Results 31 to 40 of about 4,299 (150)

Optimization of PEDOT: PSS thin film for organic solar cell application [PDF]

open access: yes, 2014
As a clean and renewable energy source, the development of the organics solar cells is very promising due to the inorganic solar cell inconvenient production process and material shortness.
Abdul Talib, Yuraimy Yakimin
core  

Scenedesmus biomass productivity and nutrient removal from wet market wastewater, a bio-kinetic study [PDF]

open access: yes, 2018
The current study aims to investigate the production of microalgae biomass as a function for different wet market wastewater ratios (10, 25, 50, 75 and 100%) and Scenedesmus sp.
Abdul Latiff, Muhammad Abu Bakar   +10 more
core   +1 more source

Andamento normale della ionosfera a Roma

open access: yesAnnals of Geophysics, 2011
Vengono presentate formule, curve e tabelle per la<br />previsione dell'andamento normale delle principali caratteristiche ionosferiche<br />nella zona di Roma, dedotte dai dati del periodo 1948-1970 dell'Osservatorio<br />ionosf&eacute;rico di Roma dell'Istituto Nazionale di Geofisica.
openaire   +4 more sources

Total ionospheric electron content from GPS measurements over the Brazilian region

open access: yesGeofísica Internacional, 2000
El principal propósito del sistema GPS es el de determinar la posición y la velocidad de un objeto fijo, o móvil, sobre la superficie terrestre o próximo de ella, utilizando señales de 24 satélites en órbita terrestre. Debido al efecto de la ionosfera en
I. J. Kantor   +2 more
doaj   +1 more source

Jumlah kandungan elektron sewaktu gangguan ionosfera bergerak di Parit Raja, Johor [PDF]

open access: yes, 2010
Travelling ionospheric disturbance (TID) is a phenomenon caused by solar activity and TID strength varies by locations, especially in equatorial regions.
Ahmad Faizal Mohd Zain,   +5 more
core  

Data gaps and trend bias relevant to space climate studies

open access: yesDiscover Space
Long-term variations in the upper atmosphere, and particularly in the ionosphere, are a key topic in space climate studies. Their relevance lies not only in their connection with the increasing concentration of greenhouse gases of anthropogenic origin ...
Ana G. Elias   +5 more
doaj   +1 more source

Trazado de rayos para señales de satélites GPS: aproximación cuasi-longitudinal

open access: yesGeofísica Internacional, 1992
En este trabajo se realiza un trazado de rayos en la ionosfera terrestre para las señales emitidas por los satélites del Sistema de Posicionamiento Global (GPS), cuyas frecuencias de transmisión son Ll = 1515 MHz y L2 = 1228 MHz.
G. A. Mansilla   +4 more
doaj   +1 more source

Review of Polarimetric and ionospheric effects on Sar, Insar and Palsar systems: requirements and correction methods [PDF]

open access: yes, 2014
Este estudio proporciona una actualización de las herramientas polarimétricas que se utilizan actualmente para la extracción óptima de la información a partir de imágenes de Radares de Apertura Sintética, SAR, de imágenes Interferométricas de SAR, InSAR ...
Rios, Victor Hugo
core   +1 more source

Métrica en Arqueología. Utilización de topografía por satélite [PDF]

open access: yes, 2003
The main purpuse of these papers is to offer to the reader, generally not turned in this field, a set of basic knowledge on Global Positioning System (GPS) and some examples of the applications of this tool in the field of the Archaeology.
Soriano Castro, Patricio José
core   +1 more source

Identificação do perfil da ionosfera utilizando lógica nebulosa: Parte I

open access: yesTEMA (São Carlos), 2014
A ionossonda digital e um dos instrumentos que mede a densidade eletronica da baixa ionosfera, atraves de radio frequencia, obtendo como resultado espectros de frequencia em funcao da altura chamados ionogramas. A ionosfera pode ser analisada estudando-se alguns parâmetros criticos que indicam a altura da base da camada F(h'F), a frequencia com o pico ...
Pillat, V.G., Guimarães, L.N.F.
openaire   +4 more sources

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