File Plachetka kal.jpg thumb right 250px A filter cake A filter cake is formed by the substances that are retained on a filter chemistry filter . The filter cake grows in the course of filtration , becomes thicker as particulate matter is being retained. With increasing layer thickness the flow resistance of the filter cake increases. After a certain time of use the filter cake has to be removed from the filter, e.g. by backflushing. If this is not accomplished, the filtration is disrupted because the flow resistance of the filter cake gets too high, thus too little of the mixture to be filtered can pass the filter cake and the filter plugs. The specifications of the filter cake dictate the filtration method of choice ref http www.bhs filtration.com technical Selection of Filtration.pdf ref References reflist DEFAULTSORT Filter Cake Category Filters Category Water treatment Category Water technology Hydrology stub de Filterkuchen uk ... more details
refimprove date September 2010 Halcones UV Xalapa is a basketball club based in Xalapa , Veracruz , Mexico that plays in the Liga Nacional de Baloncesto Profesional Liga Nacional de Baloncesto Profesional LNBP . Their home games are played at Gimnasio Universitario de la Unidad Deportiva. Former Michigan star and NBA player, Robert Traylor Robert Tractor Traylor , played for Halcones UV Xalapa 3 months before his death in May, 2011. External links http www.uv.mx halconesxalapa Official site DEFAULTSORT Halcones Uv Xalapa Category Basketball clubs established in 2003 Category Basketball teams in Mexico Category Sport in Veracruz Category Sport in Xalapa Mexico basketball team stub es Halcones UV Xalapa ... more details
Infobox Planet minorplanet yes width 25em bgcolour FFFFC0 apsis name 187304 symbol image caption discovery yes discovery ref discoverer James Whitney Young discovery site Table Mountain Observatory near Wrightwood, California discovered October 23, 2005 designations yes mp name 187304 alt names 2005 UV mp category orbit ref epoch November 30, 2008 aphelion 3.0203625 perihelion 2.2677401 semimajor eccentricity 0.1423237 period 1570.3745012 avg speed inclination 3.72423 asc node 42.11432 mean anomaly 335.74556 arg peri 268.92393 satellites physical characteristics yes dimensions mass density surface grav escape velocity sidereal day axial tilt pole ecliptic lat pole ecliptic lon albedo temperatures temp name1 mean temp 1 max temp 1 temp name2 max temp 2 spectral type abs magnitude 16.1 187304 2005 UV is a main belt asteroid discovered on October 23, 2005 by James Whitney Young at the Table Mountain Observatory near Wrightwood, California . References Reflist External links http ssd.jpl.nasa.gov sbdb.cgi?sstr 187304 JPL Small Body Database Browser on 187304 DEFAULTSORT 2005 UV Category Main Belt asteroids Category Astronomical objects discovered in 2005 Category Discoveries by James Whitney Young beltasteroid stub uk 187304 2005 UV vi 187304 2005 UV yo 187304 2005 UV ... more details
Unreferenced date June 2009 A disk filter is a type of filter water water filter used primarily in irrigation, similar to a screen filter , except that the filter cartridge is made of a number of disks stacked on top of each other like a pile of poker chips. The water passes through the small grooves in between and the impurities are trapped behind. Some types of disk filters can be backflushed in such a way that the disks are able to separate and spin during the cleaning cycle. Category Filters Category Irrigation tech stub ... more details
Orphan date February 2009 The Fermi filter is a common image processing filter that uses the Fermi Dirac statistics Fermi Dirac distribution in the Frequency domain to perform a low pass filter or high pass filter similar to a Gaussian blur , but the harshness can be scaled. References http www.wadsworth.org spider doc spider docs man fqnp.html Spider doc for using Fermi filter in cryoEM Category Image processing ... more details
File Kalolis.jpg thumb right 250px Filter press Filter press sometimes called Plate and Frame Filter ... ref http www.bhs filtration.com documents A Review of Filter Press Basics Versus Alternative Replace 20Final.pdf ref . The majority of today s filters are more correctly called chamber filter press , Membrane filter press , or Membrane Plate Filter . Many processes in the food, chemical or pharmaceutical ..., but are carried along in it. Filter presses separate the solids from the liquids so that the useful part can be processed, packaged or delivered to the next step. Filter presses generally work in a batch manner. The plates are clamped together, then a pump starts feeding the slurry into the filter press to complete a filtering cycle and produce a batch of solid filtered material, called the