Results 41 to 50 of about 1,234 (185)

Seascape Connectivity Shapes Genetic and Species β‐Diversity in Tropical Reef Fishes

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
Our study combines species occurrence data from five reef fish families with genomic SNP data for 19 species. A correlation between genetic and species β‐diversity emerges only in the Western Indian Ocean, where higher genetic β‐diversity and significant isolation by distance at both the population and community levels are detected.
Maurine Vilcot   +16 more
wiley   +1 more source

Effect of Phophorus Fertilization on the Respiratory Rate.Activity of Enzymes and Photosynthetic Rate of ADT 27 Rice(Oryza sativa L.)

open access: yesMadras Agricultural Journal, 1975
The effect of five levels of phosphorus viz.,15,30,45,60 and 75 kg P2O2/ha along with a control on the respiratory rate, -activity of enzymes and photosynthetic rate on ADT 27 rice was studied at different sttages of crop growth.Irrespective of the ...
V.Thandapani, J.Sakharam Rao
doaj   +1 more source

Cassava Endophytic Bacteriome as Potential Biocontrol Agents Against Three Crop Phytopathogenic Fungi

open access: yesMicrobiologyOpen, Volume 15, Issue 2, April 2026.
Eighty‐four endophytic bacteria from cassava were assessed for antagonistic activity against phytopathogens Colletotrichum siamense, Colletotrichum sublineola and Phytophthora infestans infecting cassava, sorghum and potato, respectively. Fourteen endophytic bacteria exhibited antifungal activity against the three phytopathogens, of which four ...
Roselyne Nyawir Owino   +3 more
wiley   +1 more source

Time Synchronisation for Passive Bistatic HFSWR via Kalman‐Filtered Delay‐Locked Loop

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper proposes a per‐chirp time synchronisation method, FLOS‐Kalman‐DLL, for passive bistatic high‐frequency surface wave radar (HFSWR) operating under the coexistence of clock drift and atmospheric impulsive noise. The method combines fractional lower‐order statistics with a Kalman‐filtered delay‐locked loop to achieve sub‐sample synchronisation ...
Yuan Lu, Jie Song, Wei Xiong, Yaqi Cui
wiley   +1 more source

Simultaneous operation of two over-the-horizon radars [PDF]

open access: yes, 2004
—By exploiting the reflective and refractive nature of high-frequency (HF) radiowave propagation through the iono-sphere or the conducting sea surface, over-the-horizon radar (OTHR) systems perform wide-area surveillance at long range well beyond the ...
Yimin Zhang   +3 more
core   +1 more source

Technical Analyses of the Interference Effect of “Advanced Radar”

open access: yesJournal of Measurement Science and Instrumentation, 2010
The conception of "advanced radar" is introduced and put forward,while it is proved that the weakpoints of interference can still be employed.Meanwhile,the paper expounds the principle how Over-The-Horizon Radar(OTHR)works,and derives the OTHR ...
Xi-xiang ZHANG1, Zhong-jie ZHANG2
doaj  

Pandemic‐induced changes in food acquisitions: Implications for child diet quality in the United States

open access: yesAmerican Journal of Agricultural Economics, Volume 108, Issue 1, Page 363-382, January 2026.
Abstract We estimate how the COVID‐19 pandemic altered school‐aged children's diet quality from March 2020 to July 2022 through the lens of food acquisitions. Because nationally representative food‐consumption data are absent during this time, we use several data sources to predict changes in diet quality. We first estimate a model of diet quality as a
Travis A. Smith   +3 more
wiley   +1 more source

ENSO‐Driven Variability in Ozone Sources and Its Impact on Tropospheric Ozone Radiative Forcing

open access: yesGeophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Ozone is the third strongest anthropogenic greenhouse gas with highest radiative efficiency in the tropical upper troposphere. Variability driven by El Niño‐Southern Oscillation (ENSO) modulates tropospheric column ozone instantaneous radiative forcing (TCO‐IRF) through changes in atmospheric dynamics, natural emissions, and stratospheric ...
Arman Pouyaei   +5 more
wiley   +1 more source

An Efficient Multi-Path Multitarget Tracking Algorithm for Over-The-Horizon Radar

open access: yesSensors, 2019
In target tracking environments using over-the-horizon radar (OTHR), one target may generate multiple detections through different signal propagation paths.
Yuan Huang, Yifang Shi, Taek Lyul Song
doaj   +1 more source

Liver Fat Fraction and Machine Learning Improve Steatohepatitis Diagnosis in Liver Transplant Patients

open access: yesNMR in Biomedicine, Volume 38, Issue 7, July 2025.
Machine learning identifies liver fat fraction (FF) measured by 1H MR spectroscopy, insulinemia, and elastography as robust, non‐invasive biomarkers for diagnosing steatohepatitis in liver transplant patients, validated through decision tree analysis.
Milan Hajek   +6 more
wiley   +1 more source

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