File Z tube.svg right thumb 200px Z tube The Z tube is an experimental Tool apparatus for measuring the tensile strength of a liquid . It consists of a Z shaped tube with open ends, filled with a liquid, and set on top of a spinning table. If the tube were straight, the liquid would immediately fly out one end or the other of the tube as it began to spin. By bending the ends of the tube back towards the center of rotation , a shift of the liquid away from center will result in the water level in one end of the tube rising and thus increasing the pressure in that end of the tube, and consequently returning the liquid to the center of the tube. By measuring the rotational speed and the distance from the center of rotation to the liquid level in the bent ends of the tube, the pressure reduction inside the tube can be calculated. Pressure Negative pressures Negative pressures , i.e. less than zero absolute pressure, or in other words, tension physics tension have been reported using water processed to remove dissolved gas es. ref Smith, Andrew M. http jeb.biologists.org cgi reprint 157 1 257.pdf Negative Pressure Generated by Octopus Suckers A Study of the Tensile Strengths of Water in Nature, J. exp. Biol. , 157, 257 271, 1991. ref Tensile strengths up to 280 atmospheres have been reported for water in glass. ref cite web url http books.google.co.uk books?id XjNS6v7q130C&pg PA255&lpg PA255&ots sGiBMDOEe6&dq spinning z tube cohesion water title Air and water the biology and physics of life s media ref References reflist Category Fluid mechanics Category Materials science Category Scientific instruments pnb ... more details
Tube riding is a term used by surfer s to describe riding well inside the curve or barrel of a finely shaped breaking wave. Under the right conditions, waves in some areas form a moving tube or cylinder as they break, for example, see the Banzai Pipeline in Hawaii. The most straightforward way to tube ride is by body surfing . Body surfers ride the waves on their stomachs without a board and thus they can relatively easily access the tube, even on a moderately small wave that is barreling. It is also possible to tube ride using a boogie board, a surfboard , and other wave riding tools. However tube riding is an advanced skill, and many surfers spend years and even lifetimes surfing without ever really getting tubed the term used for being inside the barrel of the wave . References reflist Surfing Category Surfing Category Surfing terminology surfing stub ... more details
refimprove date December 2009 wikify date December 2009 expert subject Chemistry date December 2009 File tubeice.jpg thumb right alt tubeice alt text tubeice Tube ice is a type of solid ice and water mixture in tube shape. It is made by a tube ice generator . It can be used in the cooling process, such as temperature controlling, fish fresh freezing, beverage bottle freezing, etc. It can be consumed alone and with food or beverages. The tube ice generator ice generator The tube ice generator in which the water is frozen in tubes extended vertically within a surrounding casing defining a freezing chamber spaced above the bottom of which is a distributor plate having apertures surrounding the tubes and defining the separate chamber into a warm gas is passed to heat the tubes to cause the ice rods to slide therefrom. ref http www.freepatentsonline.com 3759061.html Explanation of tube ice machine from freepatentsonline ref References reflist Category Water ice ... more details
In physics, a world tube is the path of an object occupies a nonzero region of space nonzero volume at every moment in time, as it travels through 4 dimension al spacetime . That is, as it propagates in spacetime , a world tube traces out a three dimensional volume for every moment in time. ref Malcolm Ludvigsen General relativity a geometric approach , Cambridge University Press, 1999, ISBN 0 521 63019 3, http books.google.com books?id hQdh3SVgZ8MC&pg PA74 p. 74 ref The world tube is analogous to the one dimensional world line in that it describes the time evolution of an object in space, with the difference that a world line it represents the path of a point particle of nonzero volume , whereas a world tube occupies finite space at all moments in time. The concept of world tube is particularly relevant for special relativity , where a world tube is embedded in Minkowski space . See also World line World sheet References reflist Category Fundamental physics concepts Category Theory of relativity Category Spacetime relativity stub ... more details
