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    News and Articles on Low Frequency



    Yoga improves heart health  Nov 10, 2009
    The team explains that very low frequency (VLF) variations in the spectra are linked to the body''s internal temperature control. Low frequency peaks are associated with the sympathetic control and high frequency with parasympathetic control. (India Times, India)

    SEC eyes volatility in high-frequency trading  Oct 27, 2009
    1-100G, DC and Ac coupled; low-G, low frequency seismic measurements, high frequency vibration monitoring, automotive testing applications. Featured. (Yahoo News -- Press Releases)

    Pushing the need for better public transport  Oct 26, 2009
    RapidKL is currently servicing 27 routes in PJ. as well as the providing feeder bus services but many have complained about the low frequency. The recently unveiled proposed locations of new stations for Kelana Jaya and Ampang LRT extension lines are not in PJ.. (The Star Online, Malaysia)

    The Lotus's Clever Way Of Staying Dry  Oct 24, 2009
    The key was videotaping the process while the lotus leaf rested on top of the woofer portion of a stereo speaker at low frequency. Condensation was created by cooling the leaf. (Science Daily)

    Guide to Digital TV  Oct 20, 2009
    High Definition television also has six channels of CD-quality surround sound (left, right, center, left rear, right rear, and low frequency effects). Finally, the signal is digitally transmitted, which eliminates all of the current imperfections we have lived with for the past thirty years, which include snow (weak signal), double images (ghosting or multi-path) and picture sparkles (impulse noise). (KLAS-TV.com, NV)

    Arizona mining fatalities down, injury rates up  Oct 18, 2009
    They point to the low frequency of mining-related deaths in Arizona as proof. But injuries at Arizona mines have grown steadily even as fatalities have declined in the past decade, federal data show. (AZCentral -- Business)

    Content & Communications World 2009 Exhibitor Profiles  Oct 14, 2009
    Demonstration by our engineering team over many years in special technical areas such as low Frequency Source Allen Variance and Phase Stability (as opposed to frequency stability), are well known in the industry. Geosync Microwave designing next generation SATCOM products with emphasis on reliability, service and engineering ingenuity. (Yahoo! Wire -- Entertainment News)

    Genome Sequence Published For Important Biofuels Yeast  Oct 11, 2009
    12, 2007) In a finding that could reduce the cost of ethanol fuel, researchers in Brazil report success in using low frequency magnetic waves to significantly boost the amount of ethanol produced through the. (Aug. (Science Daily)

    Residents voice concerns on drilling issues  Oct 7, 2009
    The vibrations (of seismic testing) will be low frequency. And with the wastewater we need to do what we can to move forward and keep these trucks centralized. (McKinney Courier-Gazette, TX)

    Next-Generation SRS Circle Surround Auto DX Now Available on Texas Instruments' DSPs  Oct 7, 2009
    Improved low frequency response that produces deep and rich bass. Vocals are elevated for crisp, clear dialog. (Yahoo! Wire -- Entertainment News)

    Making people move in slow motion  Oct 3, 2009
    He and his team boosted one specific form of relatively low frequency brain wave called a beta oscillation. "Different parts of the brain work together and generate certain frequencies," he explained, "and the movement areas of the brain come together in beta activity. "That activity is suppressed just prior to and during movement, so we think the body gets rid of it to prepare to make a new movement. (BBC News -- Science)

    Washington town clamps down on loud car stereos  Sep 30, 2009
    The Zipster wrote on Sep 29, 2009 9:54 AM:" A good friend is a hearing aid supplier and he just rubs his hands with glee every time he hears one of those high powered sound systems - "Well, there is a future customer". The low frequency sound generated by the woofers is very damaging to hearing. Loud exhausts should also be banned as they are annoying and totally unnecessary. I can remember being ticketed for the noise level from the split manifold and twin glasspak mufflers on my 1950 Chevy -... (Longview Daily News, WA)

    Filling in the doughnuts to give hall a sweeter sound  Sep 10, 2009
    At present, the walls in place are so thick they absorb sounds from low frequency instruments like double basses, Mr Kirkegaard said. The Opera House chief executive, Richard Evans, said the shortcomings were well known. (Sydney Morning Herald -- Australia)

