Academic literature on the topic 'Seasonal variation'

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Journal articles on the topic "Seasonal variation"

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Khatoon, Dr Tabassum, Dr Anoop Kumar Verma, and Dr Alok Kumar. "Seasonal Variation of Childhood Poisoning." International Journal of Scientific Research 3, no. 8 (2012): 180–82. http://dx.doi.org/10.15373/22778179/august2014/52.

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Olson, Amy L., Jeffrey J. Swigris, Ganesh Raghu, and Kevin K. Brown. "Seasonal Variation." Chest 136, no. 1 (2009): 16–22. http://dx.doi.org/10.1378/chest.08-0703.

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Wilson, Leah C., James L. Goodson, and Marcy A. Kingsbury. "Seasonal Variation in Group Size Is Related to Seasonal Variation in Neuropeptide Receptor Density." Brain, Behavior and Evolution 88, no. 2 (2016): 111–26. http://dx.doi.org/10.1159/000448372.

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In many species, seasonal variation in grouping behavior is widespread, with shifts towards territoriality in the breeding season and grouping in the winter. Compared to the hormonal and neural mechanisms of seasonal territorial aggression, the mechanisms that promote seasonal grouping have received little attention. We collected brains in spring and winter from wild-caught males of two species of emberizid sparrows that seasonally flock (the field sparrow, Spizella pusilla, and the dark-eyed junco, Junco hyemalis) and two species that do not seasonally flock (the song sparrow, Melospiza melod
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Britton, Andrew. "Seasonal Patterns in the British Economy." National Institute Economic Review 117 (August 1986): 33–42. http://dx.doi.org/10.1177/002795018611700105.

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Applied macroeconomists commonly regard the seasonal variations of the economy as a hindrance rather than a help to the understanding of behaviour. Thus both in commenting informally on economic developments and in the more formal tasks of modelbuilding and forecasting seasonally-adjusted data are almost invariably used in preference to raw data when both are published. The nature of the patterns displayed by seasonal variation is very little discussed. One purpose of this note is simply to describe seasonal variation as it is estimated in some of the official data series, providing some table
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Polich, John, and Mark W. Geisler. "P300 seasonal variation." Biological Psychology 32, no. 2-3 (1991): 173–79. http://dx.doi.org/10.1016/0301-0511(91)90008-5.

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Zhou, Maosheng, Xin Liu, Jiajia Yuan, et al. "Seasonal Variation of GPS-Derived the Principal Ocean Tidal Constituents’ Loading Displacement Parameters Based on Moving Harmonic Analysis in Hong Kong." Remote Sensing 13, no. 2 (2021): 279. http://dx.doi.org/10.3390/rs13020279.

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The classical harmonic analysis (CHA) method only can be used to obtain the harmonic constants (amplitude and phase) of ocean tide loading displacement (OTLD). In fact, there are significant seasonal variations in the harmonic constants of OTLD. A moving harmonic analysis (MHA) method is proposed, which can effectively capture the seasonal variation of OTLD parameters. Based on 5 years of kinematic coordinate time series in direction U of six Global Positioning System (GPS) stations in Hong Kong, the MHA method is used to explore the seasonal variation of the OTLD parameters of the 6 principal
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Dr., Smita Jain. "Identifying the Most Critical Season for Variation in Water Quality by using Principal Component Analysis." International Journal of Trend in Scientific Research and Development 1, no. 6 (2017): 818–20. https://doi.org/10.31142/ijtsrd2511.

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Multivariate statistical techniques, including Seasonal Indices and principal component analysis PCA were used to evaluate the seasonal variations and to interpret a critical season which is responsible for the variation in water quality data sets collected from the Wular Lake in Kashmir. The data sets, which contained 10 parameters for the four seasons Winter, Spring, Summer and Autumn were collected during a year monitoring program at 5 different sites along the Lake. Variation were found for the four season by Seasonal Indices and by the PCA the season spring is highly processed and value a
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Rozbicka, Katarzyna, Grzegorz Majewski, and Tomasz Rozbicki. "Seasonal variation of air pollution in Warsaw conurbation." Meteorologische Zeitschrift 23, no. 2 (2014): 175–79. http://dx.doi.org/10.1127/0941-2948/2014/0453.