Unreferenced stub auto yes date December 2009 Orphan date December 2009 Infobox laboratory equipment name Durham tube image alt See Wikipedia Alternative text for images caption acronym other names uses Gas detection inventor manufacturer model related Test tube Durham tubes are used in microbiology to detect production of gas by microorganism s. They are simply smaller test tube s inserted upside down in another test tube. This small tube is initially filled with the solution in which the microorganism is to be grown. If gas is produced after inoculation and incubation, a visible gas bubble will be trapped inside the small tube. The initial air gap produced when the tube is inserted upside down is lost during Sterilization microbiology sterilization , usually performed at 121 C for 15 or so minutes. Image with unknown copyright status removed Image Acidgas.jpg DEFAULTSORT Durham Tube Category Microbiology equipment External links 1. http www.vumicro.com vumie help VUMICRO Nitrate Broth with Durham Tube.htm 2. http inst.bact.wisc.edu inst index.php?module Book&func displayarticle&art id 123 3. http www.bd.com ds technicalCenter inserts L007459 07 0506 .pdf 4. http www.quebact.com index.php en support technical data 173 2056 5. http www.pmlmicro.com assets TDS 555.pdf Cell biology stub Microbiology stub ar ja pl Rurka Durhama ... more details
adults, patients requiring tube insertion are very often young children. Since damage to the ear ... difficulty lying still during the procedure undergoes myringotomy and tube insertion under general ... closes without a residual hole at the tube site but in a small number of cases a perforation can persist. Long term studies have called the necessity of routine ear tube surgery into question, ref http ...?storyId 7249965 ref but current guidelines for American otolaryngologists indicate tube placement in the following .... Persistent eustachian tube dysfunction Barotrauma Especially for prevention of recurrent episodes ... more details
Tube drawing is a metalworking process to size tube by shrinking a large diameter tube into a smaller one, by drawing manufacturing drawing the tube through a die manufacturing die . This process produces ... working . ref name Degarmo Degarmo, p. 433. ref Because it is so versatile, tube drawing is suitable ... Press Inc. year 1994 edition 1st isbn 0 8311 3049 0 . ref . There are five types of tube drawing tube ... in many of the types to prevent buckling or wrinkling in the workpiece. Processes Tube sinking Tube sinking, also known as free tube drawing, reduces the diameter of the tube without a mandrel inside the tube. The inner diameter ID is determined by the inner and outer diameter of the stock tube ..., and the friction between the tube and the die. ref name tm Citation title Tube Making url http www.metalforming inc.com Consulting Tube Making tube making.shtml accessdate 2008 10 28 . ref This type .... As the tube thickness increases the surface finish quality decreases. This process is often used for the tubing on low cost lawn furniture. ref name tdp Citation last Shaheen first Laurence title Tube ... 28 . ref Rod drawing Rod drawing is the process that draws the tube with a mandrel inside the tube the mandrel is drawn with the tube. The advantage to this process is that the mandrel defines the ID ... tubing with the addition of a finishing tube sinking operation . ref name tdp This process is also ... to shape the ID of the tube. This process is slow and the area reductions are limited, but it gives the best inner surface finish of any of the processes. This is the oldest tube drawing method ..., ref name tm uses a mandrel that is not anchored whatsoever to shape the ID of the tube. The mandrel is held in by the friction forces between the mandrel and the tube. This axial force is given by friction ... also Pipe and tube bender Wire drawing References Notes reflist Bibliography Citation last Degarmo first ... publisher Wiley year 2003 edition 9th isbn 0 471 65653 4 . DEFAULTSORT Tube Drawing Category ... more details
Tube & Berger is the alias of Dance Electronica producers Arndt R rig and Marco Vidovic from Germany . The duo is best known in the United States for their 2004 1 Billboard magazine Billboard Hot Dance Airplay hit Straight Ahead Tube & Berger song Straight Ahead , featuring Chrissie Hynde on vocals. In summer 2003, Zane Lowe featured Tube & Berger s single Geradeaus during his evening show on BBC Radio 1 . External links Official website http www.tube berger.com Category German electronic music groups Category German dance music groups Category German musical groups Germany electronic band stub de Tube & Berger ... more details