    Tamiflu resistance noted  Sep 8, 2009
    "Isolated cases of Tamiflu-resistant pandemic H1N1 2009 are expected in line with observations from the low frequency seen in clinical studies," David Reddy, Roche pandemic taskforce leader, told a media conference. William Burns, who heads the Roche drugs unit, said the group's underlying business was in good shape even without the unexpected bonus of Tamiflu sales. (AlertNet)

    Acupuncture May Relieve Polycystic Ovary Syndrome  Aug 22, 2009
    They received a type of acupuncture known as electro acupuncture, in which the needles are stimulated with a weak low frequency electric current, similar to that developed during muscular work. A second group of women were provided with heart rate monitors and instructed to exercise at least three times a week. (Newsmax)

    How Intelligent are Dolphins?  Aug 20, 2009
    How Intelligent are Dolphins. How Intelligent are Dolphins. (Suite101.com)

    Fond farewells  Aug 18, 2009
    The Sydney Morning Herald Blogs: Noise Pollution. Welcome to Sydney Morning Herald Online. (Sydney Morning Herald -- Entertainment)

    Firefighters receive safety, equipment training  Aug 18, 2009
    Along with teaching basic skills, the school also taught firefighters about dealing with structure fires, which are high risk, low frequency occurrences. It s not something you do that often, but that s where firefighters get hurt and killed, Marcinkiewicz said. (Sealy News, TX)

    Professor warns big floods more frequent as climate warms  Aug 16, 2009
    Low frequency floods such as those with only a 1 percent probability of occurring in any year generally are a result of climate events. They often involve a set of conditions that just overwhelm the natural environment, Knox said. (La Crosse Tribune, WI)

    Heavy loadshedding leaves Delhi gasping  Aug 11, 2009
    The situation was particularly grim in the wee hours of Monday with Delhi Transco reporting loadshedding of up to 700MW. Said a Transco spokesperson: "Loadshedding to the tune of 63-688MW was carried out from 10pm on Sunday to 4.30am on Monday morning and again to the tune of 30MW to 257MW from 10.30am on Monday to 1pm in NDPL and BSES areas on on-hour rotational basis to avoid overdrawal, low frequency, low voltage and violation of inter-regional transmission capacity limits. There were nine... (India Times, India)

    Underground water 'triggers quakes'  Aug 11, 2009
    Measurements of the low frequency electro magnetic waves produced by solar activity and world-wide thunderstorm activity allow us to see electrically conductive zones deep within the earth. "A line of these measurements (known as magnetotelluric or MT soundings) across the northern part of the South Island show that localised zones of high electrical conductivity occur about 15 km below some of the major faults in Marlborough.". (India Times, India)

    Earthquake Sound Presents Its Next Creation From The TITAN Series, The Telesto Towers  Aug 8, 2009
    To maximize floor coupling in low frequencies, the Telestos are equipped with XLT EQ8 extra long excursion subwoofers that create tight, fast, and accurate low frequency extension. The EQ8 s are mounted 90. (Multichannel News)

    RFID Market Rides High on Government Support, Finds Frost & Sullivan  Aug 6, 2009
    The establishment of standards has solved issues related to quality and technical glitches, raising the performance of both low frequency (LF) and high frequency (HF) to a credible level. "Ultra high frequency (UHF) is now the emerging technology, as various mandates in the retail industry are leading to its extensive adoption," remarks Oswal. (PR Newswire)

    Elephant-size reception  Jul 28, 2009
    Kim Lengel, general curator at the Philadelphia Zoo, who was their keeper for many years, walked away from the crowd of news media and zoo staff. She walked alone to the top of the exercise yard. (Somerset Daily American, PA)

    Low frequency of moaA3 gene among the clinical isolates of Mycobacterium tuberculosis from Tamil Nadu and Pondicherry - south eastern coastal states of India  Jul 25, 2009
    Other articles by authors. Related articles/pages. (BioMed Central)

