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	Diurnal motion - Wikipedia, the free encyclopedia
		Diurnal motion is an astronomical term referring to the apparent daily motion of stars in "orbit" around the Earth, caused by the Earth's rotation around its axis.
		Diurnal motion can be seen in time-exposure photography [1].
		Conversely, following the diurnal motion with the camera, to eliminate it on the photograph, can best be done with an equatorial mount, which requires adjusting the right ascension only; a telescope may have a motor to do that automatically (sidereal drive).
	en.wikipedia.org /wiki/Diurnal_motion (367 words)

	Diurnal pressure variation
		With regard to latitude, the diurnal cycle has an amplitude around 1.16 hPa at the equator, and elsewhere it is proportional to the cube of the cosine of the latitude angle.
		Numerical models and surface observations show that deep convection in the Amazon basin acts like a pump (4, 5), lifting the air and heating it (due to latent heat release by condensation) in the afternoon, and sinking and cooling it (by radiative flux divergence mainly in the lower troposphere) around dawn.
		This is quite obvious along coastlines in warm climates, where the daytime heating of the PBL over land (but not over the ocean) produces a lower sea level pressure inland, and hence a pressure gradient which drives the sea breeze.
	www-das.uwyo.edu /~geerts/cwx/notes/chap01/diurnal.html (503 words)

	Diurnal - Wikipedia, the free encyclopedia
		in biology, a diurnal animal is an animal that is active in the daytime.
		in meteorology, diurnal means daily, especially pertaining to actions which are completed in 24 hours and are repeated every 24 hours; this can be seen in the diurnal temperature variation.
		in astronomy, diurnal motion refers to the apparent motion of stars around the Earth, caused by the Earth's rotation around its axis.
	en.wikipedia.org /wiki/Diurnal (172 words)

	Tectonic Processes on Europa:
		We refer to this periodic change as the "diurnal" variation, because it corresponds to a day on Europa (which is nearly identical to Europa's orbital period) and at 85 hr it is also comparable to the original, Earth-centric, definition of the diurnal period.
		In Section V we show how diurnal tidal stress, as well as the tidal stress of non-synchronous rotation caused by diurnal dissipation, may have played a major role in initial creation of cracks and in governing their global patterns.
		In that case, with each diurnal closure, the original walls (and the original extruded ridges) of the crack may be ratcheted gradually apart.
	pirlwww.lpl.arizona.edu /HIIPS/Publications/greenberg_tectonics (9541 words)

	Diurnal Variation in Forage & Livestock (Site not responding. Last check: 2007-10-22)
		The diurnal changes in composition of alfalfa tops taken from four plots of prebloom Ranger alfalfa at four different times in 1957 and 1958 are reported.
		Diurnal changes in nonprotein nitrogen, amino nitrogen, and calcium were not significant.
		Research reported here was designed (a) to study diurnal variation in dry matter yield and nonstructural carbohydrate percentages in alfalfa (Medicago sativa L.) and (b) to compare overnight dry matter and carbohydrate changes in alfalfa cut and left in the field with the changes in standing alfalfa.
	uwadmnweb.uwyo.edu /RenewableResources/range/Powell/Diurnal_Variation_AB.htm (3595 words)

	Strike-slip faults on Europa
		Diurnal tides due to orbital eccentricity may drive strike-slip motion on Europa through a process of "walking" in which faults open and close out of phase with alternate right and left-lateral shear.
		Diurnal tides due to orbital eccentricity may be a primary driver of tectonic activity on Europa.
		The diurnal change in orientation and amplitude of the tide, as well as other longer-term tidal variations, results in significant stress on the surface which may contribute to the formation of cracks and associated linear ridges (Helfenstein and Parmentier 1983 and 1985, McEwen 1986, Leith and McKinnon 1996, Greenberg et al.
	pirlwww.lpl.arizona.edu /HIIPS/Publications/hoppa_shear (4269 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		Diurnal variations of cloud fractional coverage and solar flux are the main factors of the cloud diurnal contributions to shortwave (SW) flux, although the diurnal variation of cloud type is also important.
		The cloud diurnal contribution to longwave (LW) flux at the top of the atmosphere (TOA) is produced by diurnal variations of cloud fractional coverage, cloud-top height, and surface temperature.
		The cloud diurnal contribution to LW flux at the surface is produced by diurnal variations of cloud fractional coverage and cloud-base height.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=501580 (329 words)

