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Atmospheric Potential Gradient Anomalies
Physics, 1936A series of observations of the atmospheric potential gradient have been made over a period of six years and have been correlated with positions of the sun-spots and weather conditions. Maxima or minima of the potential gradient and storms appear to recur at intervals of approximately 27 days and at the same time that sun-spots appear near a plane ...
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Extended Potential-Gradient Architecture of a Phenylazomethine Dendrimer
Organic Letters, 2013A dendritic nanoshell based on rigid phenylazomethine units was synthesized up to fifth generation around a zinc porphyrin core. Due to the finely organized sparse architecture, accessibility to the core can be discriminated by the size of the molecules and ionic species.
Takane Imaoka +2 more
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Absence of Intracellular Potential Gradients in Amphibian Embryos
Nature New Biology, 1972THE developmental biology literature contains many references to the existence of bioelectric potential gradients in embryonic and regenerating systems1–5 and, because the polarity of regenerating hydroids and planarians can be altered by application of electric fields6–8, a role in the control of spatial patterns of cellular organization has been ...
C, Slack, L, Wolpert
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Atrial gradient as a potential predictor of atrial fibrillation
Heart Rhythm, 2005We tested the utility and comparability of the atrial gradient and atrial ERP as early markers of electrical remodeling and a propensity to atrial fibrillation (AF).Pacing at physiologic rates from the left atrium alters the atrial gradient and is associated with atrial tachyarrhythmias.
Parag, Chandra +5 more
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Maxima of potential gradient at Apia
Terrestrial Magnetism and Atmospheric Electricity, 1936The average values of potential gradient of the atmosphere between successive hourly periods 0h–1h, 1h–2h, 23h–24h, on complete days free from negative potential during the period 1924–34 have been tabulated and the means of these average values for each year are given in Table 1. The departures of the hourly means from the daily mean have been plotted
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Gradients of Antigen Expression and Developmental Potential in Hematopoiesis
Annals of the New York Academy of Sciences, 2007Abstract: Prospective isolation of hematopoietic stem and progenitor cell subsets depends upon the premise that expression of combinations of surface antigens reflects developmental potential. During the process of differentiation, however, the loss of antigens associated with stem cells and the concomitant gain of those associated with progenitor ...
Jae-Yong, Kwak +2 more
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Orographic effect on potential gradient
pure and applied geophysics, 1984Potential gradients were measured in the valley of the Simhachalam hills and near the top. They were found to be higher at the top than in the valley, where they increased in the forenoon. It was the reverse at the top of the hills. The valley winds were found to play an important role in the variation of potential gradient.
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Mapping of Potential Gradients within the Electrospray Emitter
Analytical Chemistry, 2003A novel electrochemical probe has been designed, built, and used to characterize the distribution in solution potential within the metal capillary and Taylor cone of the electrospray (ES) device. The measurement system consists of three electrodes-a counter electrode held at highly negative potential that serves as the cathode, and two anodes ...
Yan, Li +2 more
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Potential gradient as a predictor of fog
Although fog is an important weather phenomenon, it remains difficult to predict using traditional methods. This could be improved by new observations-based nowcasting systems. It has long been understood that fog affects measurements of atmospheric electricity.Caleb Miller +3 more
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A NOTE ON ELECTRICAL POTENTIAL AND THE PHYSIOLOGICAL GRADIENT
Science, 1932H, Diack, C E, Smith
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