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15 articles for “diurnal”
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Research ArticleOpen accessEvery word in the titleEffect of Diurnally Cyclic Temperature on the Performance of a Continuous Mix Anaerobic DigesterAbdel E. Ghaly, Mariam T. Al HattabProblem statement: Concentrated livestock production is a major contributor to environmental problems through the production of large quantity of husks on relatively small land area. Anaerobic digestion represents a valuable means of cover by these husks into methane while reducing manure pollution problems. Methodology: An experimental apparatus, including data acquisition and control system, was developed and used to investigate the … …American Journal of Biochemistry and Biotechnology, Vol. 7, Issue 4 · 19 Jan 2012 · 9,226 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleKINETIC MODELLING OF CONTINUOUS-MIX ANAEROBIC REACTORS OPERATING UNDER DIURNALLY CYCLIC TEMPERATURE ENVIRONMENTE. A. Echiegu, A. E. GhalyA two-culture dynamic model which incorporated the effects of diurnally cyclic temperature was developed and used to predict the dynamic response of anaerobic reactors operated on dairy manure under two diurnally cyclic temperature ranges of 20-40°C and 15-25°C which represent the summer and winter in Nigeria. The digesters were operated at various hydraulic retention times and solid concentrations and some … …American Journal of Biochemistry and Biotechnology, Vol. 10, Issue 2 · 29 Aug 2014 · 7,290 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleCross-Latitudinal, Seasonal and Diurnal Comparisons in Thyroid Hormone Concentrations in Sled DogsKriya L. Dunlap, Arleigh J. Reynolds, Kent R. Refsal et al.Problem Statement: Hypothyroidism has been a common disorder in humans and dogs. Amongst a sundry of functions, the thyroid gland plays a key role in metabolism and consequently, hypothyroidism has been a common diagnosis for a decrease in performance in sled dogs. Research has indicated that a variety of environmental factors influence thyroid hormone production, of which, light exposure, climate, … …American Journal of Animal and Veterinary Sciences, Vol. 3, Issue 4 · 31 Dec 2008 · 7,184 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Diurnal Variation of Dissolved Oxygen in a Eutrophic Polymictic ReservoirAnusha BalangodaTo evaluate the diurnal and seasonal Dissolved Oxygen (DO) variations and their effects on water quality, a comprehensive study was conducted in a eutrophic polymictic reservoir under artificially aerated and non-aerated conditions. The effect of aeration among sampling locations and along the water column of DO and DO saturation and diurnal variation of DO, water temperature, pH and conductivity was … …American Journal of Environmental Sciences, Vol. 13, Issue 1 · 24 Jan 2017 · 8,068 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEvaluation of Temperature Trend In Contaminated Tidal Flat In The Ariake Sea, JapanM. A. Moqsud, Shigenori Hayashi, y. j. Du, Daisuke suetsuguThermal environment of the tidal flat is one of the major parts of the contaminated geo-environment of the Ariake Sea. The activities of marine ecosystem in tidal flats depend strongly on the thermal environment. In order to get a clear idea about the thermal environment of the tidal flats of the Ariake Sea, two study areas, Iida and Higashiyoka tidal … …American Journal of Environmental Sciences, Vol. 2, Issue 3 · 30 Sep 2006 · 6,744 accessesView PDFCite
Research ArticleOpen accessIn the abstractNewcastle Traffic Classification Using Clustering AlgorithmsHamad B Matar, Talal Almutairi, Nayef Z Al-MutairiThe urban road traffic network evolution is complex and varies depend on road type, zoning types and social activities. Typical traffic pattern variation of road network could be examined by considering the daily human travel activities. Thus, factor and cluster analysis is carried out. This paper is a comparative analysis of various Data Mining clustering methods for the grouping of … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 2 · 4 Apr 2020 · 7,214 accessesView PDFCite
Research ArticleOpen accessIn the abstractSPECIE-SPECIFIC OUTCOMES OF WILD RAPTORS ATTENDED AT A WILDLIFE REHABILITATION CENTRE IN CATALONIA (1997-2005)Rafael A. Molina-Lopez, Jordi Casal, Laila DarwichOutcome research of rehabilitation of wild birds of prey and owls are scarcely reported. The aim of this study is to investigate specie-specific outcomes of the rehabilitation practice in wild raptor attended in a wildlife center. A total of 6221 hospitalized wild raptors (3241 Strigiformes; 2980 Falconiformes) admitted at a Wildlife Rehabilitation Centre (WRC) of Catalonia from 1995 to 2007 … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 1 · 3 Jan 2014 · 7,602 accessesView PDFCite
Research ArticleOpen accessIn the abstractBioactive Factors of Colostrum and Human Milk Exhibits a Day-Night VariationNubia Andrade Silva, Adenilda Cristina Honorio-Franca, Fernanda Regina Giachini et al.The aim of this study was to determine the chronobiological variations of cytokines (IFN-γ, TGF-β) and hormones (melatonin and cortisol). The sample was collected from 42 mothers at three stages of maturity-day 3 (colostrum), day 10 (transitional milk) and day 30 (mature milk) postpartum, at two times of day: diurnal (12:00 h) and nocturnal (24:00 h), resulting a total of … …American Journal of Immunology, Vol. 9, Issue 2 · 25 Jun 2013 · 8,186 accessesView PDFCite
Research ArticleOpen accessIn the abstractGeneral Circulation in the Malacca Strait and Andaman Sea: A Numerical Model StudySyamsul Rizal, Peter Damm, Mulyadi A. Wahid et al.In the Andaman Sea and Malacca Strait, as in other parts of the Indian Ocean, the seasonal change of the wind plays a most important role: the south-west (hereafter SW) is monsoon active from June through September and the north-east (hereafter NE) monsoon is active from December through February. During the NE monsoon the winds are directed from the north … …American Journal of Environmental Sciences, Vol. 8, Issue 5 · 11 Aug 2012 · 18,566 accessesView PDFCite
Research ArticleOpen accessIn the abstractV-Band Fade Dynamics Characteristics Analysis in Tropical RegionKhairayu Badron, Ahmad Fadzil Ismail, Jafri Din, Ahmad Tharek Abdul RahmanProblem statement: Satellite operations at V-band in tropical and equatorial regions are constrained as a result of attenuation from rain. Approach: Statistics for 20 consecutive months of V-band terrestrial link signal attenuation measurements in Malaysia were presented in this analysis. Such information was considered very pertinent for Earth-space communication link design and can be used for initial groundwork plan for … …American Journal of Applied Sciences, Vol. 7, Issue 8 · 31 Aug 2010 · 7,802 accessesView PDFCite