filter ... and the filtering cycle is repeated. A filter press uses increased pump pressure to maximize the rate of filtration and produce a final filter cake with a water content under 65 . This is more efficient ... reach anywhere between 50 200 PSI. A filter press consists of a series of filter chambers formed between square, rectangular or round filter plates supported on a metal frame. Once the filter chambers are clamped, the filter press is loaded with slurry. The plates on the filter press are clamped ... inch. In addition to the filter plate filtration medium, the growing filter cake enhances removal of fine particles in the slurry. The solution coming through the filter press water bibs, called ... in a water tank for recycled use. At the end of filtration, the solid filter cake can be removed. The whole .... See also Belt filter References Reflist External links http www.sat eng.com satfilterpress.pdf Manufacturer of Filter presses http www.dinworks.fi suotonauhapuristimet en.html Some of the pictures of Filter presses http www.leofilterpress.com filter press ?302.html various filter presses model demo http www.yilmaztekstilltd.com Filter Press http www.aesaritma.com.tr Biggest Filterpresses in the world ... more details
Unreferenced date December 2008 In theoretical physics , it is usually possible to organize physical phenomena according to the energy scale or distance scale . The theory of renormalization group is based on this paradigm. The short distance, ultraviolet UV physics does not directly affect qualitative features of the long distance, infrared IR physics, and vice versa. This separation of scales holds in quantum field theory . However, in its generalizations such as noncommutative field theory and quantum gravity string theory in particular it is expected that interrelations between UV and IR physics start to emerge. In many cases, these interrelations, UV IR mixing , may be demonstrated explicitly. Longer, technical description can be found http arxiv.org abs hepth 9912072 here Category Quantum gravity quantum stub quantum gravity ... more details
7653 1991 UV is a asteroid belt main belt minor planet . It was discovered by Seiji Ueda and Hiroshi Kaneda in Kushiro, Hokkaid , Japan, on October 18, 1991. ref http ssd.jpl.nasa.gov sbdb.cgi?sstr 7653 JPL Small Body Database Browser ref See also List of minor planets 7001 8000 References reflist beltasteroid stub MinorPlanets Navigator 7652 1991 RL5 7654 1991 VV3 Small Solar System bodies DEFAULTSORT 1991 UV Category Astronomical objects discovered in 1991 Category Discoveries by Hiroshi Kaneda Category Discoveries by Seiji Ueda Category Main Belt asteroids vi 7653 1991 UV ... more details
Merge to Filtration Filter media discuss Talk Filter chemistry Filter media section is duplicate in Filtration page date March 2011 Unreferenced date December 2009 Expert subject Chemistry date November ... top left glass fibre , in line polypropylene , Laboratory glassware Fritted glass glass frit , filter paper paper and PTFE syringe filters. In chemistry and common usage, a filter is a device usually ... shaped device . Filter efficiency can be improved in a number of ways, such as with the use of fluted filter paper. Other types of materials may be used to effect separations based on size, similar to filters, such as molecular sieves . The process of passing a mixture through a filter is called filtration ... , while the solid remaining in the filter is called retentate , residue , or filtrand . For references, just Google filtrand Filter media There are two types of filter media &mdash a surface filter , a solid sieve which traps the solid particles, with or without the aid of filter paper e.g. B chner funnel , Belt press , Rotary vacuum drum filter , crossflow filtration Crossflow filters , and a depth filter , a bed of granular material which retains the solid particles as it passes e.g. sand filter ... cheaper and easier to discard the contaminated granules than to clean the solid sieve. Filter media ... , the renal glomerulus filtrate Filters for various substances Water filter Air filter Oil filter Filters for specific applications Pneumatic filter Coffee filterFilter mask Filters by various methods Disk filterFilter paper Paper filter Media filter Membrane technology Membrane filter Cross flow filtration Sand separator Screen filter Sand filter Related devices and concepts Activated carbon Artificial membrane Non Filter trade name . Gas mask Sieve Colander Reverse osmosis Filter feeder Filter binding assay DEFAULTSORT Filter Chemistry Category Filters ar da Filter procesteknik de Filter Fluidtechnik es Filtro hidr ulica fr Filtre physique sq Filtrimi simple Filter fi Suodatus ... more details
