Control exercise

Several striking examples demonstrating the atomically precise control exercised by the STM have been reported. A "quantum corral" of Fe atoms has been fabricated by placing 48 atoms in a circle on a flat Cu(lll) surface at 4K (Fig. 4) (94). Both STM (under ultrahigh vacuum) and atomic force microscopy (AFM, under ambient conditions) have been employed to fabricate nanoscale magnetic mounds of Fe, Co, Ni, and CoCr on metal and insulator substrates (95). The AFM has also been used to deposit organic material, such as octadecanethiol onto the surface of mica (96). New appHcations of this type of nanofabrication ate being reported at an ever-faster rate (97—99). [Pg.204]

The standard requires suppliers to define the type and extent of control exercised bp the supplier over subcontractors and goes on to require that these controls be dependent upon the type of product, the impact of the product on the quality of the final product, and, where applicable, on the quality audit reports and/or quality records of the previ-ousty demonstrated capability and performance of subcontractors. [Pg.320]

Subcontracts enable you to choose the degree of control exercised over your subcontractors. With suppliers, your choices are often limited as you have no privileges. Control over your suppliers is therefore exercised by the results of receipt inspection or subsequent inspections and tests. If your confidence in a supplier is low, you can increase the level of inspection and if high you can dispense with receipt inspection and rely on in-process controls to alert you to any deterioration in supplier performance. [Pg.322]

The standard requires that in determining the amount and nature of receiving inspection, consideration should be given to the control exercised at the subcontractor s premises and recorded evidence of conformance provided. The supplementary requirements require the supplier to use one or more of four prescribed methods unless waived bp the customer. [Pg.382]

In-process quality control is the control exercised over starting materials and intermediates. Its importance stems from the opportunities that it provides for the examination of a product at the stages in its manufacture at which testing is most likely to provide the most meaningful information. The WHO Requirements and national authorities stipulate many in-process controls but manufacturers often perform tests in excess of those stipulated, especially sterility tests (Chapter 23) as, by so doing, they obtain assurance that production is proceeding normally and that the final product is likely to be satisfactory. Examples of in-process control abound but three of different types should suffice. [Pg.312]

In addition to medical and surgical management, non-pharmacologic interventions that reduce risk factors for developing osteomyelitis should be communicated to the patient. Examples include smoking cessation, weight-control, exercise, and good nutrition.2 Additionally, a diabetic patient... [Pg.1183]

The reaction in its basic form is illustrated by the conversion of 274 into 275. This transformation shows the control exercised within the two biradicals A and B on the final outcome of the reaction151. Another typical di-jr-methane process, this time with electron-withdrawing substituents on one of the vinyl moieties, arises on acetophenone-sensitized irradiation of the diene 276. This yields the cyclopropane 277 in 35% yield. The... [Pg.298]

Consideration is given to the control exercised at the source and documented evidence of quality conformance provided. All incoming materials are inspected or otherwise verified as to conforming to specified requirements before being released for use to production. This verification is in accordance with the quality plan or documented procedures. All incoming materials released for urgent production purposes are positively identified and recorded in order to permit immediate recall in the event of nonconformance. [Pg.166]

Metabolic control analysis This produces a quantitative representation of the degree of flux control exercised by specific enzymes, metabolites, or effectors in the metabolic pathway. [Pg.450]

In the newborn baby and in some persons with transacted spinal cords, the defecation reflexes cause automatic emptying of the lower bowel without the normal control exercised through contraction of the external anal sphincter. [Pg.157]

The licensed manufacture of the final product has to institute controls that assure the FDA requirements are met. Although some manufacturers inspect their suppliers, generally, the control exercised is primarily a written agreement specifying that all FDA-required tests are performed, records are kept, separation is aseptically performed by the supplier before shipment, and so on. This agreement does not, however, release the... [Pg.613]

Sildenafil was the first oral treatment for ED and is the most extensively evaluated (35). Overall success rates in patients with cardiovascular disease of 80% or greater have been recorded with no evidence of tolerance, Patients with diabetes with or without additional risk factors, with their more complex, and extensive pathophysiology, have an average success rate of 60%. In randomized trials to date, open-label or outpatient monitoring studies the use of sildenafil is not associated with any excess risk of myocardial infarction, stroke, or mortality (38-40), In patients with stable angina pectoris there is no evidence of an ischemic effect due to coronary steal, and in one large, double-blind, placebo-controlled, exercise study sildenafil 100 mg increased exercise time and diminished ischemia (41), A study of the hemodynamic effects in men with severe CAD identified no adverse cardiovascular effects and a potentially beneficial effect on coronary blood flow reserve (42), Studies in patients with and without diabetes have demonstrated improved endothelial function acutely and after long-term oral dose administration, which may have implications beyond... [Pg.509]

There is a growing industrial demand for powders specially tailored for DRAM and FeRAM technologies. These are produced by chemical routes (see Section 3.4) with tight control exercised over composition. The general experimental approaches to forming thin films are summarized in Section 3.6.9 and in [25]. [Pg.332]

Epstein LH, Wing RR, Penner BC, Kress MJ Effect of diet and controlled exercise on weight loss in obese children. J Pediatr 107 358-361, 1985. [Pg.253]

One insect proved to be of special interest and was studied in greater detail (5-6). The redbanded leafroller moth (RBLR), Argyrotaenia velutinana, uses (Z)- and (E) -11—tetradecenyl acetates as pheromone components in the ratio of 9 1. The pheromone glands of these insects also contained the corresponding acids, All-tetradecenoic acids, but the Z to E ratio was about 4 5. If these acids serve as precursors to the acetates, there must be strict stereochemical control exercised in the reactions that produce the final product in the 9 1 ratio. [Pg.317]

O. N. Pitsunova, Civil Control Exercised in the Process of CW Destruction as a Guarantee of Safety , The Third Pubhc Hearings on Chemical Weapons Destruction, Kurgan region (1997). [Pg.147]

The thermochemistry of this system, discussed intermittently in what has come before, can be summarized here. Disproportionation is less favorable thermodynamically than recombination the equilibrium constant is 10 as compared to 10. Nonetheless, disproportionation can be made to be the more important reaction, even the nearly exclusive one, by virtue of the control exercised by the concentration of TMPD. The products of disproportionation, Mo and Mo-AN", do not react readily. The disproportionation products are "trapped" as such. In other words, the metal radicals are captured into an electron transfer cycle which prevents their falling to the most stable products, the dimer. The energetics of this system are depicted in Figtue 3. [Pg.211]

The range of substances over which there is pharmacopoeial control of particle size is shown in Table 1.7 sometimes the aim is to achieve uniformity in a product rather than any direct benefit. The control exercised over the particle size of cortisone acetate and griseofulvin is due to their very low solubility the experience is that if the solubility of a dmg substance is about 0.3% or less then the dissolution rate in vivo may be the rate-controlling step in absorption. [Pg.24]

Weight control, exercise, hygiene (including foot care), and not smoking are integral parts of the therapy. Protect skin, and limit sun exposure. [Pg.339]

The use of CRMs in the fields covered 15. by metrological control exercised by... [Pg.120]

The lack of evidence linking seizures of acetic anhydride to diversions directly from international trade, as well as the fact that very few suspicious shipments in international trade have been identified, raises concern over the controls exercised by... [Pg.17]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...