Carrier permitted

On the other hand, the low concentration of a radionuclide provides opportunities for use as tracer in chemical and physical studies. In radioanalytical chemistry, one benefit is that the addition of a stable-element carrier permits analysis without the requirement of quantitative analyte recovery. Another benefit is the opportunity to deposit very thin sources that minimize self-absorption in a source of alpha-and beta-particle radiation. 

Prodrug or drug carrier permits traversing blood brain barrier... 

Before a motor carrier permits a multiple-employer driver to drive a commercial motor vehicle, the motor carrier must obtain the driver s name, social security number, and the identification number, type, and issuing state of the driver s commercial motor vehicle operator s license. 

Guidance Yes. Carriers are liable for the actions of their employees. Neither intent to commit, nor actual knowledge of, a violation is a necessary element of that liability. Carriers permit violations of the hours of service regulations by their employees if they fail to have in place management systems that effectively prevent such violations. 

Studies with inhibitors of specific electron carriers, and with artificial substrates that oxidize or reduce one specific carrier, permit dissection of the electron transport chain into four complexes of electron carriers ... 

Figures 8 and 9 show the sequential arrangement of the respiratory carriers. These carriers have prosthetic groups that can be reversibly oxklized and reduced by gaining or loosing electrons and have redox potential increasing from — 0 35 to -I- 0-81 V. The net drop of about 1 1 V corresponds to a total drop in free energy of about 52,000 cals. (Fig. 9). The arrangement of the respiratory carriers permits a stepwise liberation of this energy, which can then easily be trapped and conserved.

Initiators. The degree of polymerization is controlled by the addition rate of initiator(s). Initiators (qv) are chosen primarily on the basis of half-life, the time required for one-half of the initiator to decay at a specified temperature. In general, initiators of longer half-Hves are chosen as the desired reaction temperature increases they must be well dispersed in the reactor prior to the time any substantial reaction takes place. When choosing an initiator, several factors must be considered. For the autoclave reactor, these factors include the time permitted for completion of reaction in each zone, how well the reactor is stirred, the desired reaction temperature, initiator solubiUty in the carrier, and the cost of initiator in terms of active oxygen content. For the tubular reactors, an additional factor to take into account is the position of the peak temperature along the length of the tube (9). 

The variatioa of average pipeline coastmctioa costs with increasing size of line pipe is showa ia Figure 2, based oa data takea from FERC coastmctioa permit appHcatioas from July 1991 to July 1992. The cost of a common carrier pipeline project must be reported to the FERC ao later than six months after successful hydrostatic testing. 

In pack cementation, the part to be coated is placed in a retort and surrounded with a powdered pack consisting of the coating component and an activator the latter reacts with the coating component to form the carrier vapor, usually a haHde or an inert diluent, to prevent the pack from sintering together and to permit vapor transport of the alloying component through the pack. 

Pesticides. Many pesticides are highly concentrated and are in a physical form requiring further treatment to permit effective appHcation. Typically carriers or diluents are used (see Insectcontroltechnology). Although these materials are usually considered inert, they have a vital bearing on the potency and efficiency of the dust or spray because the carrier may consist of up to 99% of the final formulation. The physical properties of the carrier or diluent are of great importance in the uniform dispersion, the retention of pesticide by the plant, and in the preservation of the toxicity of the pesticide. The carrier must not, for example, serve as a catalyst for any reaction of the pesticide that would alter its potency. 

Conveyor installations maybe permanent or a combination of permanent and portable. The latter kind is often mounted on a bulk-deliveiy vehicle, which permits fast unloading into the customers silo by the carrier without effort or equipment from the customer. Controls range from simple motor starters and hand-connected hoses to sophisticated, microprocessor-elec tropueumatic control systems. 

Carrier relaying permits high-speed clearing of faults,... 

All of the transport systems examined thus far are relatively large proteins. Several small molecule toxins produced by microorganisms facilitate ion transport across membranes. Due to their relative simplicity, these molecules, the lonophore antibiotics, represent paradigms of the mobile carrier and pore or charmel models for membrane transport. Mobile carriers are molecules that form complexes with particular ions and diffuse freely across a lipid membrane (Figure 10.38). Pores or channels, on the other hand, adopt a fixed orientation in a membrane, creating a hole that permits the transmembrane movement of ions. These pores or channels may be formed from monomeric or (more often) multimeric structures in the membrane. 

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