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bassexpander
Joined: 13 Sep 2007
Location: Someplace you'd rather be.
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 Posted: Fri Aug 22, 2008 4:15 pm Post subject: And to think -- I was worried about cancer from my handphone |
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And how long before the green people lambast it for the energy loss and harm to the environment?
http://www.afterdawn.com/news/archive/15186.cfm
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Back in 2006, Dr. Marin Soljacic at the MIT Department of Physics and Research Laboratory of Electronics demonstrated the transmission of Electricity using using magnetic resonance. On Thursday, Intel was to demonstrate some progress in the wireless charging technology, which could be used to charge laptops, MP3 players and mobile phones without the need to connect any wires.
Intel was to demonstrate that it has cut the previous 50% loss in power to between 40% and 25% loss. However, Dr. Izahr Matzkevich, cofounder of wireless developer WildCharge, warned that the technology still has a long way to go before it becomes more efficient and more practical in use. Soljacic's original demonstrations could transmit electricity to portable devices up to 7 feet.
Present technology requires that wireless rechargers must be in contact with recharging bases or recharging mats. "Resonance technology like the MIT demonstration requires a heavy infrastructure -- right now, with coils of at least two feet -- to accomplish even a small distance," he said. "Add to that a 35 percent loss in power, this is not insignificant."
There is also the problem of interference with other electrical equipment. Nevertheless, the technology is still worth developing. |
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mindmetoo
Joined: 02 Feb 2004
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| Posted: Fri Aug 22, 2008 5:58 pm Post subject: |
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| Is this broadcast power? An idea cooked up by Tesla although I think it's hobbled by massive loss. |
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I_Am_The_Kiwi
Joined: 10 Jun 2008
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| Posted: Fri Aug 22, 2008 8:04 pm Post subject: |
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| only a matter of time before its the norm, yay for wireless charging i say. Get rid of all these fukn cables around the place. |
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Real Reality
Joined: 10 Jan 2003
Location: Seoul
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| Posted: Fri Aug 22, 2008 8:42 pm Post subject: |
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Cellular Phone Use and Risk of Benign and Malignant Parotid Gland Tumors A Nationwide Case-Control Study.
Siegal Sadetzki, Angela Chetrit, Avital Jarus-Hakak, Elisabeth Cardis, Yonit Deutch, Shay Duvdevani, Ahuva Zultan, Ilya Novikov, Laurence Freedman, Michael Wolf
American Journal of Epidemiology. 2007 December 6
http://www.ncbi.nlm.nih.gov/pubmed/18063591
or you might try this link for the abstract
http://aje.oxfordjournals.org/cgi/content/abstract/kwm325v1
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| The objective of this nationwide study was to assess the association between cellular phone use and development of parotid gland tumors (PGTs). The methods were based on the international INTERPHONE study that aimed to evaluate possible adverse effects of cellular phone use. The study included 402 benign and 58 malignant incident cases of PGTs diagnosed in Israel at age 18 years or more, in 2001-2003, and 1,266 population individually matched controls. For the entire group, no increased risk of PGTs was observed for ever having been a regular cellular phone user (odds ratio = 0.87; p = 0.3) or for any other measure of exposure investigated. However, analysis restricted to regular users or to conditions that may yield higher levels of exposure (e.g., heavy use in rural areas) showed consistently elevated risks. For ipsilateral use, the odds ratios in the highest category of cumulative number of calls and call time without use of hands-free devices were 1.58 (95% confidence interval: 1.11, 2.24) and 1.49 (95% confidence interval: 1.05, 2.13), respectively. The risk for contralateral use was not significantly different from 1. A positive dose-response trend was found for these measurements. Based on the largest number of benign PGT patients reported to date, our results suggest an association between cellular phone use and PGTs. |
Effects of intensive and moderate cellular phone use on hearing function.
M Faruk Oktay, Suleyman Dasdag
Department of Otolaryngology, Medical School of Dicle University, Diyarbakir, Turkey.
