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Topic: Maximum Exposure


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In the News (Wed 30 Dec 09)

  
  Exposure times
The sky background is ~3000 ADU in 10 sec through the H filter in nominal conditions, however we recommend single exposures should not exceed 6 seconds to minimize the impact of persistence left by the acquisition images and allow for sky variability.
In this case, we recommend a maximum exposure time of 15 minutes and dithering (either along the slit or off the slit) to facilitate sky subtraction and cosmic ray (and radiation event) corrections.
In the thermal infrared, the maximum exposure time is always set by the background (even with the deeper well) and depends on the wavelength and the instrument configuration.
www.gemini.edu /sciops/instruments/nirs/nirsExposures.html   (1024 words)

  
  Exposure - Wikipedia, the free encyclopedia
Exposure (photography), the total amount of light allowed to fall on the sensor during the taking of a photograph
Exposure value, a value given to all combinations of camera shutter speed and aperture that gives the same exposure
Multiple exposure, an exposure in which the sensitivity to light is reduced and then increased at least once during the total exposure time
en.wikipedia.org /wiki/Exposure   (399 words)

  
 ATSDR - PHA - Hill Air Force Base, Hill Air Force Base, Davis and Weber Counties, Utah
The maximum exposure dose for toluene found in indoor air in Layton homes in 1997 was half its EPA reference dose (Table 9).
In 1986, the maximum concentration of TCE (89 ppb) was found in a Layton field drain south of the eastern lobe of the groundwater plume.
The maximum exposure doses for water ingestion for TCE, 1,2-DCA, and benzene were ten times lower than their EPA oral reference doses (Table 11).
www.atsdr.cdc.gov /HAC/PHA/hillafb/hil_p2.html   (7324 words)

  
 Maximum Exposure TV Show - Maximum Exposure Television Show - TV.com
MAXIMUM EXPOSURE's adrenaline-filled moments bring viewers the most awesome action on television with frame-by-frame, replays, extreme close-ups and slow motion.
Re-runs of Maximum Exposure air in syndication on local...
Re-runs of Maximum Exposure air in syndication on local channels.', 'This fast-paced reality show features the most incredible stunts caught on tape.
www.tv.com /maximum-exposure/show/20712/summary.html   (400 words)

  
 Presettlement Risk   (Site not responding. Last check: 2007-11-01)
Maximum likely exposure (also called worst-case exposure)is a quantile of the probability distribution for replacement cost at a point in the future.
The maximum likely exposure is the dollar value such that there is a 97.5% probability that the replacement cost will be less than that value—it is the "maximum likely exposure" in the sense that there is a 97.5% probability that replacement cost will not exceed it.
Maximum likely exposure is plotted as a function of horizon for a hypothetical 5-year interest rate swap.
www.riskglossary.com /articles/presettlement_risk.htm   (2462 words)

  
 HUMAN EXPOSURE TO RFR: A COMPREHENSIVE REVIEW PERTINENT TO AIR FORCE OPERATIONS   (Site not responding. Last check: 2007-11-01)
Terms such as "safety standards" and "exposure standards" generally refer to, and are frequently used interchangeably with, specifications or guidelines on maximum permissible exposure levels to electromagnetic fields for the general public or for those in occupations and/or in working areas where they may be periodically exposed to higher than background levels of such fields.
For exposure of segments of the general population to RFR as a possible deleterious factor, however, exposures (especially the intensity levels and durations) vary widely with time for each individual and are highly variable from person to person.
The authors concluded that prolonged occupational exposure to microwaves did not affect the health status of the radar workers, and that their subjective complaints may be attributed to the specific occupational factors at the radar stations, such as noise, peculiar lighting, inadequate ventilation, and attention to the radar screen.
www.brooks.af.mil /AFRL/HED/hedr/reports/human_exposure/htmlfile13.html   (19428 words)

