total electron content
Temporal-Spatial Variation of Global GPS-Derived Total Electron Content, 1999-2013.
... vertical total electron content (VTEC) from GPS-based measurements represented that the global maximum TEC appears near the equator, and the diurnal variation of TEC peaks about 14:00 LT, decaying to ...
21
Case study on total electron content enhancements at low latitudes during low geomagnetic activities before the storms
... It is well known that, during geomagnetic storms, large and global dramatic disturbances occur in the geospace due to enhanced dissipation of energy of solar winds and/or inter- planetary magnetic fields, driving the ...
11
Spatial and temporal variation of total electron content as revealed by principal component analysis
... global total electron content (TEC) data derived from the assimilated thermosphere–ionosphere electrodynamics general circulation model are analyzed us- ing empirical orthogonal function (EOF) ...
9
Features of annual and semiannual variations derived from the global ionospheric maps of total electron content
... 1983) compared to the small annual component for NmF2. In recent years, a database of TEC in the ionosphere and plasmasphere, derived from a worldwide network of global positioning system (GPS) observations, has been ...
15
Observations in equatorial anomaly region of total electron content enhancements and depletions
... (1986) and Watanabe and Oya (1986) have re- ported localized regions of plasma density enhancements co- occurring with the plasma density depletions in the night- time equatorial F regio[r] ...
8
Empirical models of Total Electron Content based on functional fitting over Taiwan during geomagnetic quiet condition
... The functional fitting model using daily EUV is the most accurate with 9.2 TECu of root mean square er- ror (RMS) than the 15-days running median with 10.4 TECu RMS and the model of Inte[r] ...
13
Estimating the contribution from different ionospheric regions to the TEC response to the solar flares using data from the international GPS network
... of total electron content variations to the solar flare, based on data from the international network of two- frequency multichannel receivers of the navigation GPS sys- ...of total shadow, ...
7
Long term ionospheric electron content variations over Delhi
... Ionospheric electron content (IEC) is a parameter which is used to monitor the temporal and spatial behaviour of the ...sunset total electron content and scintillations, emphas- ising ...
10
LONGITUDINAL AND DAY-TO-DAY VARIATIONS OF EQUATORIAL SPREAD F OCCURRENCE FROM OBSERVATIONS OVER SOUTH AMERICA
... and Total Electron Content (TEC) data from several GPS receivers were used to analyse the ionospheric conditions conductive to ionospheric plasma irregularity generation during the solar minimum ...
18
Tomography of the ionospheric electron density with geostatistical inversion
... the electron density distribution of the ionosphere has signifi- cant influence on trans-ionospheric radio signal ...the electron density’s spatial covariance and based on a best linear unbiased esti- mator ...
9
Polyphenols isolated from pomegranate juice (Punica granatum L.): Evaluation of physical-chemical properties by FTIR and quantification of total polyphenols and anthocyanins content / Isolamento de polifenóis do suco da romã (Punica granatum L.): Avaliação das propriedades físico-química por FTIR e quantificação do teor total de polifenóis e antocianinas
... of total polyphenols and anthocyanins content was found to pomegranate juice: ultrapure water, being the water the solvent with higher value of dielectric ...
19
NITROGEN FERTILIZATION OF FALL PANICUM CULTIVARS (Panicum dichotomiflorum Michx.): BIOCHEMICAL AND AGRONOMICAL ASPECTS
... Dry mass of plants were expressed as grams per plant. Plant height corresponded to the distance between soil surface and plant apex. The total number of stalks divided by the number of plants per box was also ...
6
Composting sewage sludge with green waste from tree pruning
... water content, organic carbon, total nitrogen, Cu, As, B, Ba, Cd, Co, Cr, Hg, Mn, Mo, Ni, Pb, Se, Sb Zn, and organic matter content, as well as the values of CEC were determined as mentioned ...
8
Agronomic performance of sweet potato with different potassium fertilization rates
... P content were analyzed using the methodology by Battaglia et ...through content results and the respective dry matters of parts from which it was determined, accumulated amounts of these nutrients in every ...
5
Physiological Changes in the Seeds of Jatropha curcas L. at Different Stages of Fruit Maturity
... As the capsules/seeds mature, a number of measurable chemical changes take place. By correlating the relative amounts of selected biochemical constituents of capsule/seed maturity, a biochemical index of ripeness can be ...
6
Secondary metabolites and antioxidant activity of seed extracts from Solanum elaeagnifolium Cav.
... the total phenolic content, the total flavonoid content and the antioxidant capacity in order to find possible sources for future novel antioxidants in food and pharmaceutical ...The ...
9
EFFECTS OF LEVELS OF NITROGEN AND POTASSIUM ON YIELD AND FRUIT MATURATION OF IRRIGATED GUAVA TREES IN THE SÃO FRANCISCO VALLEY
... seemed to be associated with a slow degradation of ascorbic acid, because there were no differences on contents between stages 2 and 3, and between stages 4 and 5 (Figure 2). This response suggests that fruits harvested ...
5
Changes in phytochemical contents in different parts of Clinacanthus nutans (Burm. f.) lindau due to storage duration
... stages. Total phytochemical content, total flavonoids content and DPPH radical scavenging activities are higher in young plants than in old plants, moreover, all those compounds are higher in ...
8
An overview of preharvest factors influencing mango fruit growth, quality and postharvest behaviour
... Temperature: Simulations have shown that temperature influences processes involved in fruit growth at the sink level, i.e. fruit demand and growth rate. The contribution of temperature to fruit demand can be associated ...
12