Electromagn Biol Med. 2006 ;25 (1):13-21
http://www.ncbi.nlm.nih.gov/pubmed/16595330
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| The purpose of this study is to investigate the effects of radiation emitted by mobile phones on the hearing of users. The study was carried out on three groups: 1) 20 men who have used a cellular phone frequently and spoken approximately 2 h per day for four years; 2) 20 men who have used a cellular phone for 10-20 min per day for four years; and 3) 20 healthy men who have never used a cellular phone (the control group). Brainstem evoked response audiometric (BERA) and pure tone audiometric (PTA) methods were used to measure the effects of exposure on hearing function of the subjects. In BERA measurements, I-III, III-V, and I-V interpeak latencies were evaluated. Interpeak latency of subjects in two experimental groups was compared to that of subjects in the control group. The BERA results showed no differences among the groups (p > 0.05).In PTA measurements, detection thresholds at 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz, and 8000 Hz frequencies were measured in all three groups. No differences were observed between moderate mobile phone users (10-20 min. per day) and control subjects. However, detection thresholds in those who talked approximately 2 h per day were found to be higher than those in either moderate users or control subjects. Differences at 4000 Hz for both bone and air conduction for right ears, and 500 Hz, and 4000 Hz bone and air conduction for left ears were significant for mean hearing threshold.This study shows that a higher degree of hearing loss is associated with long-term exposure to electromagnetic (EM) field generated by cellular phones. |
Cellular phone use and brain tumor: a meta-analysis.
Peter Kan, Sara Simonsen, Joseph Lyon, John Kestle
J Neurooncol. 2007 July 10
http://www.ncbi.nlm.nih.gov/pubmed/17619826
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BACKGROUND: The dramatic increase in the use of cellular phones has generated concerns about potential adverse effects, especially the development of brain tumors. We conducted a meta-analysis to examine the effect of cellular phone use on the risk of brain tumor development.
METHODS: We searched the literature using MEDLINE to locate case-control studies on cellular phone use and brain tumors. Odds ratios (ORs) for overall effect and stratified ORs associated with specific brain tumors, long-term use, and analog/digital phones were calculated for each study using its original data. A pooled estimator of each OR was then calculated using a random-effects model.
RESULTS: Nine case-control studies containing 5,259 cases of primary brain tumors and 12,074 controls were included. All studies reported ORs according to brain tumor subtypes, and five provided ORs on patients with >/=10 years of follow up. Pooled analysis showed an overall OR of 0.90 (95% confidence interval [CI] 0.81-0.99) for cellular phone use and brain tumor development. The pooled OR for long-term users of >/=10 years (5 studies) was 1.25 (95% CI 1.01-1.54). No increased risk was observed in analog or digital cellular phone users.
CONCLUSIONS: We found no overall increased risk of brain tumors among cellular phone users. The potential elevated risk of brain tumors after long-term cellular phone use awaits confirmation by future studies. |
Radiofrequency electromagnetic fields (UMTS, 1,950 MHz) induce genotoxic effects in vitro in human fibroblasts but not in lymphocytes
Claudia Schwarz, Elisabeth Kratochvil, Alexander Pilger, Niels Kuster, Franz Adlkofer and Hugo W. R�diger
International Archives of Occupational and Environmental Health
Published online: 16 February 2008
http://www.springerlink.com/content/222060761287780q
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Abstract
Objective
Universal Mobile Telecommunication System (UMTS) was recently introduced as the third generation mobile communication standard in Europe. This was done without any information on biological effects and genotoxic properties of these particular high-frequency electromagnetic fields. This is discomforting, because genotoxic effects of the second generation standard Global System for Mobile Communication have been reported after exposure of human cells in vitro.
Methods
Human cultured fibroblasts of three different donors and three different short-term human lymphocyte cultures were exposed to 1,950 MHz UMTS below the specific absorption rate (SAR) safety limit of 2 W/kg. The alkaline comet assay and the micronucleus assay were used to ascertain dose and time-dependent genotoxic effects. Five hundred cells per slide were visually evaluated in the comet assay and comet tail factor (CTF) was calculated. In the micronucleus assay 1,000 binucleated cells were evaluated per assay. The origin of the micronuclei was determined by fluorescence labeled anticentromere antibodies. All evaluations were performed under blinded conditions.
Results
UMTS exposure increased the CTF and induced centromere-negative micronuclei (MN) in human cultured fibroblasts in a dose and time-dependent way. Incubation for 24 h at a SAR of 0.05 W/kg generated a statistically significant rise in both CTF and MN (P = 0.02). At a SAR of 0.1 W/kg the CTF was significantly increased after 8 h of incubation (P = 0.02), the number of MN after 12 h (P = 0.02). No UMTS effect was obtained with lymphocytes, either unstimulated or stimulated with Phytohemagglutinin.
Conclusion
UMTS exposure may cause genetic alterations in some but not in all human cells in vitro. |
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mindmetoo
Joined: 02 Feb 2004
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| Posted: Sat Aug 23, 2008 4:15 am Post subject: |
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| Oh RR something we can agree on. And yet, given all the Koreans will cell phones I'd have thought you'd be hoping and praying cell phones really do kill. |
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ED209
Joined: 17 Oct 2006
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| Posted: Sat Aug 23, 2008 5:27 am Post subject: |
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| Great, can I cancel my electric and steal my neighbours? |
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