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Entry point

Placement of vascular access ports is similar to that of a long-term indwelling arterial catheter. A small incision is made over the selected vein and a second incision is made lower in the anterior chest to create a pocket to house the port. The catheter is tuimeled subcutaneously from its entry point into the vein with the tip inside the right atrium. The final position of the catheter is verified by fluoroscopy, secured with sutures, and the subcutaneous pocket is closed. The port septum is easily palpable transcutaneously, and the system may be used immediately. A surgeon typically inserts the vascular access port in an outpatient setting. [Pg.184]

You should set up a common entry point for such data and put in place an evaluation function to convey appropriate data to the manufacturing, engineering, and design activities. A corrective action form or improvement form could be used to convey the data and obtain a written response of the action to be taken. A log of servicing reports would assist in tracking servicing concerns and demonstrate you were making effective use of the data. [Pg.542]

TR14, TR15 = Column Temperature LIC3 = Level in Reflux Drum FIC8 = Reflux Flow FIl, FR15 = Crude Flow at Entry Point TRC8 = Crude Temperature at Entry Point. [Pg.182]

FIGURE 23.1 The pathways of gluconeogenesis and glycolysis. Species in blue, green, and peach-colored shaded boxes indicate other entry points for gluconeogenesis (in addition to pyruvate). [Pg.744]

Thermocouple entry points on about every other tray measure either liquid of vapor temperature. [Pg.219]

Continuous Anodes Consist of considerable lengths of relatively flexible copper-cored material which can be contoured to suit restricted spaces or to distribute current in a localised fashion. Typically they may be used in water boxes at a non-ferrous tubeplate/ferrous water box junction. Anode terminations pass through the water box via insulating entry points and the anodes are supported on insulators within the box. Anode/cathode distance must be such as to prevent the anode becoming engulfed in calcareous deposit that forms on the cathode. [Pg.218]

Figure 5.1 A simplified diagram of glycolysis and the tricarboxylic acid (TCA) cycle showing the entry points for various substrates. indicates the two reactions specific to the giyoxyiate cycle. Compounds in boxes are potential substrates for entry into the TCA cycle, via acetyl CoA. Figure 5.1 A simplified diagram of glycolysis and the tricarboxylic acid (TCA) cycle showing the entry points for various substrates. indicates the two reactions specific to the giyoxyiate cycle. Compounds in boxes are potential substrates for entry into the TCA cycle, via acetyl CoA.
In considering smaller steam-generating plants, a low-level (returning) condensate receiver also may double as a FW tank by providing the entry point for MU water. [Pg.70]

Where chelant corrosion does occur, attack may take place either at the chelant entry point or at several possible boiler surface locations. At the chelant entry point, rapid thinning of the metal takes place in the immediate vicinity. If the injection point has not been stress-relieved, the attack may be exaggerated and metal gouging may also occur. At the injection point, the available chelant is highly concentrated injection of product should be continuous through a type 304 injection quill (injection nozzle), with the chelant being rapidly dispersed into the body of steam-water. [Pg.264]

Boiler tube surfaces (especially at the entry points)... [Pg.264]

Where chelant corrosion does occur, attack may take place either at the chelant entry point (resulting in rapid thinning of the metal in the immediate vicinity) or at several possible boiler surface locations (resulting in thinning wastage and comet tails ). [Pg.436]

What has been reported in the previous subsections does not amount to an exhaustive review of the existing literature on MO calculations for sulphones and sulphoxides— which is, anyway, not particularly rich. It must be said that the treatment of the S—O bond poses special problems, and is therefore less attractive for the theoretical chemist. A search was nevertheless conducted, and what follows provides nearly all the existing entry points to the theoretical literature of sulphone and sulphoxide compounds. [Pg.28]

When a fluid flowing with a uniform velocity enters a pipe, a boundary layer forms at the walls and gradually thickens with distance from the entry point. Since the fluid in the boundary layer is retarded and the total flow remains constant, the fluid in the central stream is accelerated. At a certain distance from the inlet, the boundary layers, which have formed in contact with the walls, join at the axis of the pipe, and, from that point onwards, occupy the whole cross-section and consequently remain of a constant thickness. Fulty developed flow then exists. If the boundary layers are still streamline when fully developed flow commences, the flow in the pipe remains streamline. On the other hand, if the boundary layers are already turbulent, turbulent flow will persist, as shown in Figure 11.8. [Pg.681]

However, it will not always be possible to fix the cut line at the same value of 4) as the entry points, for the reason that the system does not enter the encirclement region at one unique value of ([). Up till now, we have assumed (see Section II.B) that the reaction is bimolecular, that it can only encircle the Cl when the nuclei are all close together, and that the reagents and products are... [Pg.13]

However, this accumulation has not been unequivocally proven. The recent identihcation of urobilinogenoidic linear tetrapyrroles in extracts from primary leaves of barley indicated that further degradation of the v-NCC 1 can take place. While the monoxygenation of pheophorbide a in the earlier phases of chlorophyll breakdown in higher plants appears to be a remarkably stringent entry point, the rather diverse structures of NCCs may indicate that the later phases of the detoxi-hcation process follow less strictly regulated pathways." ... [Pg.440]

Herrin RT, Lathrop RC, Gorski PR, Andren AW. 1998. Hypolimnetic methylmercury and its uptake by plankton during fall destratification a key entry point of mercury into lake food chains Linmol Oceanogr 43 1476-1486. [Pg.116]

We only consider static response properties in this chapter, which arise from fixed external field. Their dynamic counterparts describe the response to an oscillating electric field of electromagnetic radiation and are of great importance in the context of non-linear optics. As an entry point to the treatment of frequency-dependent electric response properties in the domain of time-dependent DFT we recommend the studies by van Gisbergen, Snijders, and Baerends, 1998a and 1998b. [Pg.193]

The key point to remember, in the merits of year-round radon removal, is that there is no guarantee that radon problems will not be present even in the summer months. The radon levels found in individual houses are a complex result of radon source strength, soil transport, the number, size, and location of entry points, weather, and the way the house is operated.2 To be certain of maintaining low radon levels in the house normally requires that an SSD mitigation system works properly 24 h per day, 365 days per year. It is for this reason that durability and system performance are very important considerations. The performance level goal for the system is 100% on-time operation for the life of the building. This requires excellent durability of system components and a reliable means for determining whether the system is fully operational at all times. [Pg.1261]

Weep holes are used to drain water from the block cores into the subslab area when surface waterproofing barriers fail. Such a connection between the exterior and interior subslab areas is an obvious channel for radon entry, allowing soil gas to pass from the subslab to the interior of the block wall. Openings from the subslab into the block wall would also make it difficult to apply active SSD at a later date. If the block tops are sealed and the interior of the block wall is sealed, then weep holes would be much less of a problem as radon entry points or as barriers to SSD. [Pg.1275]

The perimeter crack is located between the edge of the floor slab and the foundation wall. This applies to slabs in basements, crawlspaces, and slab-on-grade foundations. As a cold joint, this perimeter crack is always a potential radon entry point. Contractors building radon-resistant houses... [Pg.1278]


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See also in sourсe #XX -- [ Pg.331 ]




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