Portals

Artacho E, Sanchez-Portal D, Orde]6on P, Garcia A and Soler J M 1999 Linear-scaling ah initio calculations for large and complex systems Phys. Status Soiidi B 215 809... 

Recapitulating, large search engines are useful to obtain a fast ovemew of search terms. To get more detailed information one has to enter qualified, specialised portals or even utilize databases (see above). 

If users are inexperienced in searching for information, they should first consult search engines, meta-databases or portals (Table 5-6). Searchers who are familiar with databases may consult known databases (numeric databases, bibliographic databases, etc.) directly, being aware that they might miss new data sources (see Section 5.18). The reliability and quality of data are only given in peer-reviewed data sources. 

Table 5-6. Free-of-charge search engines, inetadatabases, and (chemical) portals.

Ch.cmHiiidcr.Com, a portal of free and subsciiption scientific databases htrp //chem/ nder.cambridgcsojl.com/... 

The word portal is often used for web sites that function as an entiy to a repo-sitoiy of information on almost any topic on the Internet. The following portal categories for chemical issues arc distinguished general chemistry sites substance information sites analytical chemistiy sites enviromnental chemistry sites toxicology and occupational health sites as well as patent seiwices [47],... 

Figure 5-31. Search for atrazine and daphnia toxicity in the Cennan Environmeiital Information NetworkGEIN portal (excerpt from search, October 21, 2002) http //wu u. geln.de/incfex en.htm ).

SCISEARCH Institute of Scientific Information, Thomson Scientific science and technology bibho. citations 20mio records 5900 journals ISI Web of Science, DIALOG, ORBIT, DIMDI, Da-taStai, STN CD-ROM, online weekly www.isinet.com http //isi2.isi-knowkdge.-com/portal.cgi... 

The hulls are the first material removed from the process to merit concern in respect to safeguards. These represent a possible route for special nuclear material (SNM) to be clandestinely removed from the system. Special instmmentation is used to assay the hulls containers for residual SNM. This step not only monitors the dissolver for proper functioning, but also serves an accountancy function as a material access area portal and enables the satisfaction of contractual requirements regarding process losses (40). 

Food vitamin B 2 appears to bind to a saUvary transport protein referred to as the R-protein, R-binder, or haptocorrin. In the stomach, R-protein and the intrinsic factor competitively bind the vitamin. Release from the R-protein occurs in the small intestine by the action of pancreatic proteases, leading to specific binding to the intrinsic factor. The resultant complex is transported to the ileum where it is bound to a cell surface receptor and enters the intestinal cell. The vitamin is then freed from the intrinsic factor and bound to transcobalamin II in the enterocyte. The resulting complex enters the portal circulation. 

Gastrointestinal Tract. The gastrointestinal (Gl) tract is the most familiar and widely used portal for dmg dehvery, largely because of the ease with which medications can be administered. 

Stoma.ch, Sma.IIIntestine, and Colon. These organs provide accessible portals for local dehvery of therapeutic agents, including laxatives. 

They also are important portals for systemic therapy. However, many variables can influence dmg dissolution and absorption ia these areas, including rate of gastric emptying, intestinal motility, mass and pH of intestinal contents, and condition of the absorbiag surfaces (15—17). These variables, ia turn, can be affected by the patient s disease, posture, and eating habits, and even by such aspects of the treatment as the timing of doses (11). 

Ionics Incorporated (Watertown, Massachusetts), the leading ED suppHer, has sold more than 2000 ED and EDR plants having a combined capacity of probably more than 600,000 mr / d. These were originally furnished with probably more than 1.2 x 10 of membrane. More than 2000 other ED and EDR plants have been built and installed in China. These plants have a combined capacity of more than 600,000 mr / d and were originally furnished with probably more than 1.2 x 10 of membrane. Also it is estimated that more than 1000 ED and EDR plants have been built and installed in the CIS. These plants have a combined capacity of probably more than 300,000 m /d, probably originally furnished with more than 600,000 m of membrane. Roughly 100 plants have been installed by other companies such as Corning Erance (formerly S.R.T.I.) and Portals Water Treatment Ltd. (formerly Permutit-Boby). 

Specification for electrically driven jib cranes mounted on a high pedestal or portal carriage... 

Portal The point at which something enters the body in the airway, the... 

FIGURE 5.38 Pictorial presentation of the microscopic structure of the liver. The picture shows the classical liver lobulus. The functional acinus and its three zones are at the left. The acinal zones are marked by numbering them 1-3. These zones correspond to the direction of blood flow from the portal arteries (PA) to the terminal veins (TV). Zone I corresponds to the periportal area in classical liver pathology, zone 2, the interlobular region (midzone), and zone 3, centrelobular region. ... 

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