    Editorial: Train request has promise  Jul 25, 2009
    Passenger service on the Cascades trains subsidized by Oregon has always suffered from low frequency of trains (two round trips daily, supplemented by bus connections) and the 21/2 hours it takes between Eugene and Portland. More trains and much faster travel times less than two hours would be a big boon to train travel in the valley. (Albany Democrat-Herald, OR)

    Wireless power system shown off  Jul 24, 2009
    But instead of using acoustic resonance, Witricity's approach exploits the resonance of low frequency electromagnetic waves ... Hence, Witricity uses low frequency electromagnetic waves, whose waves are about 30m (100ft) long. Shorter wavelengths would not work. (BBC News -- Science)

    How Evolution Can Allow For Large Developmental Leaps  Jul 22, 2009
    "We showed that some mutations cause a low frequency of twin spores to develop in the same cell, rather than a single spore per cell, as occurs normally," Elowitz says. "The relative frequency of this form could be tuned up to high levels by other mutations.". (Science Daily)

    'A total nuisance'  Jul 21, 2009
    radiodr wrote on Jul 20, 2009 10:40 PM:" I've been there and done that....probaly upset a few neighbors along the way. I still have a pretty good system in my vehicle, but now I use a little more common sense where and when I use it. The problem is the "people" that use these stereo systems, Some of them have a real lack of respect...and are the one's you are complaining about. There are noise ordinance's in Sioux City and S. Sioux......(I know this first hand) All you have to do is get a... (Sioux City Journal)

    Socio-demographic factors related to periodontal status and tooth loss of pregnant women in Mbale district, Uganda.  Jul 19, 2009
    The results revealed moderate prevalence of bleeding and tooth loss, high prevalence of calculus, low frequency of pockets 4-5 mm. Disparity in pregnant women's oral health related to parity suggests that education of maternity care providers concerning oral health in pregnancy is warranted. Trial registration: ClinicalTrials. (BioMed Central)

    Effects of an irregular bedtime schedule on sleep quality, daytime sleepiness, and fatigue among university students in Taiwan  Jul 19, 2009
    05) frequency groups as compared to low frequency group. Conclusions. (BioMed Central)

    Cats 'exploit' humans by purring  Jul 14, 2009
    "But cats are able to produce a low frequency purr by activating the muscles of their vocal folds - stimulating them to vibrate," explained Dr McComb. Since each of these sounds is produced by a different mechanism, cats are able to embed a high-pitched cry in an otherwise relaxing purr. (BBC News -- Science)

    How your cat's purr manipulates you  Jul 14, 2009
    Unlike regular, low frequency purring, further study revealed that this "solicitation purr" contained an embedded sound with a similar frequency to a baby's cry; a sound that humans have an inherent bias to respond to. She and her colleagues played recordings of these purrs to human volunteers, who found them to be "more urgent and harder to ignore" than regular purring. (BBC News)

    Internet also helpful for reading  Jul 12, 2009
    According to the report, children who are low frequency readers prefer to read online rather than books. Since half of low-frequency readers go online every day, parents and teachers can use this appreciation of the Internet in order to spark their interest in reading and, in addition, direct them to reading books. (Bismarck Tribune, ND)

    Device Makes Objects Invisible In Certain Light Conditions  Jul 9, 2009
    ScienceDaily (July 8, 2009) A group of researchers from the Department of Physics at UAB have designed a device, called a dc metamaterial, which makes objects invisible under certain light very low frequency electromagnetic waves - by making the inside of the magnetic field zero but not altering the exterior field ... Nonetheless, scientists are working with other types of light such as microwaves -with experimental results in 2006 which signalled the first step towards invisibility-, low... (Science Daily)

    An assessment of functioning and non-functioning distractors in multiple-choice questions: a descriptive analysis  Jul 7, 2009
    The low frequency of items with three functioning distractors in the four-option items in this study suggests that teachers have difficulty developing plausible distractors for most MCQs. Test items should consist of as many options as is feasible given the item content and the number of plausible distractors; in most cases this would be three. (BioMed Central)

    Biomarker of breathing control abnormality associated with hypertension and stroke  Jul 1, 2009
    A study in the July 1 issue of the journal SLEEP identified a distinct ECG-derived spectrographic phenotype, designated as narrow-band elevated low frequency coupling (e-LFCNB), that is associated with prevalent hypertension, stroke, greater severity of sleep disordered breathing and sleep fragmentation in patients suffering from obstructive sleep apnea (OSA). Results indicate that the odds ratio for prevalent stroke was 1. (EurekAlert!)