Unreferenced date August 2009 Notability date August 2009 A Groan Tube is a toy marketed by various manufacturers which makes a distinct groan sound when turned on one end an eeeeeeeww sound one way, and a oowweeeee sound the other. The groan tube was invented in the early 1960s by Japanese toy manufacturer Kureo . The toy was first sold as Magic Noise Tube . Mattel was the first company to sell the product in the United States in 1973. The Jibba Jabber toy, made by Ertl , produced a similar sound. DEFAULTSORT Groan Tube Category 1960s toys Category Practical joke devices toy stub ... more details
The Additron was an electron tube designed by Dr. Josef Kates , circa 1950, to replace the several individual electron tubes and support components required to perform the function of a single bit digital full adder . Dr. Kates developed the Additron with the intention of increasing the likelihood of success and reliability while reducing the size, power consumption and complexity of the University of Toronto Electronic Computer, a.k.a. UTEC ref Vardalas JN 2001 . The Computer Revolution in Canada MIT Press, ISBN 0 262 22064 4 ref The Additron neither went into production at the Canadian Rogers Vacuum Tube Company , where the prototypes were built, nor was it used in the UTEC machine. It did make a widely publicized appearance at the 1951 Canadian National Exhibition operating an electronic game of Tic Tac Toe , dubbed Bertie The Brain, to show the marvels of electronic computing. The tube was registered with the Radio Television Manufacturing Association ref RTMA Engineering Department, Release 951, 20 March 1951 ref on 20 March 1951 as type 6047. ref Sibley L 2007 . Weird Tube of the Month The 6047 Tube Collector 9 5 20 ref ref Osborne CS 2008 .The Additron A Binary Full Adder in a TubeTube Collector 10 4 12 ref Patents US patent 2784312 References Reflist Category Adders Category Digital electronics Category Vacuum tubes Compu hardware stub ... more details
Unreferenced stub auto yes date December 2009 Orphan date October 2008 A tube caddy was a very large carrying case sometimes with hundreds of compartments for vacuum tube s. They were carried by repair technicians who did home service calls in the days when Receiver radio radios and Television TV sets television sets were too large and heavy for the average homeowner to bring to the repair shop. The tube caddy had to be large enough to hold several of each type of tube likely to be needed on a typical day of service calls so that the technician did not need to return to the shop during his rounds. Because tubes are quite light the caddy did not have to accommodate a large payload and could also be constructed with very light materials so the overall package weighed far less than it appeared to. Most repairs could be effected with the replacement of tubes since there were few other active components in electronics electronic equipment at that time so this was a very efficient way to accomplish fixes. DEFAULTSORT Tube Caddy Category Vacuum tubes Tech stub ... more details
Merge UV water disinfection date August 2009 Orphan date November 2006 The UV Tube is a design concept for providing inexpensive water disinfection to people in poor countries. The concept is based the ability of ultraviolet light to kill infectious agents by disrupting their DNA . It was initially developed under an open source model at the Renewable and Appropriate Energy Laboratory at the University of California, Berkeley . The form and composition of the UV Tube can vary depending on the resources available and the preferences of those building and using the device. However, certain geometric parameters must be maintained to ensure consistent performance. Several different versions of the UV Tube are currently being used in multiple locations in Mexico and Sri Lanka . See also Fluorescence External links Official websites http uvtube.berkeley.edu UV Tube Project Official Website http www.cantaroazul.org Cantaro Azul, a Mexican Nonprofit Organization DEFAULTSORT Uv Tube Category Water treatment ... more details
