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Topic: Vent

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	Hydrothermal Vents
		A hydrothermal vent is a geyser on the seafloor.
		Although most of the deep sea is sparsely populated, vent sites teem with a fascinating array of life.
		As the vent water bursts out into the ocean, its temperature may be as high as 400°C (750°F).
	www.ocean.udel.edu /deepsea/level-2/geology/vents.html (617 words)

	Vent & Filters
		Vent Plugs with Filter can be used to relieve pressure or vacuum on bearing housings, gear boxes, reservoirs, or any application where venting is necessary.
		Vent Plugs with Filter and Check Valve is similar to the A-3432 series, however, it has a check valve which is designed to allow air to pass through it in one direction only.
		Vent Plugs with Filter and Deflectors can be used to relieve pressure or vacuum on bearing housings, gear boxes, reservoirs, or any application where venting is necessary.
	www.oilrite.com /VentFilters.htm (436 words)

	USGS Photo Glossary: Volcanic vent
		Small lava fountain erupts from a new vent on the flank of Pu`u `O`o spatter and cinder cone on the east rift zone of Kilauea Volcano, Hawai`i.
		Vents are openings in the Earth's crust from which molten rock and volcanic gases escape onto the ground or into the atmosphere.
		Vents may consist of a single circular-shaped structure, a large elongate fissure and fracture, or a tiny ground crack.
	volcanoes.usgs.gov /Products/Pglossary/vent.html (120 words)

	NOVA Online \| Into the Abyss \| Living at Extremes
		Vent species rely not on photons from the sun but on chemicals from the Earth's interior.
		While vent microbes thrive on the stuff, this gas is lethal to most other organisms, including the creatures that live within wafting distance.
		Biologists have seen "naked" snails around hydrothermal vents that could not form their calcium carbonate shells because the water was too acidic.
	www.pbs.org /wgbh/nova/abyss/life/extremes.html (618 words)

	TA Speaker Topics: Vent FAQ's
		If the vent is more than about a 1/4 wavelength then the frequency response in the bass range will become dependent on how the listener is positioned with respect to the driver and vent.
		As long as the vent is within about 1/4 wavelength of the driver it doesn't really matter which face of the cabinet it is on in order for the vent output to sum correctly with the driver output.
		For vented type speakers operated at full power that is, full excursion, it is possible to end up with audible noise from the air rushing in and out of the vent.
	www.trueaudio.com /st_ventq.htm (1393 words)

	Black Smokers and Giant Worms (Site not responding. Last check: 2007-11-07)
		Vents have been found at just about every type of sea floor spreading boundary (slow, intermediate, fast); they have been found at "hot spots"; and they have been found in back-arc basins.
		Water in these vents becomes superheated (because of the intense pressure) often reaching temperatures of 350 degrees C. As it streams to the surface and mixes with the cold bottom water (at a temperature of 2 degrees C), the vent water quickly cools and dumps its load of minerals.
		Whereas symbiosis is the norm for the Pacific tubeworms and bivalves, the Atlantic vent shrimp appear to scrape bacteria from the debris surrounding a vent.
	www.oceansonline.com /hydrothe.htm (4537 words)

	Vent Crab
		The vent crab is typically found among dense clusters of tubeworms at an average depth of 1.7 miles and can tolerate a temperature gradient that ranges from 77°F in the tubeworm clumps, to 36°F, which is the temperature of the water surrounding the vent sites.
		Because the vent crab is found at an average depth of about 2.7 kilometers (1.7 mi), it experiences about 250 times the atmospheric pressure that we do.
		While scientists have found that young vent crabs can live for months in the lab at atmospheric pressure, the adult crabs must be kept under high-pressure conditions similar to those back home or they will die.
	www.ocean.udel.edu /deepsea/level-2/creature/crab.html (348 words)

	Eruptions of Mount Spurr Volcano, Alaska, Photographs of the 1992 Eruptions
		Photography of the 1992 eruptions of the Crater Peak vent at Spurr volcano illustrates a number of phenomenon related to explosive volcanism and associated volcanic hazards.
		Crater Peak is a satellitic vent perched in the southern breach of the volcano's caldera which formed 10,000 - 20,000 years ago, truncating an ancestral stratovolcano.
		A satellitic vent is a vent that forms on the side of a volcano; a secondary vent.
	www.gly.bris.ac.uk /www/teach/virtrips/volcs/Spurr.html (3370 words)

