Search Results - "David M. Le"
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The Salinity Retrieval Algorithms for the NASA Aquarius Version 5 and SMAP Version 3 Releases
Published in Remote sensing (Basel, Switzerland) (15-07-2018)“…The Aquarius end-of-mission (Version 5) salinity data set was released in December 2017. This article gives a comprehensive overview of the main steps of the…”
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Incidence and severity of childhood pneumonia in the first year of life in a South African birth cohort: the Drakenstein Child Health Study
Published in The Lancet global health (01-02-2015)“…Summary Background Childhood pneumonia causes substantial mortality and morbidity. Accurate measurements of pneumonia incidence are scarce in low-income and…”
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3
Spurious Signal in SMAP Fourth Stokes Parameter
Published in IEEE transactions on geoscience and remote sensing (01-11-2021)“…The radiometer on the NASA Soil Moisture Active/Passive (SMAP) mission is a fully polarimetric instrument that operates at L-band in the spectrum window at…”
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Seawater Debye Model Function at L-Band and Its Impact on Salinity Retrieval From Aquarius Satellite Data
Published in IEEE transactions on geoscience and remote sensing (01-10-2021)“…A model function of seawater, which specifies the dielectric constant of seawater as a function of salinity, temperature, and frequency, is important for the…”
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Soil Moisture Active/Passive (SMAP) L-Band Microwave Radiometer Post-Launch Calibration Revisit: Approach and Performance
Published in IEEE journal of selected topics in applied earth observations and remote sensing (01-01-2021)“…The soil moisture active passive (SMAP) microwave radiometer is a fully-polarimetric L -band radiometer flown on the SMAP satellite in a 6 AM /6 PM…”
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Sensitivity of Wide Bandwidth Radiometer for Remote Sensing of Ocean Salinity
Published in IEEE transactions on geoscience and remote sensing (01-01-2022)“…Passive microwave remote sensing of sea surface salinity from space is currently being done with measurements in the 27 MHz wide spectral window at 1.413 GHz…”
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Status of the Dielectric Constant of Sea Water at L-Band for Remote Sensing of Salinity
Published in IEEE transactions on geoscience and remote sensing (01-01-2022)“…The model expressing the dielectric constant of sea water at microwave frequencies as a function of salinity and temperature is an important element in remote…”
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Global incidence of adverse clinical events in non-alcoholic fatty liver disease: A systematic review and meta-analysis
Published in Clinical and molecular hepatology (01-04-2024)“…Nonalcoholic fatty liver disease (NAFLD) is associated with a multitude of adverse outcomes. We aimed to estimate the pooled incidence of NAFLD-related adverse…”
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Model for Dielectric Constant of Seawater Based on L-Band Measurements With Conductivity by Definition
Published in IEEE geoscience and remote sensing letters (01-01-2022)“…This article reports an improvement in the model for the dielectric constant of seawater used to fit laboratory measurements of the dielectric constant at the…”
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10
Measurement of SST and SSS Using Frequencies in the Range 0.3 – 2.0 GHz
Published in Radio science (01-04-2022)“…Wide bandwidth radiometer systems that make measurements at multiple frequencies in the range 300 MHz to 2 GHz have been proposed to address parameters…”
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Lower Respiratory Tract Infections in Children in a Well-vaccinated South African Birth Cohort: Spectrum of Disease and Risk Factors
Published in Clinical infectious diseases (15-10-2019)“…Abstract Background Childhood lower respiratory tract infections (LRTIs) cause substantial morbidity and under-5 child mortality. The epidemiology of LRTI is…”
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Remote Sensing of Sea Surface Salinity: Comparison of Satellite and In Situ Observations and Impact of Retrieval Parameters
Published in Remote sensing (Basel, Switzerland) (01-04-2019)“…Since 2009, three low frequency microwave sensors have been launched into space with the capability of global monitoring of sea surface salinity (SSS). The…”
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13
A Path to High-Value Gastric Cancer Surgery Care Delivery
Published in Annals of surgery open (01-06-2024)“…To evaluate the feasibility, safety, and effectiveness of a comprehensive regional program, including the Minimally Invasive Recovery and Empowerment Care…”
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The Fourth Stokes Parameter for Geolocation in Passive Microwave Remote Sensing from Space
Published in IEEE transactions on geoscience and remote sensing (01-01-2022)“…Polarimetric microwave radiometers such as SMAP are capable of measuring the fourth Stokes parameter in brightness temperature over the Earth surface. The…”
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The Multifrequency Future for Remote Sensing of Sea Surface Salinity from Space
Published in Remote sensing (Basel, Switzerland) (01-05-2020)“…Passive microwave remote sensing of sea surface salinity from space is done with measurements in the 27 MHz wide spectral window at 1.413 GHz (L-band) which is…”
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Factors associated with serious outcomes of pneumonia among children in a birth cohort in South Africa
Published in PloS one (13-08-2021)“…Child hospitalization for pneumonia remains common, and pneumonia is a major cause of child mortality. Early identification of clinical factors associated with…”
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Cytomegalovirus acquisition in infancy and the risk of tuberculosis disease in childhood: a longitudinal birth cohort study in Cape Town, South Africa
Published in The Lancet global health (01-12-2021)“…The risk of tuberculosis disease after recent exposure is greatest before age 5 years; however, the mechanisms explaining this increased risk are not well…”
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A rare mutation causing autosomal dominant STAT1 deficiency in a South African multiplex kindred with disseminated BCG infection
Published in BMC pediatrics (29-07-2023)“…Autosomal dominant signal transducer and activator of transcription 1 (STAT1) deficiency, part of the Mendelian susceptibility to mycobacterial disease (MSMD)…”
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2019 Global NAFLD Prevalence: A Systematic Review and Meta-analysis
Published in Clinical gastroenterology and hepatology (01-12-2022)“…The increasing rates of obesity and type 2 diabetes mellitus may lead to increased prevalence of nonalcoholic fatty liver disease (NAFLD). We aimed to…”
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Global incidence of non-alcoholic fatty liver disease: A systematic review and meta-analysis of 63 studies and 1,201,807 persons
Published in Journal of hepatology (01-08-2023)“…The prevalence of non-alcoholic fatty liver disease (NAFLD) is increasing. We aimed to estimate the pooled global NAFLD incidence. We performed a systematic…”
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