kenko slrc 04.html Kenko DG Teleplus Extension Tube Set ref An advantage to the non electrical tubes ... tube. A lens designed for a small flange focal distance may not be able to focus to infinity ... effective focal length. See also Canon Extension Tube List of Nikon compatible lenses with integrated autofocus motor Lens extension tube Kenko extension tubes for Nikon F mount References reflist External links http enchantingkerala.org digital photography school diy extension tube macro photography.php DIY Extension Tube How to easily build your own extension tube. http www.the digital picture.com Reviews Canon EF 25mm Extension Tube II Review.aspx Canon EF 25mm Extension Tube II review ... picture.com Reviews Kenko Extension Tube Set Review.aspx Kenko Extension Tube Set review at http www.the ... Experiments with Close up Lenses and Extension Tubes Spoken Wikipedia En extension tube article.ogg ... more details
Infobox Anatomy Name Eustachian Tube Latin tuba auditiva tuba auditoria tuba auditivea GraySubject 230 ... Map Middle ear map MapPos Eustachian Tube MapCaption The middle ear Precursor first branchial pouch System Artery Vein Nerve Lymph MeshName Eustachian tube MeshNumber A09.246.397.369 DorlandsPre t 21 DorlandsSuf 12826987 ICD9 ICD9 381.81 The Eustachian tube IPA en ju ste . n tju b , also auditory tube or pharyngotympanic tube is a tube that links the nasopharynx to the middle ear . It is a part of the middle ear. In adult humans the Eustachian tube is approximately 35 mm long. It is named after the sixteenth century anatomist Bartolomeo Eustachi . ref WhoNamedIt synd 1463 Eustachian tube ref Some modern medical books call this the pharyngotympanic tube . ref eMedicineDictionary pharyngotympanic 28auditory 29 tube pharyngotympanic auditory tube ref Anatomy The Eustachian tube extends from ... of the inferior nasal concha . A portion of the tube 1 3 proximal to the middle ear is made of bone ... such as the desert hyrax , an evagination of the eustachian tube is known as the guttural pouch and is divided ... in time to suppress bleeding. Embryologic development The Eustachian tube is derived from the first ... tubular structure becomes the Eustachian tube. Muscles There are four muscles associated with the function of the Eustachian tube Levator veli palatini innervated by the vagus nerve Salpingopharyngeus ... normal circumstances, the human Eustachian tube is closed, but it can open to let a small amount of air ... gum, may be used intentionally to open the tube and equalize pressures. When this happens, humans ... The Eustachian tube also drains mucus from the middle ear. Upper respiratory tract infections or allergies can cause the Eustachian tube, or the membranes surrounding its opening to become swollen, trapping ... date June 2011 Ear infections are more common in children because the tube is horizontal and shorter ... , commonly affects the Eustachian tube. Children under 7 are more susceptible to this condition because ... more details
Infobox laboratory equipment name Test tube image Two small test tubes held in spring clamps.jpg alt See Wikipedia Alternative text for images caption Two small test tubes held in spring clamps acronym other names Culture tube uses Chemical reaction inventor manufacturer model related Vacutainer br Boiling tube br Centrifuge tube A test tube , also known as a culture tube or sample tube , is a common piece of laboratory glassware consisting of a finger like length of glass or clear plastic tubing, open at the top, usually with a rounded U shaped bottom. A large test tube designed specifically for boiling liquids is called a boiling tube . Test tubes are available in a multitude of lengths and widths ... catalog Glassware Test Tube.html MiniScience.com catalog Test Tube , accessed March 27, 2009 ... of a lip is what distinguishes a test tube from a culture tube. ref Thomas Scott transl ..., narrow neck slows down the spreading of vapors and gases to the environment. A test tube filled ... and forensics to store samples of blood or other fluids. A test tube with a stopper plug ... held in special purpose test tube rack rack s, clamp tool clamp s, or test tube tongs tongs . Some ... for spice s. Manufacture Image tube mold.gif thumb 130px right Eight cavity test tube ... title Test Tube Molding Process A discussion on the molding of plastic test tubes publisher ... contents. For example, a blue top tube is a test tube of 5 ml containing sodium citrate as an anticoagulant ... dehydrogenase . ref http medical dictionary.thefreedictionary.com blue top tube TheFreeDictionary blue top tube Citing McGraw Hill Concise Dictionary of Modern Medicine. 2002 by The McGraw Hill Companies, Inc. ref See also Graduated cylinder References reflist External links wiktionary test tube ... el es Tubo de ensayo eo Provtubo eu Saiodi fa fr Tube ... tube sr sh Epruveta fi Koeputki sv Provr r tl Tubong pangsubok ta uk ... more details