	Hydrothermal Vent Communities
		Students will learn where vents are likely to form, how they form, and how physical conditions contribute to the development of a living vent community and to its eventual demise.
		In their most advanced stages vents are home to mussels, a variety of worms, anemones, and a large population of crabs, as well as many of the earlier colonists.
		Vents are most often found along the mid-ocean ridge and rift system that extends through the oceans at sea floor spreading centers.
	www.botos.com /marine/vents01.html (1737 words)

	Habitats: Hydrothermal Vent - Hydrothermal Vent Life
		Although hydrothermal vents are what we would consider a harsh environment, they are teeming (abundent) with life.
		As long as the vents remain active, which is usually one to two years, animals thrive there.
		In fact, more than 300 species live around the vents and are unique to this type of environment.
	www.onr.navy.mil /focus/ocean/habitats/vents2.htm (230 words)

	Hot Vents
		As the sulfide is released from the vent, bacterial populations grow and provide a food source for animals such as bivalve mollusks.
		In the vicinity of the vents, where sulfide-rich water is spewed out, bacteria that derive energy from the oxidation of sulfide live as mats on rocky surfaces and on the surface of soft sediments.
		Initially, all that was present were a few mobile animals and large clouds of sulfur bacteria, but large numbers of animals colonized later and grew very rapidly, which is a great contrast with growth rates of animals on the typically trophically depauperate deep sea.
	life.bio.sunysb.edu /marinebio/hotvent.html (1086 words)

	Vents Air Vents Aluminum Vents Aluminum Air Vent
		As the largest exclusive manufacturer of brick vents and block vents in the nation, Sunvent Industries offers a full line of both extruded aluminum vents as well as cast aluminum vents.
		Our vents are of the best quality and are all a minimum.125" thick aluminum, perfect for the commercial/industrial market as well as for use in high vandal areas and instances where a heavy duty vent is a requisite.
		If you require a standard size vent or custom size vent, commercial vent, industrial vent, or vent for any purpose please contact us for more information.
	www.sunventindustries.com (287 words)

	Novel Bacterial and Archaeal Lineages from an In Situ Growth Chamber Deployed at a Mid-Atlantic Ridge Hydrothermal Vent ...
		unknown to deep-sea hydrothermal vents (24, 35, 36, 50).
		Distribution of microorganisms in deep-sea hydrothermal vent chimneys investigated by whole-cell hybridization and enrichment culture of thermophilic subpopulations.
		nov., a thermophilic, chemolithoautotrophic, nitrate-ammonifying bacterium isolated from a deep-sea hydrothermal vent on the Mid-Atlantic Ridge.
	aem.asm.org /cgi/content/full/66/9/3798 (5308 words)

	Air Vent: ShingleVent II
		The vent is pre-formed to a 4/12 pitch, and fits pitches from 3/12 to 16/12.
		The vent is installed across the ridge of the roof.
		The vent is 12" wide so that matching shingles can be installed over the vent, allowing the vent to appear almost invisible from the ground.
	www.airvent.com /homeowner/products/ridgeVents-shingleVent.shtml (293 words)

	Direct Vent - Kingsman Fireplace
		Direct Vent Gas Fireplaces: Coaxial vent system of a pipe inside a pipe (generally 4"/7") the inside pipe is for exhaust while the outer pipe brings in outside air for combustion.
		It also lets you vent a product horizontally (great for when an appliance is installed on an outside wall).
		Direct vent appliances are usually limited to a length of 40 ft (with a maximum horizontal length of 20 ft) that will allow an appliance to function properly.
	www.kingsmanind.com /index.cfm?pageID=108 (100 words)

	Current update of the eruption of Kilauea Volcano, Hawai`i (Site not responding. Last check: 2007-11-07)
		Outside the crater, the field workers found that the MLK vent and pit grew substantially overnight on October 18-19, both in diameter and depth.
		A vent at the base of the east wall has been weakly spattering almost continuously since October 19, at waxing and waning levels.
		Nearest crags are relics of spatter cones at East Pond Vent.
	hvo.wr.usgs.gov /kilauea/update/main.html (1830 words)