Wikify date April 2010 An impingement filter can be used to purify a polluted solution, be it gas or liquid. The impingement filter acts by inducing the solution to change direction and the particles to adhere to the filter medium. In many cases this filter medium is designed to contain apertures of specific size which will absorb the impurities in the solution. The gas or liquid, less impurities, is permitted free passage through the medium. Common examples of impingement filters are air filter s, fuel filter s and oil filter s used in cars, trucks etc. References http pubs.acs.org doi abs 10.1021 i560093a015 Measuring Smokes and Rating Efficiencies of Industrial Air Filters http www.fao.org docrep t0512e t0512e0d.htm Gas cleaning and cooling Category Filters ... more details
Charcoal filter can refer to activated charcoal , used as a filter Charcoal Filter , a Japanese rock band disambig Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. ... more details
File Acoustic weighting curves 1 .svg right thumb 400px A weighting filter is used to emphasise or suppress some aspects of a phenomenon compared to others, for measurement or other purposes. Audio applications In each field of audio measurement, special units are used to indicate a weighted measurement as opposed to a basic physical measurement of energy level. For sound, the unit is the phon 1 kHz equivalent level . Loudness measurements In the measurement of loudness, for example, an A weighting filter is commonly used to emphasize frequencies around 3 6 kHz where the human ear is most sensitive, while attenuating very high and very low frequencies to which the ear is insensitive. The aim is to ensure that measured loudness corresponds well with subjectively perceived loudness. A weighting is only really valid for relatively quiet sounds and for pure tones as it is based on the 40 phon Fletcher Munson equal loudness contour . The B and C curves were intended for louder sounds though they are less used while the D curve is used in assessing loud aircraft noise IEC 537 . Telecommunications In the field of telecommunications, weighting filters are widely used in the measurement of electrical noise on telephone circuits, and in the assessment of noise as perceived through the acoustic response of different types of instrument handset . Other noise weighting curves have existed, e.g. DIN standards. The term psophometric weighting , though referring in principle to any weighting curve intended for noise measurement, is often used to refer to a particular weighting curve, used ... rays or other ionising radiation , a radiation monitor or dosimeter will commonly use a filter to attenuate ... are often in SU sun unit s or DUV Diffey weighted UV irradiance . The UV index is also used ... values Dead link date April 2011 http sound.westhost.com project17.htm A weighting filter circuit ... calculator dba spl.htm Weighting filter according DIN EN 61672 1 2003 10 DIN IEC 651 Calculation ... more details
In signal processing , a washout filter is a filter that makes a transition caused by changes in the input source more smooth. An example of this transition is the change in the modes of a signal . The general form of this filter is H s s s a It has been used in flight control stabilization. An example of this use of can be located at http www.mathworks.com products control demos.html?file products demos shipping control jetdemo.html Yaw Damper Design for a 747 Jet Category Signal processing Category Filter theory ... more details
Unreferenced date December 2009 Orphan date December 2009 A roofing filter is a type of filter used in a High frequency HF Receiver radio receiver . It is usually found after the first receiver mixer. The goal of a roofing filter is to reduce the passband of the 1st intermediate frequency IF to about 6 20 Hertz kHz , so that overloading and distortions by the following amplifier stages and mixers are reduced. The receiver s Bandwidth signal processing is not determined by the roofing filter but by a following crystal filter , mechanical filter or digital signal processing DSP filter. These allow much better filtering curve than a roofing filter, which often uses a high 1st IF of higher than 40 Megahertz MHz . Because of this, roofing filters are usually crystal filter types. While a 6 20 kHz roofing filter is acceptable for general purpose HF radio reception, demanding uses like listening to weak Continuous wave CW or sideband SSB signals requires the use of roofing filters that are a much smaller width appropriate to the reception mode in use. 250 Hz, 500 Hz, or 1.8 kHz would be acceptable values. These also require that the receiver uses a low first IF below Very low frequency VHF range, perhaps 9 or 11 MHz. DEFAULTSORT Roofing Filter Category Wireless tuning and filtering uk ... more details