	AllRefer.com - diurnal circle (Astronomy, General) - Encyclopedia
		diurnal circle[dIUr´nul] Pronunciation Key, apparent path followed by a star due to the earth's rotation on its axis.
		The stars appear to move on the celestial sphere in concentric circular paths centered at the celestial poles.
		Stars whose diurnal circles lie completely above the horizon are called circumpolar stars.
	reference.allrefer.com /encyclopedia/D/diurnalc.html (188 words)

	Encyclopedia: Diurnal (Site not responding. Last check: 2007-10-22)
		Disambiguation Main articles: Life The most salient example of biological universality is that all living things share a common carbon-based biochemistry and in particular pass on their characteristics via genetic material, which is based on nucleic acids such as DNA and which uses a common genetic code with only minor...
		A diurnal animal is an animal that sleeps during the night and is active during the day.
		diurnal - belonging to or active during the day; "diurnal animals are active during the day"; "diurnal flowers are open during the day and closed at night"
	www.nationmaster.com /encyclopedia/Diurnal (489 words)

	Diurnals by Celeste Teal shows the basics for interpreting the personal daily horoscope.
		A Diurnal is a figure of the transits for a particular day but since it is based on the natal birth time, it can be used as a personal daily horoscope and is rather like a daily return.
		The Diurnal chart must be based upon the natal chart and progressions such as secondary progressions.
		The bodies lying exactly upon an angle of the Diurnal, whether the natal or daily planets, are of exceptional significance, along with the exact aspects they form.
	celestteal.bizland.com /diurnals.htm (2424 words)

	bioFusion °Diurnal° (Site not responding. Last check: 2007-10-22)
		Founded in November 2004, Diurnal has already entered into an agreement to develop a tablet that delivers hydrocortisone in a manner that mimics the normal physiological circadian rhythm.
		Diurnal has recently received Orphan Medicinal Product designation for this product from the European Medicines Agency, which affords 10 years of market exclusivity after the grant of a marketing authorisation in Europe.
		Diurnal’s directors believe that the global market for this product is estimated to be worth up to £100million.
	www.biofusion.co.uk /portfolio/diurnal.php (206 words)

	CPC - Stratosphere: UV Index: Diurnal Variability
		The variation throughout the course of the day (diurnal) of UV radiation is much like that of visible light.
		Where as the diurnal variation of incoming infrared radiation is similar to that of global radiation, there exists a delay between the time when the earth-atmosphere system is irradiated to when the temperature begins to increase.
		Depending upon the time of the year the lag in time between the peak radiation flux reaching the surface (solar noon) to when the surface temperature reaches its maximum can be as great as 3 to 4 hours.
	www.cpc.ncep.noaa.gov /products/stratosphere/uv_index/uv_diurnal.html (356 words)

	Hunting - Glossary - Discover The Outdoors (Site not responding. Last check: 2007-10-22)
		Thus, the tide is said to be diurnal when only one high water and one low water occur during a tidal day, and the tidal current is said to be diurnal when there is a single flood and a single ebb period of a reversing current in the tidal day.
		A diurnal constituent is one which has a single period in the constituent day.
		Duration of flood is the interval of time in which a tidal current is flooding, and duration of ebb is the interval in which it is ebbing, these intervals being reckoned from the middle of the intervening slack waters or minimum currents.
	www.dto.com /hunting/glossary/index.jsp?startwith=d (3003 words)

	Diurnal and dietary-induced changes in cholesterol synthesis correlate with levels of mRNA for HMG-CoA reductase -- ...
		Diurnal and dietary-induced changes in cholesterol synthesis correlate with levels of mRNA for HMG-CoA reductase -- Jurevics et al.
		Diurnal variation of rate of cholesterol synthesis, and of mRNA levels, in brains of the same rats described in the legend to Fig 1.
		Diurnal variation of rate of cholesterol synthesis, and of mRNA levels, in adrenal glands of the same rats described in the legend to Fig 1.
	www.jlr.org /cgi/content/full/41/7/1048 (4072 words)