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Wang, Daosheng, Haidong Pan, Guangzhen Jin, and Xianqing Lv. "Seasonal variation of the principal tidal constituents in the Bohai Sea." Ocean Science 16, no. 1 (2020): 1–14. http://dx.doi.org/10.5194/os-16-1-2020.

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Abstract. The seasonal variation of tides plays a significant role in water level changes in coastal regions. In this study, seasonal variations of four principal tidal constituents, M2, S2, K1, and O1, in the Bohai Sea, China, were studied by applying an enhanced harmonic analysis method to two time series: 1-year sea level observations at a mooring station (named E2) located in the western Bohai Sea and 17-year sea level observations at Dalian. At E2, the M2 amplitude and phase lag have annual frequencies, with large values in summer and small values in winter, while the frequencies of S2 an
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Alstadhaug, KB, R. Salvesen, and SI Bekkelund. "Seasonal Variation in Migraine." Cephalalgia 25, no. 10 (2005): 811–16. http://dx.doi.org/10.1111/j.1468-2982.2005.01018.x.

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Our group has previously shown that migraineurs, as opposed to individuals with other headaches, are more likely to have headache during the bright arctic summer than during the polar night season. We set out to investigate the impact of seasonal light exposure in migraine with and without aura. We performed a questionnaire-based study of 169 female volunteer migraineurs in an arctic area where light conditions during summer and winter seasons are extreme. We included 98 patients with migraine with aura (MA) and 71 with migraine without aura (MoA). One hundred and seven patients (63%) reported
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Dissertations / Theses on the topic "Seasonal variation"

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Price, Myra Ann. "Seasonal Variation in Runoff Curve Number." Thesis, The University of Arizona, 1998. http://hdl.handle.net/10150/225411.

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The seasonal variation in rainfall - runoff response is investigated for about 300 small watersheds throughout the United States. Data from USDA research watersheds were used to define runoff Curve Number for ordered data sets by months. Three major patterns of cyclic variation are found and investigated: 1) distinct and well - defined seasonal variations as typified by forested watersheds in heavy rainfall zones; 2) mildly cyclic variation found typically in meadows and grasslands, and 3) non - cyclic or unidentifiable patterns, including those with insufficient seasonal data. The only patter
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Morken, Gunnar. "Seasonal Variation of Human Mood and Behavior." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Medicine, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-326.

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<p>Seasonal variations of mood, behavior and physiology have been of increasing interest. At least two different seasonal rhythms seem to exist: Descriptions of Seasonal Affective Disorder (SAD) with increased weight, increased sleep and fatigue during winter have attracted attention in academic psychiatry and in the general public the last two decades. In addition to such a difference in mood, weight and sleep between summer and winter, many studies describe a spring and fall increase in frequency of suicides and of admissions to hospital for mood disorders. In searching for a possible etiolo
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Postuma, Ronald B. "Seasonal variation in risk of Parkinson's disease." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99199.

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Parkinson's disease (PD) is a common neurodegenerative condition characterized by progressive motor, speech, swallowing, and gait difficulties. Risk factors for PD include male sex, pesticide exposure, head trauma, and rural living, but these account for only a small amount of the variation in risk. Recent studies suggest that for many neurological diseases, people born at a certain time of year are at higher risk of developing the disease. Small-scale studies have also suggested that persons born in the spring may be at higher risk of developing PD late in life. We examined the birth dates of
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Corry, R. A. "Modelling the seasonal variation of the Florida current." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:644edc47-15b5-491f-a2a3-a2c25c864791.