  
 [No title]
A typical value for the continuum background (from the telescope, sky and long wavelength leaks) using the 1-pixel wide slit in J, H and K is 30 counts in 100 seconds, and with a gain of six, corresponds to 180 electrons and a sky noise of approximately 13.5 electrons.
The drawbacks to using such long exposures are variations in the sky background and OH line intensities, OH line saturation (at H and K), and increasing likelihood of spikes on individual or small groups of detectors.
Optimum exposure times for the echelle are difficult to predict due to the small wavelength coverage of this grating, the exact wavelength of a particular observation and the changes in sky transmission with wavelength.
www.jach.hawaii.edu /UKIRT/instruments/cgs4/optical/exptime.htmlpp   (1164 words)

  
 The ORCBS - Radiation Safety - Programs & Guidelines - Radiation Safety Manual
Exposure standards have been established by the NRC and set at a level where apparent injury due to ionizing radiation during a normal lifetime is unlikely.
The exposure limit for whole body exposures is lower than that for a single organ because all organs and tissues are exposed in a whole body exposure, while only a single organ is involved in the single organ exposure limits.
Maximum permissible exposure limits to external radiation for adult and minor radiation workers are given in the table below.
www.orcbs.msu.edu /radiation/programs_guidelines/radmanual/19rm_maxexposure.htm   (509 words)

  
 RF_Microwave.html   (Site not responding. Last check: 2007-11-01)
Exposure limits in the uncontrolled environment are lower than in a controlled environment under certain conditions, such as resonance, or when exposure is complicated by associated hazards like RF shock or burn.
Maximum Permissible Exposure (MPE) - The root-mean squared (rms) and peak electric and magnetic-field strengths, their squares, or the plane-wave equivalent-power densities associated with these fields and the induced and contact currents to which a person may be exposed without harmful effect and with an acceptable safety factor.
Exposure associated with an uncontrolled environment is the exposure of individuals who have no knowledge or control of their exposure.
www.pppl.gov /eshis/ESHD_MANUAL/Old_ESHD_sections/RF_Microwave_TCR_R4-1.html   (5399 words)

  
 Safety and Health Program- RF Energy Upgrade Chapter
Recommended maximum exposure levels in terms of unperturbed electric and magnetic field strength as well as power density are therefore given in addition to the SAR limits.
For exposure limits of RF and microwave exposed workers, a safety factor of approximately 10 was incorporated with reference to the scientific- consensus threshold for adverse health effects.
Exposure to the public is potentially 24 hours a day for 7 days a week, compared with 8 hours a day, 5 days a week for RF and microwave exposed workers.
www.oshasafety.com /RF.htm   (717 words)

  
 MAXIMUM EXPOSURE 2004/05 Basic Information
MAXIMUM EXPOSURE is a one-hour, satellite fed, weekly show.
MAXIMUM EXPOSURE is closed captioned and in stereo.
MAXIMUM EXPOSURE is rated by Paramount and carries a TV Ratings icon.
www.paramounttv.com /maximum_exposure_2004_05_basic_information.htm   (184 words)

  
 EMF Section 5
ICNIRP applies a safety factor of 10 to derive occupational exposure limits, and a factor of 50 to obtain the guideline value for the general public.
Therefore, for example, in the radiofrequency and microwave frequency ranges, the maximum levels you might experience in the environment or in your home are at least 50 times lower than the threshold level at which first behavioural changes in animals become apparent.
In contrast, exposure to low frequency electric and magnetic fields is not time-averaged in the guidelines.
www.who.int /docstore/peh-emf/publications/What_is_EMF/section5.htm   (1550 words)

  
 California Code of Regulations, Title 8, Section 3578. Permissible Wheel Exposure for Periphery Grinding.   (Site not responding. Last check: 2007-11-01)
The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on machines known as swing frame and automatic snagging machines shall not exceed 180 degrees, and the top half of the wheel shall be protected at all times.
In operations where the work is ground on the top of the wheel, the exposure of the grinding wheel periphery shall be as small as practical, with a maximum exposure of 60 degrees.
The maximum angular exposure above the horizontal plane of the wheel spindle as specified in subsections (a) and (b) of this section shall never be exceeded, and the distance between the wheel periphery and the adjustable tongue or the end of the peripheral member at the top shall never exceed one-fourth inch.
www.dir.ca.gov /title8/3578.html   (444 words)