	RE: dryer vent run
		i have one that is vented into a crawl space (which is also vented), and the dampness down there is terrible.
		There is supposed to be some type of alternative to outside venting - inside (water) vent that sits on the basement floor.
		Venting outside is a MUST, mainly due to the moisture, but the lint and fumes are good enough reasons.
	www.mrlandlord.com /archives/2002/apr02/115482.html (663 words)

	AMNH - Black Smokers
		Vent fields with towering sulfide chimneys on the Juan de Fuca Ridge (the destination of this expedition) have been compared to Bryce Canyon National Park in Utah.
		Other vents have been given names based on their appearance, such as Anemone Heaven, Garden of Eden, Snake Pit, Whelks Club, and Beehives.
		Several different vents have been discovered since the first site was found in 1977 near the Galapagos Islands by earth scientists in the small research submersible ALVIN.
	www.amnh.org /nationalcenter/expeditions/blacksmokers/black_smokers.html (579 words)

	Science News Online - Past Issues - Feature Article - 9/7/96
		The scientists surmised that the light came from the intense heat of the vent water.
		The animals need to get close enough to the vents to feed on chemosynthetic bacteria, which derive nourishment from the energy-rich sulfur compounds in the water, but they run the risk of getting cooked in the hydrothermal fluids if they get too near.
		Given that scientists only discovered deep-sea hydrothermal vents and thermophilic microbes in the last 20 years, an understanding of their significance is likely to evolve rapidly as researchers probe deeper into the extreme environments.
	www.sciencenews.org /sn_arch/9_7_96/bob2.htm (1655 words)

	Review: Kool Solutions Chill Vent 1
		The "Deluxe" version of the Chill Vent 1 comes with an unremarkable 80mm sleeve bearing fan with about a two watt rating; this is the only difference between it and the "Standard" version of the Vent.
		Many of them have vents on the side panel that the Chill Vent's shovel end faces, but those vents may be low on the panel, or high, or in the middle.
		The Chill Vent has more engineering in it than the average quick plastic duct-thing, though, and it is what it says on the label an easy-to-install cooling upgrade that doesn't cost a fortune and doesn't give you much opportunity to destroy your computer.
	www.dansdata.com /chillvent.htm (1965 words)

	Exploring the deep ocean floor [This Dynamic Earth, USGS]
		Since the early 1970s, scientists had predicted that hot springs (geothermal vents) should be found at the active spreading centers along the mid-oceanic ridges, where magma, at temperatures over 1,000 °C, presumably was being erupted to form new oceanic crust.
		View of the first high-temperature vent (380 °C) ever seen by scientists during a dive of the deep-sea submersible Alvin on the East Pacific Rise (latitude 21° north) in 1979.
		In the late 1980s, scientists documented the existence of a dim glow at some of the hot geothermal vents, which are the targets of current intensive research.
	pubs.usgs.gov /publications/text/exploring.html (766 words)

	Smart VENT flood vents - foundation flood vents (Site not responding. Last check: 2007-11-07)
		Built in a state-of-the-art, laser-driven manufacturing facility, Smart VENT is crafted from 100% stainless steel, and designed to last.
		During a flood event, the patented float mechanism disengages, allowing hydrostatic pressure to equalize resulting in a significant decrease in potential damage to your foundation crawlspace.
		The Smart VENT is so unique that it is recognized by FEMA for its innovative design.
	www.floodvent.com (147 words)

	Caldithrix abyssi gen. nov., sp. nov., a nitrate-reducing, thermophilic, anaerobic bacterium isolated from a ...
		Harmsen, H. M., Prieur, D. and Jeanthon, C. Distribution of microorganisms in deep-sea hydrothermal vent chimneys investigated by whole-cell hybridization and enrichment culture of thermophilic subpopulations.
		nov., a thermophilic, chemolithoautotrophic, sulfate-reducing bacterium isolated from a deep-sea hydrothermal vent at Guaymas Basin, and emendation of the genus Thermodesulfobacterium.
		nov., a thermophilic sulfur-reducing epsilon-proteobacterium isolated from a deep-sea hydrothermal vent.
	ijs.sgmjournals.org /cgi/content/full/53/1/323 (3353 words)