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The linear response of a two layer ocean model to a periodic wind stress curl in the presence of bottom topography has been investigated. For periods much less than the time taken for the wind generated baroclinic Rossby waves to pass over the topography (i.e. 'short' periods), the ocean response is primarily that for a homogeneous ocean and thus strongly modified by topography. For periods much longer than this time (i.e. 'long' periods), the Rossby waves compensate for the effect of topography and the non-topographic Sverdrup balance holds. For the Atlantic at 25°N, the long period limit is
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Bolohan, Noah. "Seasonal Variation in a Predator-Predator-Prey Model." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40899.

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Seasonal shifts in predation habits, from a generalist in the summer to a specialist in the winter, have been documented for the great horned owl (Bulbo virginialis) in the boreal forest. This shift occurs largely due to varying prey availability. There is little study of this switching behaviour in the current literature. Since season length is predicted to change under future climate scenarios, it is important to understand resulting effects on species dynamics. Previous work has been done on a two-species seasonal model for the great horned owl and its focal prey, the snowshoe hare (Lepus a
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Ofstad, Endre. "Seasonal Variation in Site Fidelity of Moose (Alces alces)." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21418.

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Species across many taxa display site fidelity, the tendency to return to previous used areas, particularly during important periods of life, such as at mating and reproduction. In general, it is expected that familiarity to an area is beneficial, and the ability to return to the same area for specific life history events should therefore have a fitness benefit. Efficient wildlife management relies on good knowledge about the tendency of the target species to display site fidelity. Here, I investigated to what extent moose show seasonal variation in site fidelity and to what extent site fideli
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Stilwell, W. B. "Origin and seasonal variation of bacterial contamination of milk." Thesis, University of Canterbury. Biological Sciences, 2003. http://hdl.handle.net/10092/6482.

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Type, origin and seasonal variation of psychrotrophic bacteria contaminating milk from a Christchurch milk-processing factory was investigated. Bacteria were monitored in bottled milk over ten days at 7°C. Bacillus licheniformis, B. subtilis, Pseudomonas fluorescens and Ps. putida were identified, with populations exceeding 5x105 CFU/ml after five days. Origin of the bacterial contamination was determined by isolating from milk at various points on the processing line including newly pasteurised, storage tank and pre-filler, as well as filler and bottled milk. Environmental isolations were m
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Dantas, Whitney Thomas Edward. "Exploring the Links Between Seasonal Variation and Spider Foraging." UKnowledge, 2014. http://uknowledge.uky.edu/entomology_etds/9.

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According to optimal foraging theory, generalist predators, such as spiders, are thought to feed indiscriminately on prey according to its availability, especially when food is scarce. In contrast, generalists can display selective feeding decisions under regimes of high prey abundance, but few studies have tracked changes in prey choice on a seasonal basis under open field conditions. Additionally, adaptations to surviving winter have been largely ignored in the research of foraging behavior. To elucidate this, I monitored prey availability and collected common forest-dwelling wolf spiders fo
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Kitson, Sarah R. "Malaclemys terrapin Hatchlings: Variation in Seasonal Emergence." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479156414322192.

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Matheron, Mike, and Joe Matejka. "Seasonal Variation in Susceptibility of Citrus Rootstocks to Phytophthora." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/215689.

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Phytophthora parasitica and P. citrophthora are routinely recovered from diseased citrus groves in Arizona. Stem sections were collected monthly from Citrus macrophylla, rough lemon, .sour orange, Cleopatra mandarin, Troyer citrange and Citrus volkameriana. Stem pieces were wounded, inoculated with mycelium of P. parasitica or P. citrophthora, then incubated for 7 days at 21° C in moist chambers. For all tested rootstocks, the smallest cankers were produced on tissue collected in December, January and February, the winter dormancy period for citrus in Arizona. The period of higher susceptibili
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Books on the topic "Seasonal variation"

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Hsu, Sheng-i. Seasonal variation of the Asian monsoon. Chinese University, 1992.

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Netzer, Daniel. Seasonal variation in hybrid poplar tolerance to glyphosate. North Central Forest Experiment Station, Forest Service--U.S. Dept. of Agriculture, 1992.

