Redistribuição da preciptação em seringueira

The present work of research was developed in rubber tree plantation, clone RRIM 600, with 15 years of age, in the region of Jose Bonifácio - SP, situated 21°03′ latitude (s), 49°41′ of longitude (w) and 490 altitude of m, to the sum of the micro watershed of the river Barra Grande. The research had the purpose to evaluate the redistribution of precipitations in hidric year 1995/96, esteem the rain precipitation, effective, throughfall, stemflow and the interception by canopies of the rubber tree. They had been installed the open sky and under the canopy of the trees rain gauges and interception of trunk to quantify (mm) the redistribution of rains. The annual average rain precipitation was of 1053,6 mm, the throughfall of 699,4 mm and stemflow for the 92,3 mm. the interception by canopies and the precipitation effective had resulted in 261,9 and 791,7 mm; being these respectively 24.9% and 75.1% of the rain precipitation in the rubber tree.

The accuracy potential of Galileo E5/E1 pseudoranges for surveying and mapping

In the paper we discuss the potential of the new Galileo signals for pseudorange based surveying and mapping in open areas under optimal reception conditions (open sky scenarios) and suboptimal ones (multipath created by moderate to thick tree coverage). The paper reviews the main features of the Galileo E5 AltBOC and E1 CBOC signals; describes the simulation strategy, models and algorithms to generate realistic E5 and E1 pseudoranges with and without multipath sources; describes the ionosphere modeling strategy, models and algorithms and discusses and presents the expected positioning accuracy and precision results. According to the simulations performed, pseudoranges can be extracted from the Galileo E5 AltBOC signals with tracking errors (1-σ level) ranging from 0.02 m (open sky scenarios) to 0.08 m (tree covered scenarios) whereas for the Galileo E1 CBOC signals the tracking errors range between 0.25 m to 2.00 m respectively. With these tracking errors and with the explicit estimation of the ionosphere parameters, simulations indicate real-time open sky cm-level horizontal positioning precisions and dm-level vertical ones and dm-level accuracies for both the horizontal and vertical position components.

Galileo's surveying potential E5 pseudorange precision

New Galileo signals have great potential for pseudorange-based surveying and mapping in both optimal open-sky conditions and suboptimal under-canopy environments. This article reviews the main features of Galileo's E5 AItBO( and El (BOC signals, describes generation of realistic E5 and El pseudoranges with and without multipath sources, and presents anticipated horizontal positioning accuracy results, ranging from 4 centimeters (open-sky) to 14 centimeters (under-canopy) for E5/El.

Coletor solar alternativo de concreto para aquecimento de água em aplicações agrícolas e agroindustriais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Atividade da enzima redutase do nitrato, em arroz cultivado em solo proveniente de áreas sob diferentes preparos, água e doses de nitrogênio

Pós-graduação em Agronomia - FEIS

Caracterização hidrológica e ciclagem de nutrientes em fragmento de mata ciliar em Botucatu, SP

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Parâmetros agrometeorológicos de cultura de pimentão (Capsicum annuum L.) em ambientes protegido e campo

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Uso de diferentes telas de sombreamento no cultivo protegido do tomateiro

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)