	Involvement of the suprachiasmatic nucleus in diurnal ACTH and corticosterone responsiveness to stress -- Sage et al. ...
		Involvement of the suprachiasmatic nucleus in diurnal ACTH and corticosterone responsiveness to stress -- Sage et al.
		Involvement of the suprachiasmatic nucleus in diurnal ACTH and corticosterone responsiveness to stress
		The diurnal rhythm in adrenocorticotropin responses to restraint in adrenalectomized rats is determined by caloric intake.
	ajpendo.physiology.org /cgi/content/full/280/2/E260 (5792 words)

	Manly Hydraulics Laboratory (Site not responding. Last check: 2007-10-22)
		It is smaller than the mean range where the type of tide is either semi diurnal or mixed and is of no practical significance where the type of tide is predominantly diurnal.
		It is larger than the mean range where the type of tide is either semi diurnal or mixed, and is of no practical significance where the type of tide is predominantly diurnal.
		The great diurnal range or diurnal range is the difference in height between mean higher high water and mean lower low water.
	www.mhl.nsw.gov.au /www/tide_glossary.htmlx (5222 words)

	Diurnal Cycle of Tropical Convection (Site not responding. Last check: 2007-10-22)
		The development of a high resolution climatology of the diurnal cycle in convection, cloudiness and surface temperature has revealed several interesting facets, including the extent to which the strong diurnal signal over land is spread out over the adjacent oceans, probably through gravity waves of varying depths.
		The maximum diurnal amplitude occurs over land clear sky regions, as a result of the large response of the surface temperature to daytime solar heating.
		For convective regimes, the diurnal amplitude is larger over continents than over oceans, and the phase of the diurnal harmonic is more spatially consistent.
	www.met.rdg.ac.uk /~swsyangg/diurnal.html (428 words)

	TRMM Application on Tropical Rainfall Diurnal Cycle
		Rainfall diurnal cycle is fundamental to many regional climates.
		Numerous scientists have studied the diurnal variation of rainfall over the tropical land and ocean using TRMM satellite measurements.
		Diurnal cycle of precipitation over the global tropics derived from the TRMM Combined Instrument algorithm (2B31).
	daac.gsfc.nasa.gov /precipitation/trmm_apps/trmm_diurnal.shtml (353 words)

	Annual and diurnal variations in fireball rates \| International Meteor Organization (Site not responding. Last check: 2007-10-22)
		In past centuries some reports of fireball showers have been noted (Dall'Olmo, 1978) but it could possibly be that such showers are only reports of bright meteors between magnitudes +1 mag and -2 mag.
		The diurnal variation is also affected by the same situation.
		Superimposed on this is a gentle decrease of fireball frequency towards the poles, because the orbits of the meteoroids responsible for producing these meteors are concentrated near the ecliptic.
	www.imo.net /fireball/rates (729 words)

	Diurnal variation of flow-mediated vasodilation in healthy premenopausal women -- Ringqvist et al. 279 (6): 2720 -- AJP ...
		diurnal variation with an accumulation in the morning (20, 22).
		It was considered important for the outcome of the study that the subjects did display a normal diurnal rhythm.
		Diurnal variation and triggers of onset of acute cardiovascular disease.
	ajpheart.physiology.org /cgi/content/full/279/6/H2720 (4066 words)

	Diurnal rhythm of H+-peptide cotransporter in rat small intestine -- Pan et al. 283 (1): 57 -- AJP - Gastrointestinal ...
		In the present study, we focused on the diurnal rhythms of intestinal absorption of small peptides and its molecular mechanism.
		The diurnal variation in the expression of PEPT1 and SGLT1 protein in the kidney was tested further (Fig.
		Diurnal fluctuations in the number of cells in mitosis and DNA synthesis in the jejunum of the mouse.
	ajpgi.physiology.org /cgi/content/full/283/1/G57 (3948 words)