Image Vacuum tube multimeter.jpg thumb 200px A Sylvania Electric multimeter tester for vacuum tubes A tube tester is an electronic instrument designed to test certain characteristics of vacuum tubes . Tube testers evolved along with the vacuum tube to satisfy the demands of the time, and this evolution faded with the tube era, yet with the High End advent, they became a pricey piece of equipment. The first tube testers were simple units designed for specific tubes to be used in the battle fields .... Types of tube testers Filament continuity tester The simplest one is the filament continuity tester ... fed directly by the mains. Tube checker The simplest of all tube testers. Tubes are used as low .... Emission tester Next in complexities is the emission tester , which basically treats any tube ... tube B battery B voltage , feeding the filament with the correct voltage, and an ammeter in series .... ref Know your Tube and Transistor Testers, Robert G. Middleton ref The problems of emission testers ... the tests at real load, voltages and currents they test the tube under static conditions, which are not even near the dynamic conditions the tube would work with in a real electronic device tubes with grids ... under normal conditions The advantage of an Emission Tester is, from all types of tube testers available, it gives the most reliable warning for tube wear out. If Emission is at 70 , transconductance ... between the different electrodes. Parametrical tester, DC Type This tester Applies DC voltage to the Tube ... W20 and Neuberger RPG375. Parametrical tester, AC Type This tester Applies AC voltage to the Tube under ... are the AVO testers. Mutual conductance tester The mutual conductance tester tests the tube dynamically ... the transconductance of the tube, indicated in micromhos. ref cite web url http www.radiolaguy.com ... measurements. Oscilloscope tube curve tracer plug in A full set of characteristic curves for vacuum ... 570 ref http www.radiomuseum.org r tektronix electron tube curve trac.html Radiomuseum Electron ... more details
dablink A torpedo tube in Rail terminology T Rail terminology refers to a type of long, thin air reservoir ... Navy File Torpdorohr eines Torpedoschnellbootes.jpg thumb Rear Torpedo tube of a former German Jaguar ... thumb Torpedo tubes of the French SNLE French submarine Redoutable Redoutable A torpedo tube is a device for launching torpedo es. There are two main types of torpedo tube underwater tubes fitted ... inch 533 mm diameter for heavy torpedoes underwater tubes , although other sizes of torpedo tube have ... tube A submarine torpedo tube is a more complex mechanism than a torpedo tube on a surface ship, because the tube has to accomplish the function of moving the torpedo from the normal atmospheric .... Thus a submarine torpedo tube operates on the principle of an airlock . Torpedo tube operation File Submarine torpedo tube.svg thumb A simplified diagram of a submarine torpedo tube File Torpedo tube on holland 1.jpg thumb right The torpedo tube on HMS Holland 1 The accompanying diagram illustrates the operation of a submarine torpedo tube. The diagram is somewhat simplified but shows the workings of a submarine torpedo launch. A torpedo tube has a considerable number of interlock engineering ... from opening at the same time. Also, the breech door cannot be opened when the tube is filled with water ... room. Load the torpedo into the tube. Hook up the wire guide connection and the torpedo power cable ... for torpedo warmup. Fire control programs are uploaded to the torpedo. Flood the torpedo tube. This may .... The tube must be vented during this process to allow for complete filling and eliminate air pockets ... pressure in the tube with ambient sea pressure. Open the muzzle door. If the tube is set up for Impulse ... valve remains closed. The slide valve allows water from the ejection pump to enter the tube. When the launch ... volume of water into the tube at high pressure, which ejects the torpedo from the tube with considerable ... if a guidance wire is used, it remains connected through a drum of wire in the tube. Torpedo propulsion ... more details