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R, Holton James, Rosenlof Karen H, and United States. National Aeronautics and Space Administration., eds. Seasonal variation of mass transport across the tropopause. National Aeronautics and Space Administration, 1996.

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Edward, Hansen, and North Central Forest Experiment Station (Saint Paul, Minn.), eds. Seasonal variation in hybrid poplar tolerance to glyphosate. North Central Forest Experiment Station, Forest Service--U.S. Dept. of Agriculture, 1992.

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R, Holton James, Rosenlof Karen H, and United States. National Aeronautics and Space Administration., eds. Seasonal variation of mass transport across the tropopause. National Aeronautics and Space Administration, 1996.

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E, Phelps John, and North Central Forest Experiment Station (Saint Paul, Minn.), eds. Northern hardwood notes: Variation in seasonal moisture content. U.S. Dept. of Agriculture], North Central Forest Experiment Station, 1987.

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Beaulieu, J. Joseph. Why do countries and industries with large seasonal cycles also have large business cycles? National Bureau of Economic Research, 1991.

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Samson, Martin. Seasonal variation of pavement strength based on Benkelman beam rebounds. Canadian Strategic Highway Research Program, Transportation Association of Canada, 1995.

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Greninger, Nevin. Seasonal variation in respirable dust concentration in U.S. coal mines. U.S. Dept. of the Interior, Bureau of Mines, 1986.

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Guillemette, Roger. Seasonality of labour markets: Comparison of Canada, the U.S. and the Provinces. Applied Research Branch, Strategic Policy, Human Resources Development Canada, 2000.

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Book chapters on the topic "Seasonal variation"

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Gooch, Jan W. "Seasonal Variation." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_15369.

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Balestra, Pietro. "Seasonal Variation." In The New Palgrave Dictionary of Economics. Palgrave Macmillan UK, 1987. http://dx.doi.org/10.1057/978-1-349-95121-5_1613-1.

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Balestra, Pietro. "Seasonal Variation." In The New Palgrave Dictionary of Economics. Palgrave Macmillan UK, 2018. http://dx.doi.org/10.1057/978-1-349-95189-5_1613.

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Balestra, Pietro. "Seasonal Variation." In Econometrics. Palgrave Macmillan UK, 1990. http://dx.doi.org/10.1007/978-1-349-20570-7_28.

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Levine, Richard J. "Seasonal Variation in Human Semen Quality." In Advances in Experimental Medicine and Biology. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-5913-5_8.

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Sharma, Suresh D., Arpan R. Bhagat, and Salvatore Parisi. "Seasonal Variation and Biochemical Composition of Fishmeal." In SpringerBriefs in Molecular Science. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14651-1_1.

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Salhi, Ouassila, Mohammed Diouri, Abdelmoula Ben-tayeb, Ibtissam Marsli, Sara El Hassani, and Mohammed Ammine Moussaoui. "Seasonal Variation of Atmospheric Absorptivity in Ouarzazate." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6223-3_81.

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Ma, Yonghua, Zhimin Zhang, and Guoliang Yang. "Analysis of Temperature Field Characteristics in Seasonal Frost Region Airport Pavement Subgrade." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_5.

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AbstractTo study the variation patterns of the temperature field in seasonal frost region airport subgrades, this research establishes a heat conduction equation with phase change latent heat as an internal heat source. During the freezing and thawing processes in seasonal frost regions, a numerical simulation model of airport subgrades is developed, with thermal characteristic parameters of the soil as research variables. The study focuses on investigating the characteristic changes in the temperature field of seasonal frost region airport subgrades, ultimately obtaining the variation pattern
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Pretzlaff, Iris, and Kathrin H. Dausmann. "Impact of Climatic Variation on the Hibernation Physiology of Muscardinus avellanarius." In Living in a Seasonal World. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28678-0_8.

