LYCOS RETRIEVER 
Filters
built 653 days ago
External pond Filters are generally the largest of pond filters, and are located above ground (some may be partially buried) somewhere near the pond itself. Water from the pump’s output enters the top of the filter, trickles through the filter media, then drains out the bottom port. External filters may be operated with a variety of media, but generally use large sheets of foam for mechanical filtration with several gallons of plastic or porous stone biological media underneath. Many operate on the “wet/dry” principle used on high-tech saltwater “reef” aquariums, in which the biomedia has water continuously running over it but is not submerged. Advantages: improve water quality; may go days to weeks or even months between cleaning; most efficient form of biological filtration supports greatest fish load; optional filter media may be added for special purposes; above ground installation makes unit easy to clean. Disadvantages: large size and need to be above water level make them difficult to hide; water leaving filter must drain freely into pond and may not be used for fountain or waterfall. Things to Look For: internal bypass that allows water to continue to flow if filter clogs; large surface area; room for several different media.
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Filters run in the index helper process. A new instance of a filter is created for every file to be indexed. Performance can be improved by declaring constant data like lookup tables as static variables. Several more suggestions are included in [1].
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Earlier this year, the Company announced that it had received orders totaling over $1.9 million for DWDM filters from several customers. By June 30th, filter sales in fulfillment of these orders amounted to approximately $300,000 leaving an open order of approximately $1.6 million. Production of these remaining filters has been on hold while the Company has been working together with the customer to refine the specifications to satisfy the customer's latest requirements. The Company has now been notified that it has satisfied all current technical requirements of this customer.
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Filters are applied to HTML controls through the filter property. The filter property is a string of filter descriptions that uses a function-like notation, but you do not need to know script to implement this property. The following syntax shows an Internet Explorer 5.5 filter declaration in a STYLE attribute.
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Designed with comprehensive security features, SCOoffice Server 4.1 stops e-mail viruses, filters junk e-mail, and secures e-mail access. SCOoffice Server ... delivers a real-time collaboration solution for scheduling group meetings, sharing contact lists and folders, and managing group task lists. SCOoffice Server connects customers, suppliers and partners through popular e-mail clients, like Microsoft Outlook(R), Qualcomm(R) Eudora(TM) and Netscape(R). A complete WebClient enables mobile workers and telecommuters to access their e-mail from anywhere there is an Internet connection and a browser.
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The plot below shows the transmission characteristics of a number of "UV filters". There are 3 "generic" type filters, a Millennium (marked "made in Japan"), a second Millennium (this one marked "made in China") and a Promaster, plus 3 "name brand" filters, a Tiffen UV protector, A Hoya UV filter and a B+W UV filter. As you can see from the plot, the 3 "generics" along with the Tiffen UV protector really did not cut any appreciable UV down to 350nm. The Hoya and B+W filters showed definite UV absorption, the Hoya being more effective at UV blocking.
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Filters