Image RGBE filter on sensor.svg thumb 350px Isometric projection of the RGBE filter on a pixel array e.g., Charge coupled device CCD In digital photography , the RGBE filter is an alternative color filter array to the Bayer filter GRGB . It similarly uses a mosaic of pixel filters, of red , green , blue and emerald like cyan according to Sony , and so also requires demosaicing to produce a full color image. It was developed by Sony and is so far only used in the ICX456 8 megapixel charge coupled device CCD and in the Sony CyberShot DSC F828 camera. ref Phil Askey, http www.dpreview.com reviews sonydscf828 Sony Cybershot DSC F828 Review , DPReview.com, January 2004 ref Sony states that the reason for adding the fourth filter color is to reduce the color reproduction errors and to record natural images closer to the natural sight perception of the human eye. ref http www.dpreview.com news 0307 03071601sonyrgbeccd.asp Sony announce new RGBE CCD , press release, DPReview.com, Tue 15 July 2003 ref gallery Image RGBE filter.svg The RGBE array uses a fourth color, cyan , as well as red , green and blue Image Bayer pattern.svg Compare to the earlier Bayer filter , with twice the green cells gallery References references See also Color filter array Bayer filter CYGM filter Foveon X3 sensor photo stub Category Image sensors Category Color filter array ca Filtre RGBE es Filtro RGBE ... more details
In signal processing , a recursive filter is a type of filter signal processing filter which re uses one or more of its outputs as an input. This feedback typically results in an unending impulse response commonly referred to as infinite impulse response IIR , characterised by either exponential growth exponentially growing , exponential decay decaying , or sinusoid al signal output components. However, a recursive filter does not always have an infinite impulse response. Some implementations of moving average filter are recursive filters but with a Finite impulse response. Examples of recursive filters Kalman filter Category Signal processing electronics stub statistics stub economics stub ... more details
A deblocking filter is a filter video video filter applied to blocks in decoded video to improve visual quality and prediction performance by smoothing the sharp edges which can form between macroblock s when discrete cosine transform block coding techniques are used. The filter aims to improve the appearance of decoded pictures. H.264 deblocking filter In contrast with older MPEG Mpeg 1 Part 2 Video 1 H.262 MPEG 2 Part 2 2 MPEG 4 Part 2 4 standards, the H.264 deblocking filter is not an optional additional feature in the decoder. It is a feature on both the decoding path and on the encoding path, so that the in loop effects of the filter are taken into account in reference macroblock s used for prediction. When a stream is encoded, the filter strength can be selected, or the filter can be switched off entirely. Otherwise, the filter strength is determined by coding modes of adjacent blocks, quantization step size, and the steepness of the luminance gradient between blocks. The filter operates on the edges of each 4 4 or 8 8 transform block in the luma and chroma planes of each picture ... of filtering are assigned by this scheme where there is likely to be more distortion. The filter can ... size, the tuning of the filter strength by the encoder, the result of an edge detection test, and other factors . H.263 Annex J deblocking filter Although the concept of an in loop deblocking filter ... and H.264, the use of a deblocking filter as a post processing technique to improve the visual quality ... that could be substantially reduced by such a filter. References http www.itu.int rec T REC H.264 en H.264 Advanced video coding for generic audiovisual services subclause 8.7 Deblocking filter process Peter List et al., Adaptive Deblocking filter , IEEE Trans. on Circuits and Systems for Video Technology ... Compu graphics stub Category Video processing Category Video compression ca Deblocking filter es Deblocking filter fr Deblocking filter ... more details