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Blades, Luke, Teresa McGrath, Juliana Early, and Andrew Harris. "Examining How Geographical Location Impacts Fuel Cell Electric Bus Operational Energy Consumption and Carbon Emissions." In Lecture Notes in Mobility. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-89444-2_21.

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Abstract This paper examines the impact of geographical location on the energy consumption of double deck fuel cell electric buses operating in two UK cities. By considering seasonal variation in ambient temperature, the implications on operational carbon emissions were investigated. Using a MATLAB/Simulink model the total energy demand of a vehicle operating on the UK Bus Cycle was simulated. Results show that the range of a fuel cell electric bus can reduce by 18.3% due to seasonal and geographical ambient temperature variations. The carbon emissions associated with refuelling can change by
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Conference papers on the topic "Seasonal variation"

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Song, Fengmei. "Predicting the Effect of Soil Seasonal Change on Stress Corrosion Cracking Susceptibility of Buried Pipelines at High pH." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10066.

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Abstract Soil seasonal change is believed to be one of the major factors that contribute to pipeline high pH stress corrosion cracking (SCC), although the specific role and mechanisms of the soil seasonal change in the pipeline high pH SCC susceptibility are not clearly understood. This study is aimed at investigating this role and the mechanisms of the soil seasonal change through mathematical modeling. The temporal and spatial variation, with soil seasonal change, of the solution chemistry and the pipe steel potential and corrosion rate in a coating disbonded region is explored. With the pip
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Fieltsch, Wolfgang, Ernesto Gudino, Fation Shahinas, and Travis Wymenga. "Effects of Seasonal Variation on AC Interference and Mitigation Design." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11231.

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Abstract In Canada and in the northern portions of the United States, soil resistivities increase rapidly by up to several orders of magnitude once water in the soil freezes in the winter. Frost-penetration can vary from centimeters up to a meter or more in depth. Although it is standard industry practice in the electrical industry to consider seasonal variations in soil resistivity when modeling grounding facilities for substations and generating stations, this is often not considered in AC interference studies related to pipelines. The effect on AC induction is expected to be minimal, as thi
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Salhi, Ouassila, Sara El Hassani, Ahmed Mazouji, Mohammed Diouri, and Mohammed Amine Moussaoui. "Seasonal Variation of Aerosol Types and Absorption in Murcia: An AERONET-Based Study." In 2025 5th International Conference on Innovative Research in Applied Science, Engineering and Technology (IRASET). IEEE, 2025. https://doi.org/10.1109/iraset64571.2025.11008076.

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Zhang, Xiao Wei, Bing Shen, and Heng Zhang. "An Improved Seasonal Variation Model." In 2008 Fourth International Conference on Natural Computation. IEEE, 2008. http://dx.doi.org/10.1109/icnc.2008.291.

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Gaisser, Thomas, and Stef Verpoest. "Seasonal variation of atmospheric muons." In 37th International Cosmic Ray Conference. Sissa Medialab, 2021. http://dx.doi.org/10.22323/1.395.1202.

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Miller, RF, HE Evans, SG Edwards, and PD Walzer. "Seasonal Variation in Mortality Rates inPneumocystisPneumonia." In American Thoracic Society 2009 International Conference, May 15-20, 2009 • San Diego, California. American Thoracic Society, 2009. http://dx.doi.org/10.1164/ajrccm-conference.2009.179.1_meetingabstracts.a5536.

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Jeong, Jongtae, and Wondea Jung. "The Influence of Seasonal Characteristics on the Accident Consequence Analysis." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22384.

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In order to examine the influence of seasonal characteristics on accident consequences, we defined a limited number of basic spectra based on the relative importance of source term release parameters and meteorological conditions on offsite health effects and economic impacts. We then investigated the variation in numbers and frequency of early health effects and economic impacts resulting from the severe accidents of the YGN 3&amp;4 nuclear power plants from spectrum to spectrum by using MACCS code. These investigations were for meteorological conditions defined as typical on an annual basis.
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Kaloka Prabotosari, Sri, Saipul Hamdi, Agus Nuryanto, et al. "Seasonal variation of aerosol over Bandung, Indonesia." In Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, edited by Upendra N. Singh, Toshikasu Itabe, and Nobuo Sugimoto. SPIE, 2001. http://dx.doi.org/10.1117/12.417087.