    Newsweek: Why Jenny Sanford is a media genius  Jun 27, 2009
    Posted By: ultra low frequency @ 06/27/2009 3:33:48 AM ... Posted By: ultra low frequency @ 06/27/2009 2:48:08 AM. (MSNBC -- Politics)

    Alternative Feedstocks For Ethanol Production  Jun 24, 2009
    ScienceDaily (June 23, 2009) Scientists say they are forging ahead in developing replacements for petrochemical fuels that will be cost-competitive and renewable while having a minimal impact on the environment, reports Genetic Engineering & Biotechnology News (GEN). A consensus is emerging that no one technology will reign supreme and that a range of current and novel methodologies will contribute to meeting biofuel needs, according to the June 15 issue of GEN.. (Science Daily)

    Turbine proposal stirs discussion in Weymouth  May 29, 2009
    He said turbines produce high frequency sounds and low frequency noise. The low frequency sound has health consequences for the elderly and children, he said. (Weymouth News, MA)

    Baroda-Lake Township Police Officer John Hopkins with their new vehicle for drug enforcement that was paid for with forfeiture money from narcotics cases. John Madill / H-P staff  May 21, 2009
    Two large tubes are mounted under the SUV, and when the rumbler is activated, they emit low frequency tones that cause the pavement to vibrate in front of the vehicle being stopped. The device is typically activated after a driver fails to respond to a patrol vehicle's strobe lights. (The Herald-Palladium)

    Hunting 'the Hum'  May 19, 2009
    And the problem is on the increase, according to the Low Frequency Noise Sufferers' Association. Two thousand people have so far contacted its helpline, and it says it receives two or three new cases every week. (BBC News -- UK)

    Gaming Partners International Reports Financial Results for the First Quarter of 2009  May 14, 2009
    GPIC manufactures and supplies (under the brand names of Paulson, Bourgogne et Grasset and Bud Jones) casino chips, including plaques and jetons and low frequency and high frequency RFID chips, low and high frequency RFID readers, table layouts, playing cards, dice, gaming furniture, roulette wheels, table accessories, and other products that are used with casino table games such as blackjack, poker, baccarat, craps, and roulette. GPIC is headquartered in Las Vegas, Nevada, with offices in... (Yahoo! Wire -- Entertainment News)

    Leon's Horizon: One Hulking Hi-Fi  May 13, 2009
    In short, it's a gadget-lover's dream, offering many options for adjusting to subwoofer to capture high and low frequency ranges while searching for optimal sound. With the exception of the subwoofer, the Leon speakers are nothing special to look at. (BusinessWeek)

    Earth's Magnetic Field Hisses Due to Distant "Chorus"  May 8, 2009
    Thousands of miles above Earth, a cosmic chorus is filling the heavens with a mysterious, low frequency "hiss.". That's the conclusion of scientists studying data from a set of NASA probes designed to monitor substorms dramatic exchanges of energy among charged particles that spark the auroras at Earth's poles. (National Geographic)

    * PRC-US ties are not so impeccable  May 5, 2009
    The mission of the Impeccable is to use both passive and active low frequency sonar arrays to enable detection and tracking of long range undersea threats including submarines. China argues that the collection of such data is a hostile act and a preparation of the battle field and thus a threat to use force X a violation of the UN Charter and certainly not a peaceful use of the ocean. (Taipei Times, Taiwan -- World Business)

    Obituary: Dr. Richard H. Woodward  Apr 29, 2009
    Following the war he joined Pickard and Burns as vice president of Research, where he spent the remainder of his professional career, noted for his expertise in low frequency radio propagation for communication and navigation and implementation of the OMEGA System. Following his marriage in 1946 to Millicent Parker Cox, then dean of Women at Middlebury College, they made their home in Belmont, where they raised their two sons, and built a summer cottage in Wellfleet, in 1954. (Belmont Citizen Herald, MA)