  
 EPRI: Analyses of Magnetic-Field Peak-Exposure Summary Measures
The measured magnitude of the maximum exposure from a time-series of measurements was found to vary inversely with the interval between measurements.
This variation implies that the maximum for a subject and the average maximum for a group of subjects depend on the sampling interval.
These results suggest that the maximum measured on one day may not be representative of the maximum for another day, and that numerous visits to an individual's home would be required in order to reduce the variability in the estimate of the maximum for that individual.
www.epri.com /OrderableitemDesc.asp?product_id=000000000001008152   (857 words)

  
 RIA - Piperazine and Piperazine Dihydrochloride
The exposure scenario is best represented as a dry manipulation use pattern with LEV as the pattern of control.
Any reduction in exposure which may arise from the introduction of MELs (8-hour TWA) for piperazine and piperazine dihydrochloride would be predicted to reduce the occurrence of induction of asthma.
Any reduction in exposure arising from the introduction of the short-term MEL would be predicted to reduce the occurrence of skin effects due to corrosion, irritation or sensitisation.
www.hse.gov.uk /ria/chemical/piperaz.htm   (3505 words)

  
 Credit Exposure on a Portfolio of Derivatives Transactions
Another shortcoming of adding the maximum exposures on a transaction-by-transaction basis in a portfolio relates to the timing of the default if one was to occur.
The peak maximum exposure on the cap occurs in two months and the peak maximum exposure on the swap occurs in two years.
Because it is relatively simple to calculate current exposures, and relatively more difficult to calculate potential exposure, several institutions update the current exposure on a daily basis but allow for potential exposure as a constant "add-on" to the current exposure.
riskinstitute.ch /141580.htm   (1639 words)

  
 1.2 Maximum Permissible Exposure
The laser exposure limits have been recently revised by ICNIRP in respect to ultrashort exposure durations for the retinal hazard region and the definition of dual limits for long-term exposure in the retinal hazard region [ICNIRP 2000].
In such threshold experiments, a number of exposures are delivered to the eye or the skin for a given laser wavelength, pulse duration and retinal spot size while varying the energy per pulse.
Rather, for a given exposure level, a certain percentage of exposures is found to lead to a lesion, which is due to variations within the tissue from site to site and from animal to animal, as well as due to experimental uncertainties [Sliney 2000].
info.tuwien.ac.at /iflt/safety/section1/1_2.htm   (999 words)

  
 Cedar Shake & Shingle Bureau
Maximum recommended weather exposure for 3-ply roof construction.
Maximum recommended weather exposure for two-ply roof construction.
Example: you are estimating a roof that measures 3200 square feet (32 squares).
www.cedarbureau.org /installation/roof_manual/page20.htm   (260 words)

  
 Untitled Document
The zone length is consistent for a given heater but may vary from one output to another.
Temperature Limits: Each heater will have a maximum maintain temperature as well as a maximum exposure temperature.
Exposure temperatures can be rated as power on or power off and a heater may have a higher ‘intermittent’ exposure temperature rating.
www.obrien-analytical.com /heatersel.html   (714 words)

  
 Maximum Exposure - Portfolio
Maximum Exposure are working with Global Snow Shows for their upcoming 2006 Ski Shows and on the launch of the Global Adventure Sports and Travel Show
Maximum Exposure in partnership with Sovereign Radio are looking to bring some exciting events to Eastbourne
Maximum Exposure are looking for further charities to benefit from Duck Races.
www.maxexpo.co.uk /Portfolio.htm   (218 words)

