Results 121 to 130 of about 7,241 (305)

Raindrop size distribution extracted from rain attenuation data [PDF]

, 2008
Attenuation due to rain plays a significant role in the terrestrial and earthspace communication systems especially at frequencies above 10 GHz. Although models proposed by ITU-R for the prediction of rain attenuation give a good estimation about the ...
Omar AbdulKabeer, Hatem AlMokhtar
core  

Application of Principal Component Analysis and Probabilistic Neural Networks in Ferralsols Recovery Evaluation Through Planting of Mabea Fistulifera and Eucalyptus Urograndis

Land Degradation &Development, EarlyView.
ABSTRACT This study presents an innovative assessment model for analyzing the evolution of degraded soils subjected to different reclamation strategies. The proposal combines statistical and artificial intelligence tools to jointly integrate multiple physical and chemical soil properties, allowing for a more synthetic view of the processes.
Melissa Alexandre Santos, Borja Velázquez‐Martí, Jorge João Delfim, Laura Silva Nantes, Jose Augusto Liberato de Souza, Gabriel Augusto da Silva Lunardelli, Dayara Vivian Alvares, Carolina dos Santos Batista Bonini   +7 more
wiley   +1 more source

Assessment of Soil Erosion Over Six Decades in a Long‐Term Experiment Using Fallout 137Cs and RUSLE: A South American Case Study

Land Degradation &Development, EarlyView.
ABSTRACT Soil erosion remains a major global concern affecting agricultural productivity and land sustainability. This study investigates the magnitude and variability of soil erosion in a long‐term experiment (LTE) established in 1963 in Colonia, Uruguay, aiming to compare the performance of the 137Cs tracer technique and the RUSLE model across ...
Marcos Tassano, Mirel Cabrera, Joan Gonzalez, Mario Perez‐Bidegain, Olivier Evrard, Kathrin Grahmann, J. Andrés Quincke   +6 more
wiley   +1 more source

Slant path rain attenuation profile obtained from radar data [PDF]

, 2009
Many telecommunication systems are going towards high frequencies as such ranges are in great demand in nowadays' wireless devices. However, in high frequencies, the signal is subjected to rain attenuation.
A. A. M. Ali, Awfa
core  

Scaling Rain Attenuation as a Function of the Link Elevation

, 2018
The effect of the attenuation due to rain in satellite links increases rapidly for frequencies above 10 GHz. The development of tools to mitigate this impairment relies on the good knowledge on the behavior of the rain attenuation, and in particular on ...
Lorenzo Luini, Luciano M. Tomaz, Tomaz L. M., Carlo Capsoni, Luini L., Capsoni C.   +5 more
core   +1 more source

Impact of Sugarcane Management Practices and Time Periods on Soil Organic Carbon and δ13C Signature After Paddy Rice Conversion

Land Degradation &Development, EarlyView.
ABSTRACT Land use change (LUC) from paddy rice to sugarcane cultivation strongly influences soil organic carbon (SOC) stocks, with the extent and direction of change depending on residue management and time since conversion. This study aimed to (i) evaluate SOC stock changes under different residue management practices and conversion periods following ...
Nipon Mawan, Nuttapon Khongdee, Chunling Luo, Wanwisa Pansak   +3 more
wiley   +1 more source

Radiometric measurements of rain attenuation and estimation of rain height

, 2000
95-101Measurements of rain attenuation at 22.235 and 31.4 GHz have been made during 1991 in Calcutta using microwave radiometers, and compared with calculated attenuation using different rain drop-size distributions. For low rain rates, the Joss et al.
Karmakar, P K, Chattopadhyay, S, QGibbins, C J, Sen, A K   +3 more
core  

From the sea to DNA barcode: Optimized preservation method for gelatinous zooplankton integrative taxonomy

Limnology and Oceanography: Methods, EarlyView.
Abstract Assigning taxonomic identity and thus assessing taxonomic diversity in gelatinous zooplankton is challenging due to their fragility and difficult preservation. Formalin fixation compromises DNA integrity, while flash‐freezing, ethanol, and acetone preservation affect morphological features. In this study, we developed a methodological protocol
Claudia Traboni, Rade Garić, Rita Marino, Paolo Sordino, Priscilla Licandro   +4 more
wiley   +1 more source

The Kernel Density Estimation Technique for Spatio-Temporal Distribution and Mapping of Rain Heights over South Africa: The Effects on Rain-Induced Attenuation

Atmosphere
The devastating effects of rain-induced attenuation on communication links operating above 10 GHz during rainy events can significantly degrade signal quality, leading to interruptions in service and reduced data throughput. Understanding the spatial and
Yusuf Babatunde Lawal, Pius Adewale Owolawi, Chunling Tu, Etienne Van Wyk, Joseph Sunday Ojo   +4 more
doaj   +1 more source

Rediscovery of Strobilanthes panichanga and discovery of Strobilanthes parryorum (Acanthaceae): two endangered species from the hills of Dima Hasao, Assam, India

Nordic Journal of Botany, EarlyView.
We report on two species of Strobilanthes Blume. Strobilanthes panichanga (Nees) T.Anderson has been rediscovered in the Dima Hasao district of Assam, India, after a very long gap of 150 years, and Strobilanthes parryorum C.E.C.Fisch has been discovered for the first time in Assam, India.
Kapil Kumar Kemprai, Souravjyoti Borah
wiley   +1 more source