    Check out what local music promoters have to say about the State College music scene and its future.  Apr 29, 2009
    With a capacity of 650, Lulu's Nightspot is aiming to fill the void, Gabbard said, but the problem is the low frequency of shows at the venue. "They'd have to seriously book shows on a regular basis," he said. (Daily Collegian, PA)

    Understanding Risk To Seattle's High-rise Buildings From A Giant Cascadian Earthquake  Apr 18, 2009
    The simulated shaking lasts for more than four minutes and it is dominated by low frequency motions ... g., wooden houses) are not particularly susceptible to these low frequency motions, tall buildings resonate at the low frequencies contained in these simulations. (Science Daily)

    GMC to debut midsized crossover Terrain  Apr 6, 2009
    But the high-pressure fuel injection system creates low frequency noises that are different from other engines, Meagher said. To counter the noise, GM changed the block structure and added layers of foam around the engine in key areas. (MSNBC -- Business)

    Gaming Partners International Reports Financial Results for the Fourth Quarter and Year-End 2008  Apr 1, 2009
    GPIC manufactures and supplies (under the brand names of Paulson(R), Bourgogne et Grasset(R) and Bud Jones(R)) casino chips including plaques and jetons and low frequency and high frequency RFID chips, low and high frequency RFID readers, table layouts, playing cards, dice, gaming furniture, roulette wheels, table accessories, and other products that are used with casino table games such as blackjack, poker, baccarat, craps, and roulette. GPIC is headquartered in Las Vegas, Nevada, with offices... (PR Newswire)

    Clinical Data Reinforce Safety and Efficacy of Boston Scientific's Two Drug- Eluting Stent Platforms  Mar 30, 2009
    The two-year pooled meta-analysis was intended to estimate the incidence of low frequency events or outcomes in key subgroups, and included 892 patients randomized to the PROMUS (XIENCE V) Stent and 410 patients treated with the TAXUS Stent. While overall pooled results and some subgroups at two years favored the PROMUS (XIENCE V) Stent for rates of Major Adverse Cardiac Events (MACE), the MACE results in patients with diabetes favored the TAXUS Stent. (PR Newswire)

    COHASSET LETTER / Wind turbines will change Cohasset  Mar 28, 2009
    New evidence is mounting that low frequency sound emitted from wind turbines may cause significant health problems. In addition, wind turbines do experience catastrophic failure and collapse (search Altona, N.Y., wind turbine collapse on March 6, 2009, for more information). (Cohasset Mariner, MA)

    Millions of fish shoal in seconds  Mar 27, 2009
    "The low frequency beams stay trapped in the water column and can cover a 100km area in a minute and a half.". This, says Professor Makris, is a vast improvement over conventional techniques, which Makris compared to "watching one pixel on a movie screen" while the new technology allows you to "see the entire movie.". (BBC News -- Science)

    CNVs in African Americans  Mar 25, 2009
    The duplication identified in high frequency in Whites and low frequency in African Americans on chromosome 17q21 reflects haplotype specific frequency differences between ancestral groups. The generation of the CNV map will be a valuable tool for identifying disease associated CNVs in African Americans. (BioMed Central)

    Novel Spinal Cord Stimulator Sparks Hope For Parkinson's Disease Treatment  Mar 22, 2009
    Nicolelis says that the low frequency seizures, or oscillations, seen in the animal model of Parkinson's disease have been observed in humans with the condition. Stimulating the dorsal column of the spinal cord reduces these oscillations, which researchers believe creates the ability to produce motor function. (Science Daily)

    Electronic Voice Phenomena  Mar 18, 2009
    Are EVPs Ghostly Voices Captured on Recording Devices. Are EVPs emanating from beyond the grave from souls who are trying to contact humans. (Suite101.com)