  
 Maximum Exposure Glamour Workshops   (Site not responding. Last check: 2007-11-01)
If you are brand new to glamour or model photography, MAXIMUM EXPOSURE GLAMOUR WORKSHOPS offers a very laid back atmosphere with no pressure, no intimidation and will allow you to produce great images at your own comfort level.
Typically, our workshops are smaller groups of a 10 - 15 photographers in order to ensure a maximum of 2 photographers per model that will allow us to be able to guarantee you at least a 1 hour minimum with each model per event.
Occasionally our workshops will be larger but we always try to accommodate the photographers and keep the maximum of photographers per model at 2 however, we still maintain the level of the learning experience.
www.max-expo.com /about.htm   (596 words)

  
 NASD: Noise Exposure and Agriculture
Prolonged exposure to agricultural noises could result in permanent hearing loss unless noise control measures are taken.
Limit your exposure to noise levels louder than 90 decibels to specified duration over an eight hour period.
The inner ear is highly susceptible to damage from overall exposure to loud noise.
www.cdc.gov /nasd/docs/d000701-d000800/d000770/d000770.html   (871 words)

  
 Astronomical Leage - Astro Note 16: Astrophotography I - Star Trails
Shorter exposures will result in shorter trail lengths.
Assuming an 8x enlargement of a print and "normal" viewing distances, a trail of 0.1 mm or less will be virtually unnoticeable.
The angle of sky coverage, B, of any film having linear dimension s used with a lens of focal length F is given by (s and F must have the same units):
www.astroleague.org /al/astrnote/astnot16.html   (214 words)

  
 Real Estate Agent Listing Exposure and Advertising
In addition, a text message will be sent directly to your cell phone whenever someone indicates they are interested in your property.
Featured Listings : Featured Listings on Homes.com generate qualified leads by giving your listings maximum exposure to active homebuyers who are searching for homes in your specified zip code(s).
For more information on how to maximize your listing exposure...
corporate.homes.com /agentsExposure.cfm   (194 words)

  
 Digital Camera Resource Page - Forums - fz20 shoot delay and maximum exposure
The only thing am afraid of is the delay between pressing the button and camera taking a picture.
11-02-2004 07:14 PM Shutter lag is not a problem especially after prefocus but the longest exposure is 8 seconds.
I used to do about 10% of my shots with exposures way much longer than 8 sec....
www.dcresource.com /forums/printthread.php?t=1987   (509 words)

  
 Maximum Exposure for your Business or Blog - lifehack.org
This article will show you how to gain maximum exposure for your blog or business through a complete press release strategy.
Stay on their radar with a polite follow up call on the date you schedule on your tracking sheet.
Since a published press release or an interview is a transitory event, request permission from the publication to make reprints, post on your website, or for podcasts.
www.lifehack.org /articles/communication/maximum-exposure-for-your-business-or-blog.html   (1411 words)

  
 "Maximum Exposure" (2000)   (Site not responding. Last check: 2007-11-01)
Plot Summary: "Maximum Exposure" is a reality-based show airing funny home video clips.
Discuss this movie with other users on IMDb message board for "Maximum Exposure" (2000)
Would be a good show except for the announcer
www.imdb.com /title/tt0306357   (365 words)

  
 Pasadena Sunrise, Local Noon, Sunset Times and Times of Maximum UV Exposure   (Site not responding. Last check: 2007-11-01)
Note the amazing thing that we have done with daylight savings time: we have made the range of sunset 3.25 hours, while keeping the range of sunrise to less than 1.5 hours.
The final plot below shows the times at which the UV reaches 0.4 times the maximum level it ever reaches (at noon on June 21).
The value 0.4 was picked because that corresponds closely with the conventional wisdom to "stay out of the sun between 9 a.m.
tchester.org /sgm/conditions/sun/sunrise.html   (576 words)

  
 Maximum Exposure at VLSI Technology (Stock Screen) | SmartMoney.com
Maximum Exposure at VLSI Technology (Stock Screen)
Stocks: Stock Screen: Maximum Exposure at VLSI Technology
You Are Viewing: Maximum Exposure at VLSI Technology (Stock Screen).
www.smartmoney.com /stockscreen/index.cfm?story=19980317intro   (1074 words)

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