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Hossain, Mustaque, Stefan Romanoschi, and Andrew J. Gisi. "Seasonal and Spatial Variation of Subgrade Response." In Geo-Denver 2000. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40509(286)10.

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Wiebusch, Christopher, Patrick Heix, Serap Tilav, and Marit Zöcklein. "Seasonal Variation of Atmospheric Neutrinos in IceCube." In 36th International Cosmic Ray Conference. Sissa Medialab, 2019. http://dx.doi.org/10.22323/1.358.0465.

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Reports on the topic "Seasonal variation"

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Netzer, Daniel, and Edward Hansen. Seasonal variation in hybrid poplar tolerance to glyphosate. U.S. Department of Agriculture, Forest Service, North Central Research Station, 1992. http://dx.doi.org/10.2737/nc-rp-311.

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Gauger, J. R., and R. G. Drexler. ELF Communications System Terminal Grounds Seasonal Variation Pilot Study. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada205900.

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Baker, Christopher, Amanda Barker, Thomas Douglas, Stacey Doherty, and Robyn Barbato. Seasonal variation in near-surface seasonally thawed active layer and permafrost soil microbial communities. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48754.

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Understanding how soil microbes respond to permafrost thaw is critical to predicting the implications of climate change for soil processes. However, our knowledge of microbial responses to warming is mainly based on laboratory thaw experiments, and field sampling in warmer months when sites are more accessible. In this study, we sampled a depth profile through seasonally thawed active layer and permafrost in the Imnavait Creek Watershed, Alaska, USA over the growing season from summer to late fall. Amplicon sequencing showed that bacterial and fungal communities differed in composition across
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Jaradat, Ihab, Sarah Al Sharie, Raed Ennab, and Sohaib Al-Omari. Seasonal Variation Effects on Perforated Peptic Ulcer - A systematic Review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2021. http://dx.doi.org/10.37766/inplasy2021.1.0096.

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Baker, Ashley. Annual and Seasonal Variation in Hydrologic Performance of Ecoroofs of Multiple Depths, Portland, OR. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.7147.

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Marwoto, Bambang. Horizontal Anisotropy and Seasonal Variation of Acoustic Fluctuations Observed During the 20102011 Philippine Sea Experiment. Defense Technical Information Center, 2015. http://dx.doi.org/10.21236/ad1009159.

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Musur, M. A., and C. D. Beggan. Seasonal and Solar Cycle Variation of Schumann Resonance Intensity and Frequency at Eskdalemuir Observatory, UK. Balkan, Black sea and Caspian sea Regional Network for Space Weather Studies, 2019. http://dx.doi.org/10.31401/sungeo.2019.01.11.

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Chen, J. M. Optically-Based Methods for Measuring Seasonal Variation of Leaf area Index in Boreal Conifer Stands. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/218392.

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Paquet, Peter. Seasonal variation in cytokinin activity and content in two species of dwarf mistletoes and their hosts. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.864.

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Nathan, Harms, and Cronin James. Variability in weed biological control : effects of foliar nitrogen on larval development and dispersal of the alligatorweed flea beetle, Agasicles hygrophila. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41886.

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Host quality can have dramatic effects on performance of biological control agents but its importance is understudied. We used a combination of field measurements and laboratory experiments to determine the range of foliar nitrogen (FN) that larvae of the alligatorweed flea beetle (Agasicles hygrophila) are exposed to in the field and its importance to larval development and dispersal. Seasonal variability in FN was assessed at field sites spanning southern to northern Louisiana every 2–3 weeks during the growing season for four years. In a series of laboratory experiments, alligatorweed FN wa
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