Image Teltron Electron Beam Tube.jpg thumb right 275px Teltron electron beam tube Image Teltron Diffraction Tube with Helmholtz Coils and Stand.jpg thumb right 275px Teltron diffraction tube with Helmholtz coils and stand A teltron tube named for Teltron Inc., which is now owned by 3B Scientific Ltd. is a type of cathode ray tube used to demonstrate the properties of electrons . It usually contains two electron gun s, which can project two thin electron beams at right angles. The beams can be bent by applying voltages to various electrodes in the tube. The electron beams are visible as fine bluish lines. This is accomplished by filling the tube with low pressure helium gas. A few of the electrons in the beam collide with the helium atoms, causing them to fluoresce and emit light. They are usually used to teach electromagnetic effects because they show how an electron beam is affected by electric field s and by magnetic field s. Motions in fields Charged particles in a uniform electric field follow a parabolic trajectory , since the electric field term of the Lorentz force which acts on the particle is the product of the particle s charge and the magnitude of the electric field, oriented in the direction of the electric field . In a uniform magnetic field however, charged particles follow a circular trajectory due to the cross product in the magnetic field term of the Lorentz force. That is, the force from the magnetic field acts on the particle in a direction perpendicular to the particle s direction of motion. See Lorentz force for more details. The Apparatus The teltron apparatus consists of a Teltron type electron deflection tube, a Teltron stand, EHT power supply 0 5000 V DC, variable . External links http lpc1.clpccd.cc.ca.us lpc physics pdf phys2 eoverm.pdf http lpc1.clpccd.cc.ca.us lpc physics pdf phys2 eoverm.pdf http www.fbise.edu.pk curr hsscsyll Physics.doc ... Tube Category Gas discharge lamps particle stub no Teltronr r de Fadenstrahlrohr ... more details
node position will cancel the fundamental frequency and force the tube to resonate at a 12th above ... adjustment is needed to zero in on the precise half note frequency. A closed tube is called a stopped pipe in the Organ music organ . See also Panpipes Open tube Sound Acoustics Physics of music ... more details
wiktionary breathing tube A breathing tube is a device or tool that can serve as a conduit for breathing . Various types of breathing tubes are available for different specific applications. Breathing tube may also refer to, or be part of Anatomy Vertebrate trachea , also known as the windpipe , a tube present in tetrapods that connects the pharynx or larynx to the lungs, allowing the passage of breathing gas most commonly air Invertebrate trachea , the open respiratory system employed by most terrestrial arthropods to transport metabolic gases to and from tissues Siphon mollusc , a tube like structure through which water or air may flow for one or more purposes such as locomotion, feeding, respiration, and reproduction Siphon insect , a tubular organ of the respiratory system of some insects that spend a significant amount of their time underwater, that serves as a breathing tube Medical applications Laryngeal mask airway , a supraglottic airway device used in anesthesia and in emergency medicine for airway management Tracheal tube , a device that is inserted into the trachea to establish and maintain an airway Anaesthetic machine Anesthetic machine , a machine which may be connected to a mask, laryngeal mask airway or tracheal tube to support the administration of anaesthesia Medical ventilator , a machine which may be connected to a mask, laryngeal mask airway or tracheal tube to mechanically move breatheable air into and out of the lungs Bag valve mask , a device which may be connected to a mask, laryngeal mask airway or tracheal tube to mechanically move breatheable air into and out of the lungs Anesthesia breathing circuit , a system of breathing hoses which may be connected to a mask, laryngeal mask airway or tracheal tube to support the administration of anaesthesia Underwater applications Snorkel , a J shaped rubber or plastic tube fitted with a mouthpiece at the lower ... are submerged Breathing tube breathing apparatus , a flexible tube in a scuba set or other breathing ... more details
