 

Mercury is a nonwetting liquid that must be forced to enter a pore by application of external pressure. The surface tension of mercury causes mercury to bridge the openings of pores, cracks, and crevices until sufficient pressure is applied to force entry. For example, at atmospheric pressure, mercury will resist entering... 

Sixth, one may have the feeling of being oppressed or crushed or squeezed into cracks and crevices amidst rocks and boulders. Or the person may feel that a kind of metallic net or cage may encompass him. This symbolizes the attempt prematurely to enter an ego-robot which is unfitting or unequipped to deal with the expanded consciousness. Therefore one should relax the panicky desire to regain an ego. 

NEVER FROST A WARM CAKE or cupcake The frostingwill melt, disappear into the cracks and crevices of your cake, and not set properly. 

Analysis of this problem shows that, indeed, inhibitors behave as though they are adsorbed upon the basic bare metal beneath any oxide or carbonate film. There is, however, evidence for films (which, wherever they exist would be protective), so that the actual inhibitor action is on bare metals formed in cracks and crevices between the zones of protective oxides and carbonates. 

Many models exist to predict the conditions within these sites (e.g., 34,35). However, if the primary need is to determine the extent of corrosion damage (e.g., the depth of corrosion penetration), these models are not sufficient. Generally, electrochemical techniques contain no spatial information, since the current measured is the sum of currents from all individual corrosion sites. In the case of pitting, this limitation is being slowly erased as scanning techniques capable of spatial resolution are being developed. However, the ability to resolve local corrosion sites within fixed occluded areas such as cracks and crevices remains minimal. 

US Environmental Protection Agency (E.P.A.). In all cases, apartment complexes were selected that harbored a sizable population of Blattella germanica and in which full cooperation of owner and tenants for a lengthy treatment and observation schedule could be secured. Uniform treatments were applied in all units of a complex (4-6 units). The treatments were generally 0.6 % or 1.2Z hydroprene total release aerosol foggers, often combined with simultaneous spray treatment of cracks and crevices with a conventional insecticide. 

The oldest loess-like sediments referable to the Lower Pleistocene have been found in Hungary at locality no. 5 at Vill ny, locality no. 4 imbedded in the freshwater limestone of Dunaalmds and locality no. 2 at Somssich Hill. These rocks, however, cannot be considered as typical loess because originally they were situated in cracks and crevices or deposited on freshwater limestone. They thus show a somewhat intermediate character, similar to cave loess. Similarly, we may refer the Lower Pleistocene material of the yellow layers of locality no. 8 at Villany to cave loesses (Kretzoi, 1956), in which the fauna elements indicate a cool, dry environment at the time of deposition. 

Pesticides may be periodically inttoduced into indoor air by direct application (e.g. insect sprays and bombs, disinfectant sprays and room deodorizers). In addition, there are often sources that continually emit vapors into the living space (e.g. continuous evaporation of residues from crack and crevice treatments and emissions from pest-control strips or other devices). Whether used inside the home or office, or outside on the lawn or garden, pesticides accumulate on indoor surfaces, especially in carpet dust, and also in upholstery and in or on children s toys (Lewis et al 1994b, 1999 Simcox et al., 1995 Nishioka et al 1996, 1999 Gurunathan et al., 1998). 

The dislodgeability of a pesticide residue may depend on the condition of the surface. For example, new carpets are typically more stain-resistant and have more uniform piles, and thus they may behave differently than soiled and worn carpets. The presence of excessive moisture levels in carpeting, as may be the case shortly after a wet cleaning operation, may also affect the dislodgeability of residues, possibly yielding higher than normal results. Wax on vinyl and hardwood floors may affect dislodgeability, as may pits, cracks and crevices in the surface. 

---