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Topic: Temperature



  
 Temperature extreme - Wikipedia, the free encyclopedia
Additionally, only temperatures recorded four feet (1.2 metres) or higher above the ground, and in the shade, are admissible, as ground temperatures in many areas are much hotter than air temperatures.
As extreme points, they provide a range of typical temperatures in that locale.
One inch above the ground, temperatures can exceed 90 degrees Celsius (194 °Fahrenheit) in the deserts.
http://en.wikipedia.org/wiki/Temperature_extreme   (204 words)

  
 Climate of North Dakota
The summer temperature patterns for June, July and August are nearly identical featuring strong north-south ridges of warm temperatures in the central part of the state and on the eastern and western borders with cooler north-south troughs between the ridges (Figure 8, 9, 10).
Temperatures of 32° F or lower are measured on about 180 days in the extreme southeast and extreme west central, and on about 210 days at some locations along the Canadian border (Figure 20).
Temperatures along the western border of the state average near 58° F, but in the Red River Valley in the east, temperatures range from 56° F in the north to 62° F in the south.
http://www.npwrc.usgs.gov/resource/othrdata/climate/temp.htm   (5012 words)

  
 Climate Impacts on the US. Agriculture Sector Assessment  Chapter4: Impacts of Variability on Agriculture
Effects of water and temperature stress on soybean plant growth and yield in humid, temperature climates.
For temperature in the site studies, the absolute differences between the GCM-modeled mean monthly temperature in the scenario with greenhouse gas forcing and the GCM modeled climate without forcing (often referred to as the control scenario) were calculated.
Increased variability of temperature or precipitation resulted in substantially lower mean simulated yields, while decreased variability of temperature produced insignificantly small increases in yield.
http://www.usgcrp.gov/usgcrp/nacc/agriculture/draft-report/chapter4.html   (8508 words)

  
 Hexapedia - Plant improvement
Increased tolerance of environmental pressures (salinity, extreme temperature, drought)
Plant improvement is practiced worldwide and is extremely improtant for ensuring food security and developing practices of sustainable agriculture Domestication Domestication of plants is selection process conducted by humans to produce plants that meet the needs of the farmer and the consumer.
Domestication, classical plant breeding and genetic engineering are all processes that alter the genome of a plant to enhance its qualities as a crop.
http://www.hexafind.com/encyclopedia/Plant_improvement   (1114 words)

  
 Extreme eukaryotes (web)
Temperature responses and tolerances in ciliates from Antarctic, temperate and tropical habitats.
Modifications to low temperature growth must, as in high-temperature systems (see above), involve substantial modification to the cell's lipid or fatty acid composition in order to retain membrane fluidity.
Presumably, in the stable, low temperature of the sea, the flagellates have lost the ability to synthesise some components, perhaps the lipids or fatty acids, rendering them unable to grow at higher temperatures.
http://www.nhm.ac.uk/research-curation/projects/euk-extreme   (4046 words)

  
 Climatology of Extreme Maximum Temperature Occurrences
Considering these limitations and the impacts of extreme temperature events, this comprehensive climatology of extreme temperature occurrences for the Northeast is beneficial to a wide range of users in agriculture, government, the energy industry, and research.
Except for temperature records, information about extreme values is limited to monthly tallies of days with a maximum temperature greater than or equal to 90 degrees and less than or equal to 32 degrees.
Monthly tallies also exist for days with a minimum temperature less than or equal to 32 degrees and 0 degrees.
http://met-www.cit.cornell.edu/reports/RR_93-6.html   (193 words)

  
 Climate Change 2001: The Scientific Basis
The changes in the return values of daily minimum temperature (Figure 9.29, bottom) are larger than those of daily maximum temperature over land areas and high latitude oceans where snow and ice retreat.
Large extreme temperature increases are also seen over the dry surface of North Africa.
The greatest increase in the 20-year return values of daily maximum temperature (Figure 9.29, top) is found in central and southeast North America, central and south-east Asia and tropical Africa, where there is a decrease in soil moisture content.
http://www.grida.no/climate/ipcc_tar/wg1/364.htm   (913 words)

