نتائج البحث

A rapid harmonic detection method for grid-connected photovoltaic when three-phase voltage is unbalanced.

• Authors : Wu, Tiezhou¹ (AUTHOR) ; Wang, An¹ (AUTHOR); Xu, Yawen¹ (AUTHOR)

Subjects: *Photovoltaic power generation; Voltage; Reactive power

• Source: International Journal of Low Carbon Technologies. Sep2021, Vol. 16 Issue 3, p822-830. 9p. 3 Diagrams, 1 Chart, 6 Graphs.

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A note on the relationship between the quadratic mean stand diameter and harmonic mean basal area under size-biased distribution theory.

• Authors : Gove, Jeffrey H.

Subjects: *Forests & forestry; *Natural resources; *Forest ecology

• Source: Canadian Journal of Forest Research. Aug2003, Vol. 33 Issue 8, p1587-1590. 4p.

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Temporal evolution of sulfur dioxide and nitrogen oxides in the city of Volos, Greece.

• Authors : Papaioannou, A. B.¹; Viras, L. G.²; Nastos, P. T.³

Subjects: *Air pollution; *Nitrogen oxides; *Sulfur dioxideGulf of Volos (Greece); Greece

• Source: Environmental Monitoring & Assessment. Feb2010, Vol. 161 Issue 1-4, p485-494. 10p. 2 Charts, 5 Graphs, 1 Map.

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Calibration and Validation of an Empirical Dissolved Oxygen Model.

• Authors : Abdul-Aziz, Omar I.¹ ; Wilson, Bruce N.²; Gulliver, John S.³

Subjects: *Dissolved oxygen in water; *Watersheds; *Health risk assessmentMinnesota

• Source: Journal of Environmental Engineering. Jul2007, Vol. 133 Issue 7, p698-710. 13p. 3 Charts, 7 Graphs, 1 Map.

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Long Period Benzene Measurements in Urban Atmosphere.

• Authors : Bragatto, P. A.¹; Cordiner, S.² ; Feola, M.³

Subjects: *Benzene; *Air quality; *Environmental quality

• Source: Environmental Monitoring & Assessment. Nov2000, Vol. 65 Issue 1/2, p99-107. 9p.

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Modeling and forecasting of monthly PM2.5 emission of Paris by periodogram-based time series methodology.

• Authors : Akdi, Yılmaz¹ (AUTHOR); Gölveren, Elif² (AUTHOR); Ünlü, Kamil Demirberk³ (AUTHOR)

Subjects: *Particulate matter; ForecastingParis (France)

• Source: Environmental Monitoring & Assessment. Oct2021, Vol. 193 Issue 10, p1-15. 15p.

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Bianchi Type V Barotropic Perfect Fluid Cosmological Model in Lyra Geometry.

• Authors : Raj Bali¹ ; Chandnani, Naresh K.²

Subjects: *Energy conservation; Harmonic analysis (Mathematics); Wigner distribution

• Source: International Journal of Theoretical Physics. May2009, Vol. 48 Issue 5, p1523-1533. 11p.

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Linking the northern hemisphere sea-ice reduction trend and the quasi-decadal arctic sea-ice oscillation.

• Authors : Wang, J¹ ; Ikeda, M²; Zhang, S³

Subjects: *Sea ice; Oscillations; Wavelets (Mathematics)Northern Hemisphere; Arctic Ocean

• Source: Climate Dynamics. Mar2005, Vol. 24 Issue 2/3, p115-130. 16p.

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Clonal Fitness of Attached Bacteria Predicted by Analog Modeling.

• Authors : Murray, J. L. S.; Jumars, Peter A.

Subjects: *Bacteria; *Diffusion; *Microbial ecology

• Source: BioScience. Apr2002, Vol. 52 Issue 4, p343. 13p. 1 Black and White Photograph, 5 Diagrams, 1 Graph.

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New Products.

Subjects: Harmonic analyzers; Voltmeters; Scanning systemsWaters Associates (Company) ; Gelman Instrument Co.

• Source: BioScience. Jan1968, Vol. 18 Issue 1, p67-68. 2p.

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