wiktionary filter funnel A filter funnel is a laboratory funnel used for separating solids from liquids via the laboratory process of filter chemistry filtering . In order to achieve this, a disk shaped piece of filter paper is usually folded into a cone and placed within the funnel. The Suspension chemistry suspension of solid and liquid is then poured through the funnel. The solid particles are too large to pass through the filter paper and are left on the paper, while the much smaller liquid molecules pass through the paper to a vessel positioned below the funnel, producing a filtrate . The filter paper is used only once. If only the liquid is of interest, the paper is discarded if the suspension is of interest, both the solid residue on the paper and the filtrate are kept for further analysis. If the filter paper has small pores, long chained non polar liquids such as oil may clog the filter paper. Filter funnels vary in size depending on the volume of suspension required to be filtered. They are usually constructed out of plastic , except where the filtering of certain solvent s requires the use of glass . Cruder versions, made of polyethylene or galvanization galvanized steel and using a brass or plastic mesh filter, are typically for automobile automotive and workshop use, to filter debris from fuel, lubricating oil and coolant. The screen is reusable, and may be cleaned by inverting the funnel and tapping it on a hard surface, or popping it out and washing it separately. This helps to avoid spilling any liquids. Legal issues Like many other common pieces of glassware, filter funnels could potentially be used in the production of illegal narcotics. In an effort to restrict such production, some U.S. states including Texas have begun requiring permits to purchase such glassware, including filter funnels, as well as chemicals identified as common starting materials ... DEFAULTSORT Filter Funnel Category Laboratory equipment Category Water filters es Embudo de filtraci n ... more details
Image CYGM pattern.svg thumb Example CYGM pattern Image CYGM pattern on sensor.svg thumb CYGM pattern on an image sensor in isometric perspective In digital photography , the CYGM filter is an alternative color filter array colour filter array to the Bayer filter GRGB . It similarly uses a mosaic of pixel filters, of cyan , yellow , green and magenta , and so also requires demosaicing to produce a full colour image. CYGM gives more accurate luminance information than the Bayer filter, hence a wider dynamic range , but at the expense of colour accuracy. The CYGM filter is far less common than the Bayer filter. Charge coupled device CCDs that use it include the 3 megapixel Sony ICX252AK and ICS252AKF which sampled in October 1999 ref http www.dpreview.com news 9909 99090702sony3megapixel.asp Sony announce 3.24 megapixel CCD s Digital Photography Review Bot generated title ref . Cameras that use it include several Canon company Canon models of the 1999 2000 period, such as the Canon PowerShot S10 ref http www.dpreview.com reviews canons10 page2.asp Canon S10 Review 2. Intro Digital Photography Review Bot generated title ref , the original Canon Digital IXUS June 2000 ref http www.dpreview.com reviews canondigitalixus300 Canon Digital IXUS 300 S300 ELPH Review 1. Introduction Digital Photography Review Bot generated title ref , though subsequent IXUS models used the Bayer filter, and the Canon G1 the Kodak DCS 620x and DCS 720x DSLRs, and several Nikon Coolpix models ref Language icon ru Russian http www.fcenter.ru online.shtml?articles hardware digitalphoto 4197 ref . References references See also Color filter array Colour filter array Bayer filter RGBE filter Foveon X3 sensor DEFAULTSORT Cygm Filter Category Image sensors Category Color filter array photo stub ca Filtre CYGM es Filtro CYGM ... more details
File Waveguide post filter.JPG thumb right Waveguide post filter a bandpass filter consisting of a length of WG15 divided into a row of five coupled oscillation coupled microwave cavity resonant cavities by fences of three posts each. The ends of the posts can be seen protruding through the wall of the guide. Each cavity has a tuning screw which adjusts its resonant frequency by varying the capacitance between the broad walls of the guide. The screws are secured with jam nut s and thread locking compound . A waveguide filter is an electronic filter that is composed of waveguide components. See also Distributed element filter Waffle iron filter Bibliography Hunter, I. C., Theory and Design of Microwave Filters , pp. 201 269, London Institution of Engineering and Tecnology, 2001 ISBN 0 85296 777 2. Category Microwave technology Category Signal processing filter electronics stub ... more details