  
 Extreme-Temperature Electronics (Tutorial - Part 1)
The same material may serve as a thermal sink for high temperature or a thermal source for low temperature, and may be as basic as ice/water or less familiar such as a bismuth alloy.
Persons needing to construct ETE hardware often have to select and adapt from the available "traditional" temperature range component base.
Generally speaking, the usual motivation for operating electronics at extreme temperatures is to improve the overall performance of a system, by having part of the system—an electronic subsystem—operate outside the usual temperature range.
http://www.extremetemperatureelectronics.com/tutorial1.html   (1671 words)

  
 Extreme-Temperature Electronics (Tutorial - Part 3)
For both field-effect and bipolar transistors the major cause of declining performance as temperature increases is increasing leakage in the p-n junctions.
Operating bipolar transistors at cryogenic temperatures always requires special designs and/or materials, a prevalent approach being the use of heterostructures as mentioned earlier.
Thus, in principle the basic upper temperature limit of each semiconductor material is determined by its bandgap energy.
http://www.extremetemperatureelectronics.com/tutorial3.html   (1637 words)

  
 How Extreme Temperature Affects Mortality: Location
First, the relationship between temperature and mortality risk from cardio-vascular, respiratory, and other diseases was estimated for each city; then the variation in risk across cities, due to difference in latitude and other variables, was examined.
Southern cities were more vulnerable to cold temperatures, showing a larger increase in mortality risk for temperatures less than the minimum mortality temperature threshold.
Results indicate the Northern cities were more sensitive to heat, showing a larger increase in mortality risk for temperatures greater than the minimum mortality temperature threshold.
http://unisci.com/stories/20021/0107022.htm   (598 words)

  
 The Highest Temperature Extremes
Extreme plastic bearings: new plastic compound enables bearings to endure high loads and temperatures.
A warm, dry wind that descends from the eastern slopes of the Rocky Mountains, causing a rapid rise in temperature.
Amazing temperature rises of 40° to 50°F in a few minutes occasionally may be brought about by chinook winds.
http://www.infoplease.com/ipa/A0001429.html   (363 words)

  
 Sea Grant Nonindigenous Species site (sgnis)
In the Trinity River at Fort Worth, TX, average, daily surface water temperature fluctuation was 5.5°C during June, July and August in 1993 and 1994, with maximal daytime water temperatures generally falling above the 30°C upper thermal limit of zebra mussels and minimal evening water temperatures falling below it.
Multifactor analysis of variance of the ln of survival time with shell length (SL) as a covariant indicated that temperature regime (P < 0.0001), but not sample replication (P = 0.294) significantly affected survival time and that survival time was negatively correlated with SL (P = 0.011).
Dense mussel populations have developed in the lower Mississippi River, near Baton, Rouge, LA, even though daytime, ambient, surface water temperatures approach or exceed this species’ incipient, upper thermal limit of 30°C during summer months.
http://www.sgnis.org/publicat/96Hernan.htm   (380 words)

  
 Oregon Extremes
Most extreme low temperatures occurred in the state on January 26 and 27th.
July and August have identical all-time maximum and minimum temperatures.
One side note: Newport's extreme maximum temperature in July 1928 was 67°F. (on three dates); the lowest maximum temperature was 62°F.!
http://www.ocs.orst.edu/Extremes.html   (2791 words)

  
 Mattson Interim Opinion on Interruptible Programs and Curtailment Priorities
A significant part of the population most vulnerable to extreme temperatures is thereby already exempt from rotating outages.
Limiting rotating outages to periods of moderate temperature (i.e., early morning or late evening) would, in many if not most cases, insulate certain areas from rotating outages altogether.
Further, even temperate areas can suffer extreme temperatures.
http://www.cpuc.ca.gov/PUBLISHED/AGENDA_DECISION/14681-04.htm   (2656 words)