    Colonel's Corner  Mar 14, 2009
    Both are equipped with the newest generation of submarine tracking sonar, known as SURTASS LFA Surveillance Towed Array Sensor System, Low Frequency Active. The Victorious, operating in the Yellow Sea between the Korean Peninsula and mainland China, was approached at night by a PRC patrol vessel using a high-intensity spotlight or visual-spectrum laser to momentarily blind lookouts on the ship's bridge. (Fox News)

    Is Obama Failing the Foreign Affairs Test?  Mar 13, 2009
    Both are equipped with the newest generation of submarine tracking sonar, known as SURTASS LFA -- Surveillance Towed Array Sensor System Low Frequency Active. The Victorious, operating in the Yellow Sea between the Korean Peninsula and mainland China, was approached at night by a PRC patrol vessel using a high-intensity spotlight or visual-spectrum laser to momentarily blind lookouts on the ship s bridge. (Human Events Online)

    Human-generated Sounds May Be Killing Fish  Mar 13, 2009
    The research team found that exposure to high intensity, low frequency. (June 21, 2006) The heavy use of antibiotics in the rearing of fish could be detrimental to the health of the fish, but also that of animals and humans, a recent report says. (Science Daily)

    * Taiwan driving Chinese military goals  Mar 12, 2009
    SURTASS was developed as a submarine detection system for deep waters and the US Navy wants to add an active low frequency array to improve long-range detection of submarines in shallow waters. Intelligence sources say that Impeccable was actually monitoring the Shang-class (Type-093) nuclear-powered attack submarine, a new class China is building to replace the old Han-class and which has recently been seen at the Yulin base. (Taipei Times, Taiwan)

    China Naval Officers Bash U.S Navy 'Villains'  Mar 12, 2009
    The Impeccable "has the important military mission of using its ... passive and active low frequency sonar arrays to detect and track submarines," Hans Kristensen, a security expert with the Federation of American Scientists, wrote in a blog commentary about the dispute (www. fas. (Newsmax)

    US protests 'harassment' by Chinese vessels  Mar 10, 2009
    Impeccable directly supports the Navy by using both passive and active low frequency sonar arrays to detect and track undersea threats. The White House said Monday, March 9, that U.S. Navy ships will continue to operate in the South China Sea, where five Chinese vessels shadowed and maneuvered dangerously close to a Navy surveillance ship, prompting an American protest. (Lompoc Record, CA)

    Paradigm Shift In MRI Detection Results In Broad Images, Crystal Clear  Mar 6, 2009
    At this relatively low frequency the traditional, stationary detection principle does not limit coverage because the signal wavelength is much larger. However, compared to higher fields, the current clinical systems are less sensitive, yielding lower spatial resolution. (Science Daily)

    Seismic Communication in Elephants  Mar 1, 2009
    Like whales, elephants have large middle-ear bones that are designed to detect very low frequency sounds ... When they close off their ears, they are more sensitive to vibrations, and therefore can listen to longer-range, low frequency messages traveling from the earth, up through their bodies, to their ear bones. (Suite101.com)

    Help! I'm in a baby swing and can't get out  Feb 18, 2009
    The soothing center has six swing speeds and "comforting low frequency sounds the baby heard in utero." There are also soothing lullabies, "waketime" songs, and an MP3 player jack and holder so babies can listen to their own playlists through high-quality speakers. Who would have thought infants would have Top Ten playlists. (Fresno Bee -- Lifestyle)

    Mobile phone health effects still uncertain  Feb 8, 2009
    However, the study confirmed earlier findings that extremely low frequency fields, emitted for example by high voltages transmission lines, are possibly cancer causing and might increase childhood leukaemia. "New epidemiological studies indicate a possible increase in Alzheimer's disease arising from exposure to ELF fields," it said. (Sydney Morning Herald -- Technology)

    They're Saying What About Wind Farms? The Case for Early and Engaged Public Outreach  Feb 7, 2009
    If he and others in that industry were more honest about the potential adverse effects of their projects, such as from the low frequency noise emitted by thier machines, then maybe the dialogue with the public would be improved. I am not necessarily against wind power, since it can serve a purpose. (Energy Pulse, CO)


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