	Glo-Warm vent free blue flame heaters for residential use.
		Glo-Warm vent free blue flame heaters for residential use.
		Safe and clean burning, Glo-Warm Vent Free Gas Heaters are design certified by the American Gas Association and meet or exceed all government safety performance standards.
		ANSI Z21 11.2 Standard and National Fuel Gas Code revised in 1994 to permit wall mounted installations of vent-free gas heaters of 10,000 Btu or less in bedrooms and 6,000 Btu or less in Bathrooms.
	www.comfortglow.com /glowarmblueflame/gw6.html (424 words)

	Ski Horizon : book your ski stay, ski week end, ski holidays rental, ski vacation rental
		Vent is located at an altitude of 1900 meters in the Ötz valley, which is also home to Sölden.
		Aside from the main street, which is lined with a few hotels and pensions, there is little else to obscure the breathtaking scenery.
		Vent is a family resort with a fairly limited ski area consisting mostly of easy and intermediate runs.
	www.skihorizon.com /GB/GS/EnBref.asp?L=644 (246 words)

	Creative Energy Technologies Inc: Heartland Natural Energy Saving Dryer Vent Closure System
		On conventional dryer vents, outside air enters your home through the exposed dryer vent, which means higher heating bills in winter and higher cooling bills in summer.
		Remove the vent lid periodically and clean out any lint build-up, which may restrict free movement on the floating member.
		The Energy Saving Dryer Vent Closure™ is designed with an air activated floating shuttle cup, which gives you a positive close when the dryer is not in use.
	www.cetsolar.com /dryervent.htm (373 words)

	Vent Covers from Maxxair and Vent Parts for Sale
		After verifying that the Vent Cover is centered over the roof vent, trace on your roof (with a pencil) the location of the slots in the MaxxAir Vent Cover's mounting flange.
		The small washer, lock washer, and hex nut should be placed on the inside of the roof vent frame wall.
		Place the Vent Cover on the four upward pointing carriage bolts and fasten using the large washers and hex nuts provided.
	www.pplmotorhomes.com /parts/rv-vents/31-1919.htm (617 words)

	Comfort Glow vent free fireplace, vent free heater, gas firepit @ FMC
		The brands include the Comfort Glow CB series vent free heaters, the Glo-warm GW series vent free heaters, the Reddy heater G series garage heater, and Reddy heaters RH series outdoorsman vent free propane heater for hunting and fishing.
		Vent free heaters are also known as vent less heaters or unvented heaters.
		These heaters offer a variety of installation options for the vent free radiant flame heater, it can be wall mounted, it can be paired with an optional base or it can be installed into an optional mantle for the look and feel of a vent free fireplace.
	www.comfort-glow-comfortglow.com (995 words)

	Sky-Vent Ltd - Conservatory, Roofing, Vents, DIY
		Sky-Vent is a new generation of roof-vent featuring pre-glazed and factory sealed lids for maximum performance and speedy fitting.
		Vents have become very popular and the last thing conservatory manufacturers need is call backs on leaking vents.
		The BBA has weather tested the vent to BS6375 to 300 pascals water tightness pressure test.
	www.sky-vent.co.uk (285 words)

	Heat Fab Saf-T Vent CI Plus Special Gas Vent (Site not responding. Last check: 2007-11-07)
		Saf-T Vent CI Plus outer jacket is bright 430 stainless steel - no need to paint this system to protect it from outside elements or from airborne contaminants commonly found in many mechanical rooms.
		Saf-T Vent CI Plus is engineered from the appliance flue outlet to the termination: starters.
		Saf-T Vent is a registered trademark of Heat-fab, Inc. AL29-4C is a registered trademark of ATI Properties Inc.
	www.heat-fab.com /products/saftventciplus_desc.shtml (371 words)

	Discount Wood Vents...wood floor vents air grilles & registers.
		Usually the actual register is mounted in the sub floor and covered by sometimes decorative vents, but we can order any stock size wood grille with an attached metal damper.
		Original wide louver wood vents and baseboard vents do not have the attached damper as an option.
		These vents are also well made but different in that the frame is 4 pieces and all the inner louvers are individually hand assembled and glued.
	www.discountwoodvents.com (334 words)

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