  
 Aquatic Plant Directory
The temperature requirements of different species of aquatic plants varies accordingly to the region where they were found.
Aquatic plant growth will perform poorly if the given temperature is 4 degrees higher or lower than the stated optimum temperature.
"Easy" means that the plants can be growth by beginners in an aquarium with out any special requirements, "moderate" require some knowledge of aquatic horlticulture and "Difficult" means the plants usually have t have their specific requirements (i.e extreme temperature, water quality) in oder to be growth successfully.
http://www.vectrapoint.com/main/atlas/plantscan4.html   (726 words)

  
 RV-trine Extreme Temperature Formula - Camping World
In extreme hot and cold temperatures, the Odor Absorber molecularly binds to and neutralizes odor-causing compounds to provide an extra level of odor control.
RV-trine Extreme Temperature Formula eliminates odors, digests and liquifies waste and tissue, cleans probes and lubricates valves in any type of weather.
All-natural enzyme formula with odor absorber performs in extreme hot and cold temperatures.
http://www.campingworld.com/browse/skus/index.cfm?skunum=21168   (113 words)

  
 Temperature Compensated Crystal Oscillators
A TCXO that resides at one temperature extreme for an extended period of time may exhibit a frequency shift when returned to normal room temperature.
Older TCXO designs employ from one to three thermistors to flatten the crystal temperature frequency curve.
Temperature compensated crystal oscillators typically employ a thermistor network to generate a correction voltage which reduces the frequency variation over temperature.
http://www.wenzel.com/documents/tcxo.html   (482 words)

  
 NCDC: January 2002 City/State Extremes
Normally the first sub zero temperature occurs on December 13th and the area usually experiences 24 days with temperatures below zero during a winter.
The minimum temperature was 37 degrees F. at Glasgow, MT on Jan 8th, 2002.
The temperature reached 65 F at Waterloo, IA which is a new record high temperature for January, the previous record was 61 on Jan 1st, 1897 and Jan 25th, 2002.
http://www.ncdc.noaa.gov/oa/climate/extremes/2002/january/januaryext2002.html   (1785 words)

  
 Impacts of Temperature Extremes
Cold temperature impacts on agriculture are frequently discussed in terms of frost and freeze impacts early or late in growing seasons.
Extreme cold temperatures can cause significant ground freezing problems, especially if there is little snow cover.
The rise in water temperature during heat waves contributes to the degradation of water quality and negatively impacts fish populations.
http://sciencepolicy.colorado.edu/socasp/weather1/adams.html   (1642 words)

  
 August 2002 EEELinks
NASA will be one of their primary users, especially in the context of wide extreme temperature ranges.
Resistance of the pairs at room temperature, b.
After extensive testing for future space applications in the extreme temperature environments, it may be determined that the flip-chip advanced test assembly is a robust technology.
http://nepp.nasa.gov/eeelinks/August2002/lowhigh5.htm   (1111 words)

  
 comparison_1997_warm_phases
The 1998 spring temperature anomaly pattern, though in agreement with the canonical spring warming over the northern third of the United States, lacks the cold anomalies over Texas and the Four Corners states found in the canonical warm phase.
In the spring, the GHCN composite temperature anomalies
Boxes in (b) and (c) denote stations with 1997 winter temperature means that fall within upper or lower 5% of the (b) neutral and (c) warm phase gaussian distributions.
http://www.coaps.fsu.edu/papers/comparison_1997_warm_phases   (3535 words)

  
 United States Mean extreme monthly and annual maximum temperature
The residuals between observed and regression-predicted mean extreme maximum temperature were calculated for all stations for each month and for the year.
Mean extreme monthly and annual maximum temperature grid cell value
These monthly functions were applied to the mean monthly and annual maximum temperature grids produced by the PRISM modeling system to produce "first guess" grids for mean extreme maximum temperature.
http://www.climatesource.com/cd8/extmax_us.html   (752 words)