Infobox company company name Tube Lines Limited company logo Image Tube lines.png company type Public Company foundation Start date 2002 12 31 location 15 Westferry Circus , London , United Kingdom key people Jon Lamonte CEO , Brian Sedar Bechtel and Lee Jones Ferrovial industry Railways products revenue operating income net income num employees 3500 initially parent subsid homepage http www.tubelines.com footnotes Sold to Public Sector End date 2010 05 07 fate Equity acquired by Transport for London ref name takeover Tube Lines Limited , initially known as Infraco JNP , has been a wholly owned subsidiary of Transport for London TfL since May 2010. Tube Lines is an asset management company responsible for the maintenance, renewal and upgrade of the infrastructure, including track, trains, signals, civil work and stations, of three London Underground lines. Although now owned by Transport for London, Tube Lines remains a separate company. ref name waboso cite news title Transforming the tube ... sic nolink y Aquisition of Jarvis s Interest in Tube Lines Complete date 31 January 2005 publisher Amey ... by private companies but it was owned and operated by London Underground LU , part of TfL. Tube ... this contract is now not applicable due to the change in ownership, Tube Lines remains responsible ... s takeover is complete date 27 May 2008 accessdate 10 May 2010 ref Tube Lines encountered a funding ... title Mayor wants government Tube money date 7 December 2009 accessdate 10 May 2010 work BBC News ... Ferrovial from Tube Lines for 310m. ref name takeover cite news url http news.bbc.co.uk 1 hi england london 8669823.stm title Tube maintenance back in house as new deal is signed date 8 May 2010 ... reflist External links http www.tubelines.com Tube Lines website http www.tubelines.com explorer tubelines map.pdf Map of Tube Lines planned system changes Category London Underground infrastructure de Tube Lines fr Tube Lines pt Tube Lines Limited ... more details
File C albicans germ tubes.jpg thumb right Germ tubes of Candida albicans A germ tube is an outgrowth produced by spores of spore releasing fungi during germination . The germ tube cellular differentiation differentiate s, grows, and develops by mitosis to create somatic hyphae . ref C.J. Alexopolous, Charles W. Mims, M. Blackwell, Introductory Mycology, 4th ed. John Wiley and Sons, Hoboken NJ, 2004 ISBN 0 471 52229 5 ref A germ tube test is a diagnostic test in which a sample of fungal spores are suspended in blood serum serum and examined by microscopy for the detection of any germ tubes. ref name doctorfungus Chapter IV. Germ Tube Test in http www.doctorfungus.org thelabor sec12.pdf YEAST IDENTIFICATION document at doctorfungus.org. Retrieved July 2011 ref It is particularly indicated for colonies of white or cream color on fungal culture , where a positive germ tube test is strongly indicative of Candida albicans . ref name doctorfungus See also Portal Fungi Oomycota References reflist 30em DEFAULTSORT Germ Tube Category Fungal morphology and anatomy Fungus stub ca Tub germinatiu pl Filamentacja ... more details
Image Ludwieg lab.gif 250px thumb Ludwieg Tube installation with a dump tank left , nozzle and test section center and expansion tube right A Ludwieg tube is a cheap and efficient way of producing supersonic flow. Mach numbers up to 4 are easily obtained without any additional heating of the flow. With heating, Mach numbers of up to 11 can be reached. Principle A Ludwieg tube is a wind tunnel that produces supersonic flow for short periods of time. A large evacuated dump tank is separated from the downstream end of a convergent divergent nozzle by a diaphragm or fast acting valve. The upstream end of the nozzle connects to a long cylindrical tube, whose cross sectional area is significantly larger than the throat area of the nozzle. Initially, the pressure in the nozzle and tube is high. To start the tunnel, the diaphragm is ruptured, e.g., by piercing it with a suitable cutting device, or opening the valve respectively. As always when a diaphragm ruptures, a shock wave propagates into the low pressure region here the dump tank and an expansion wave propagates into the high pressure region here the nozzle and the long tube . As this unsteady expansion propagates through the long tube, it sets up a steady Speed of sound subsonic flow toward the nozzle, which is accelerated by the convergent divergent nozzle to a supersonic condition. The flow is steady until the expansion, having been reflected from the far end of the tube, arrives at the nozzle again. For practical reasons, flow times are about 100 milliseconds for most Ludwieg tubes ref http ludwieg.caltech.edu PHF.pdf Experiments ... Tube was invented by Hubert Ludwieg 1912 2000 in 1955 in response to a competition for a transonic ... Shock tube Supersonic wind tunnel Hypersonic wind tunnel References references External links http ludwieg.caltech.edu Ludwieg Tube Laboratory at the California Institute of Technology http www.zarm.uni bremen.de 2forschung aero gb facilities bhhk index.htm Heated Ludwieg Tube at the ZARM in Bremen ... more details