	The Celestial Sphere
		This is termed the daily or diurnal motion of the celestial sphere, and is in reality a consequence of the daily rotation of the earth on its axis.
		The diurnal motion affects all objects in the sky and does not change their relative positions: the diurnal motion causes the sky to rotate as a whole once every 24 hours.
		Superposed on the overall diurnal motion of the sky is "intrinsic" motion that causes certain objects on the celestial sphere to change their positions with respect to the other objects on the celestial sphere.
	csep10.phys.utk.edu /astr161/lect/celestial/celestial.html (824 words)

	Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum ...
		Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum leptin and food intake -- Denis et al.
		Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum leptin and food intake
		for the diurnal changes in intake and their alteration by lactation.
	joe.endocrinology-journals.org /cgi/content/abstract/183/1/173 (300 words)

	Impaired Diurnal Adrenal Rhythmicity Restored by Constant Infusion of Corticotropin-releasing Hormone in ...
		One posited function of the diurnal variation in glucocorticoids is the modulation of carbohydrate metabolism (40, 41).
		Akil (1993) Diurnal CRH mRNA rhythm in the hypothalamus: decreased expression in the evening is not dependent on endogenous glucocorticoids.
		Watts, A.G., and L.W. Swanson (1989) Diurnal variations in the content of preprocorticotropin-releasing hormone messenger ribonucleic acids in the hypothalamic paraventricular nucleus of rats of both sexes as measured by in situ hybridization.
	www.jci.org /cgi/content/full/99/12/2923 (5096 words)

	Diurnal variability---time to change asthma guidelines? -- Reddel et al. 319 (7201): 45 -- BMJ
		A sample stylised cosinor distribution of peak flow with a bathyphase (trough) of 300 l/min at 0400 and an acrophase (peak) of 400 l/min at 1600.
		Diurnal variability for peak flow recorded at 0600 and 2000 is (375-305)×100/340=21%, while that for peak flow recorded at 0600 and 2200 is (350-305)×100/328=14%
		Diurnal variation of PEF and its use in epidemiological studies.
	www.bmj.com /cgi/content/full/319/7201/45 (2335 words)

	Diurnal variations of the dominant cycle length of chronic atrial fibrillation -- Meurling et al. 280 (1): 401 -- AJP - ...
		Diurnal fluctuations in atrial refractoriness have been little studied, but it is well recognized that autonomic tone has
		Diurnal fluctuations in human ventricular and atrial refractoriness.
		Diurnal variation in left ventricular function: a study of patients with myocardial ischaemia, syndrome X, and of normal controls.
	ajpheart.physiology.org /cgi/content/full/280/1/H401 (3674 words)

	SADnet- The Seasonal Affective Disorder Network (Site not responding. Last check: 2007-10-22)
		Diurnal and seasonal rhythms of melatonin, cortisol and testosterone in interior Alaska.
		The diurnal variations in the secretory patterns of melatonin, cortisol and testosterone were studied in a Fairbanks, Alaska population who were unadapted to the extreme light variations of the North.
		Statistically significant variations in hormonal levels were found in both diurnal and seasonal rhythms.
	www.milliron.net /sad (399 words)

	diurnal. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
		Relating to or occurring in a 24-hour period; daily.
		Occurring or active during the daytime rather than at night: diurnal animals.
		Botany Opening during daylight hours and closing at night.
	www.bartleby.com /61/2/D0300200.html (109 words)

	Dramatic diurnal variation in the concentration of the human trefoil peptide TFF2 in gastric juice -- Semple et al. 48 ...
		Dramatic diurnal variation in the concentration of the human trefoil peptide TFF2 in gastric juice -- Semple et al.
		Dramatic diurnal variation in the concentration of the human trefoil peptide TFF2 in gastric juice
		There was a dramatic diurnal variation in the concentration of TFF2.
	gut.bmjjournals.com /cgi/content/abstract/48/5/648 (405 words)

	COARE (Site not responding. Last check: 2007-10-22)
		Because of the relatively calm winds which prevail over the western Pacific warm pool, the diurnal cycle of temperature in the near-surface layer of the ocean is often quite pronounced.
		Under calm weather conditions, SST was observed to exceed 33.2°C; this was associated with a diurnal warming of more than 3°C in the top 1 m of the ocean (Fig.
		Precipitation influenced the diurnal cycle by trapping heat in the near surface region.
	www.soest.hawaii.edu /COARE/abstracts/pdiurnal4.html (247 words)

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