  
 DP83848YB - PHYTER<®> Extreme Temperature Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver
DP83848C - Commercial Temperature Grade, 0 To 70 Deg C
DP83848I - Industrial Temperature Grade, -40 To +85 Deg C
Our device meets IEEE 802.3u standards over an EXTREME temperature range of -40°C to 125°C. This device is ideally suited for harsh environments for example wireless remote base stations, automotive/transportation and industrial control applications.
http://www.national.com/pf/DP/DP83848YB.html   (325 words)

  
 FM 3-04.301Chptr 6 Effects of Temperature Extremes on the Human Body
If the temperature of the body is higher than the temperature of the surrounding objects, a greater quantity of heat is radiated away from the body than is radiated to the body.
Likewise, atmospheric temperature or altitude changes, aircraft interior ventilation and heating, and protective equipment can also create temperature extremes.
Army aviation usually takes place at the relatively low altitudes that are associated with extremely high temperatures and humidity.
http://www.cavalrypilot.com/fm1-301/ch6.htm   (2317 words)

  
 BAPI Extreme Temperature Platinum RTD
These units are packaged to handle vibration, moisture, and wide temperature ranges (see below).
These units can be used with the standard BAPI ruggedized transmitter to provide a linear proportional 4 to 20 mA output.
http://www.bapihvac.com/Extreme_Temp_RTD.htm   (68 words)

  
 Robot encyclopaedia
This is a PC (personal computer) which has been designed to withstand of rigors of an industrial setting, including vibrations, extreme temperature, humidity and/or exposure to liquids.
Investigational New Drug - a new drug, antibiotic drug or biological drug that is used in clinical investigation - also includes biological products used in vitro for diagnostic purposes.
http://www.trueforce.com/encyclopaedia/robot_encyclopaedia-I.htm   (391 words)

  
 06/29/99 -- New Study Shows Higher Rate of Warming and Sea Level Rise Than Previously
* Cold temperature extremes will almost certainly become less frequent;
For temperature, these values mean that future changes in global-mean temperatures will be 2 to 7 times more rapid than those of the 20th century and that rises in sea level will occur at rates 1 to 7 times those of the 20th century.
For all extreme events, however, it is unlikely that the projected changes will become evident in a statistically convincing way for many decades, with the exception of temperature extremes, which should become evident sooner.
http://www.climateark.org/articles/1999/newstsho.htm   (948 words)

  
 Bearing Grease suits extreme low-temperature applications., Dow Corning Corp.
Bearing Grease suits extreme low-temperature applications., Dow Corning Corp.
High temperature materials for applications up to 3200F
It has service temperature range of -100 to 400°F and can be used on freezer cart casters, cold room conveyor equipment, various meters and utility disconnect switch contacts.
http://news.thomasnet.com/fullstory/467347/rss/1083   (557 words)

  
 Anderol: Introducing Anderol® PQ™ 403-2 Extreme Low Temperature Lithium Complex Grease
Introducing Anderol® PQ™ 403-2 Extreme Low Temperature Lithium Complex Grease
Anderol: Introducing Anderol® PQ™ 403-2 Extreme Low Temperature Lithium Complex Grease
This new lithium complex grease is designed for extreme low temperature applications, including wheel bearings, automotive chasis, cams, bushings, and bearings where low temperature mobility is a concern.
http://www.imakenews.com/anderol/e_article000398745.cfm?x=b11,0,w   (159 words)

  
 Societal Aspects of Weather: General Weather Resources
This site includes information about U.S. hurricanes, U.S. heavy rainfall, U.S. temperature extremes, U.S. tornados, 1991-2000 weather events, historical global extremes, satellite images, U.S. radar composites, climatic data, U.S. local storm reports, climate of 1999, El Nino/La Nina, global climate change, and billion dollar weather disasters.
A complete resource of extreme temperature maps in GIF format.
The section provides an advisory and information service on weather and climate for use by Department of Agriculture officials in assessing impacts of weather and climate on agricultural production throughout the world.
http://sciencepolicy.colorado.edu/socasp/general.html   (1434 words)

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