Unreferenced date August 2009 Image Borehole tubewell.jpg thumb 300px Borehole of a tube well. It s usually 100 or more feet deep. Image tube well.jpeg thumb 300px The outlet of the tube well in a temporary reservoir on ground. A tube well is a type of water well in which a long 100 200 mm 5 to 8 inch wide stainless steel tube or pipe is bored into an underground aquifer. The lower end is fitted with a strainer, and a pump at the top lifts water for irrigation. The required depth of the well depends on the depth of the water table . Image rizwan tubewell.jpeg thumb 300px A simple sketch of tube well. Temporary reservoir A small reservoir of water is made at the outlet of the tube well. This reservoir is used for different usage of water by the local population. Drive mechanism Image Sm 26062010035.jpg thumb 300px Man in a tube well reservoir. Image Real fun in tubewell.jpg thumb 400px Man in a tube well reservoir. In the past, the pump was driven by large diesel engines. However, nowadays electric motors are used, as they are a much cheaper source of power. Casing The tube well casing houses the inlet, cylinder, piston valves and rising main of a down the hole type hand pump. Casing to support the external surfaces of the borehole against collapse may be needed, either temporarily or permanently, and is often made of PVC pipe , which is both cheap and inert. Seepage down the tube well bore is prevented by the sanitary seal. Seepage from the ground above the aquifer is excluded by the lengths of plain casing. Water to be pumped is admitted through slots in the lower lengths of casing. Water abstracted from aquifers in relatively soft ground usually contains sand or silt particles, which are liable to cause rapid wear to pump valves and cylinders and dissatisfaction ... the screen. Ground Water Safety The introduction of tube wells has led to major arsenic poisoning ... to a traditional tubewell More info on a trip for tubewell DEFAULTSORT Tube Well Category Water wells ... more details
Infobox television show name Rude Tube image genre Clip show presenter Alex Zane br Matt Kirshen E4 series only country United Kingdom num episodes 29 to January 2012 runtime 1 hour pilot br 30 minutes E4 Series Only br 1 hour Rude Tube 2009 br 1 hour Rude Tube III, Rude Tube IV and Rude Tube V br 2 hours Rude Tube 2010 & 2011 & 2012 br 1 Hour Rude Tube Epic Christmas br network Channel 4 first aired Start date 2008 2 16 df y present website http www.rudetubetv.com production website http www.octoberfilms.co.uk Rude Tube is a television show broadcast on Channel 4 . Rude Tube is presented by England ... tv and radio article3369527.ece title Unreported World Natural World The Choir Rude Tube accessdate ...?packedargs suffix 3DSubSectionArticle title From YouTube to Down the Tube accessdate 2008 02 21 ... Industry Media News 784439 C4s Rude Tube beats new ITV dramas 25m viewers title C4 s Rude Tube beats new ITV dramas with 2.5m viewers accessdate 2008 02 21 publisher Brand Republic author ... called Rude Tube 2009 was broadcast, with Alex Zane returning as host. ref http www.radiotimes.com ... in 2008. Rude Tube 2009 gained 3.8 million viewers with an audience share of 58 of 16 35 year olds. Rude Tube III featured 3 new 60 minute episodes that were shown on Channel 4 from 9 23 October 2009 which included Heroes and Villains, Weird and Wonderful and Superstars of the Web. Rude Tube ... 2 hour episode. Rude Tube IV started on Wednesday October 6, 2010 on Channel 4 and ran for 6 episodes. Rude Tube 2011 was another 2 hour special which aired on 7 January 2011. It showed 100 clips which were a combination of 50 highlights from Rude Tube IV and 50 new clips. A fifth season of the show ... by the first Rude Tube Christmas special a countdown of 50 Christmas themed clips which will air on Xmas Day at 10pm on CH4. The annual 2 hour year end round up called Rude Tube 2012 will air on New Years Day at 10pm on CH4. A Best of Rube Tube DVD, presented by Alex Zane, was released by Acorn Media ... more details
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