, a filter is a special subset of a partially ordered set . A frequently used special case is the situation ... whence they originate. The duality order theory dual notion of a filter is an ideal order theory ideal ... definition A non empty subset F of a partially ordered set P , is a filter if the following conditions ... y . F is a filter base For every x in F and y in P , x y implies that y is in F . F is an upper set A filter is proper if it is not equal to the whole set P . This is sometimes omitted from the definition of a filter. While the above definition is the most general way to define a filter ... A non empty subset F of a lattice P , is a filter, if and only if it is an upper set that is closed ... filter that contains a given element p is a principal filter and p is a principal element in this situation. The principal filter for p is just given by the set x in P p x and is denoted by prefixing p with an upward arrow math uparrow p math . The dual notion of a filter ... s. Filter on a set A special case of a filter is a filter defined on a set. Given a set S , a partial ... a filter F on S as a subset of P S with the following properties S is in F . F is non empty The empty ... is an upper set The first three properties imply that a filter on a set has the finite intersection property . Note that with this definition, a filter on a set is indeed a filter in fact, it is a proper filter. Because of this, sometimes this is called a proper filter on a set however, as long as the set context is clear, the shorter name is sufficient. A filter base or filter basis is a subset ... B is non empty and the empty set is not in B Given a filter base B , one may obtain a proper filter by including all sets of P S which contain a set of B . The resulting filter is said to be generated by or spanned by filter base B . Every filter is a fortiori a filter base, so the process of passing from filter base to filter may be viewed as a sort of completion. If B and C are two filter bases ... more details
14369 1988 UV is a asteroid belt main belt minor planet . It was discovered by Seiji Ueda and Hiroshi Kaneda in Kushiro, Hokkaid , Japan, on October 18, 1988. ref http ssd.jpl.nasa.gov sbdb.cgi?sstr 14369 JPL Small Body Database Browser ref See also List of minor planets 14001 15000 References reflist beltasteroid stub MinorPlanets Navigator 14368 1988 TK 14370 1988 VR2 Small Solar System bodies DEFAULTSORT 1988 UV Category Astronomical objects discovered in 1988 Category Discoveries by Hiroshi Kaneda Category Discoveries by Seiji Ueda Category Main Belt asteroids ... more details
by a specified minimum. In more complex cases, an audio filter can provide a audio feedback ... or sound effects, the aesthetic of the filter must be evaluated subjectively. Audio filters can be implemented in analog circuitry as analog filter s or in digital signal processing DSP code or computer software as digital filter s. Generically, the term audio filter can be applied to mean anything ... of the filter is set high enough that the internal feedback causes the filter circuitry to become a sine tone sine wave oscillator. See also Audio crossover Band pass filter Electrical resonance Electronic filter Equalization filter Feedback High pass filter Linear filter Low pass filter Oscillation Resonance Self resonant frequency DEFAULTSORT Audio Filter Category Tone, EQ and filter Category ... more details
unreferenced date July 2011 A line filter is the kind of electronic filter that is placed between an electronic equipment and a line external to it, to attenuate conducted radio frequencies Radio frequency interference RFI , also known as electromagnetic interference EMI between the line and the equipment. In particular, an AC Line Filter is used between the AC power line and the equipment. Types of line filters A Line Filter may be incorporated in a connector. For example An AC Line Filter may be incorporated in a modular IEC power inlet connector or Power entry module Power Entry Module A telephone line filter may be incorporated in a modular RJ11 connector A line filter may be mounted on a PCB An AC line filter may be a stand alone device, chassis mounted inside the equipment A facility AC Line Filter is mounted inside a room or cabinet, at the point where the AC power comes in Characteristics of line filters A line filter may be used to attenuate EMI in either direction. For example Emissions It may be used to reduce the unintentional conducted emission from the equipment, to a level sufficiently low to pass regulatory limits such as FCC part 15 . For example, in switching power supplies. Immunity It may be used to reduce the level of EMI entering the equipment, to a level sufficiently low not to cause any undesired behavior. For example, in equipment used in Radio Transmitter facilities The attenuation of Line filters is measured in 2 areas Common Mode attenuation to signals that appear identically on each of the wires going through the filter Differential Mode attenuation to signals that appear on just one of the lines For each Mode, the attenuation is characterized over the frequency spectrum, and measured in dB References Reflist DEFAULTSORT Line Filter Category Electrical power connectors Category Wireless tuning and filtering Category Tone, EQ and filter de Netzfilter pt Filtro de linha ... more details
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