Results 111 to 120 of about 3,001,365 (195)

Development of a low‐cost 3D‐printed phantom for end‐to‐end testing of model‐based dose calculation algorithms (MBDCAs) in high‐dose‐rate (HDR) brachytherapy

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 11, November 2026.
Abstract Background Model‐Based Dose Calculation Algorithms (MBDCAs), such as AcurosBV, have improved dosimetric accuracy in high‐dose‐rate (HDR) brachytherapy by accounting for medium heterogeneities and variations in scatter conditions. However, their safe and effective clinical implementation requires thorough commissioning, of which end‐to‐end (E2E)
Sean Grace   +3 more
wiley   +1 more source

CoSP: Reconfigurable Metamaterial Inverse Design via Contrastive Pretrained Large Language Model

open access: yesAdvanced Science, Volume 13, Issue 61, 3 November 2026.
In this work, CoSP (contrastive multi‐state pretrain), an intelligent inverse design method for reconfigurable metamaterials based on a contrastive pretrained large language model, is proposed. Numerical experiments demonstrate that CoSP can design reconfigurable metamaterial structures for multi‐state, multi‐band optical responses, showing great ...
Shujie Yang   +4 more
wiley   +1 more source

Measuring water vapor with differential absorption lidar

open access: yes, 2012
Despite the need for global measurements of water vapor profiles with low bias and high vertical resolution there is currently no operational remote sensing system that would deliver such data.
Martin Wirth, Wirth, Martin
core   +1 more source

Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors

open access: yesAdvanced Science, Volume 13, Issue 61, 3 November 2026.
A MoTe2/WSe2/Cl–SnSe2 unipolar barrier photodetector is demonstrated, in which the WSe2 layer effectively blocks majority‐carrier injection, yielding suppressed dark current and enhanced near‐infrared (NIR) sensing. The device achieves high detectivity, a wide linear dynamic range, and fast response under 1310 nm illumination, enabling high‐fidelity 3D
Jung Pyo Hong   +21 more
wiley   +1 more source

Atmospheric monitoring for the H.E.S.S. experiment using a single scattering lidar [PDF]

open access: yes, 2009
The High Energy Stereoscopic System (H.E.S.S.) is an array of 4 telescopes located in Namibia, which use the imaging atmospheric Cherenkov technique (IACT) to study astrophysical emission of gamma radiation in the energy window from 100 GeV to 50 TeV ...
Rulten, Cameron Boyd
core  

Perceived importance and didactic difficulty of chemistry education: Insights from Czech teachers

open access: yesThe Curriculum Journal, Volume 37, Issue 4, Page 1150-1169, November 2026.
Abstract This empirical study examines how chemistry teachers in lower and upper secondary schools in the Czech Republic evaluate the content of the chemistry curriculum, focussing on its perceived importance and didactic difficulty. Based on a quantitative survey (N = 146), the study provides insight into the pedagogical content knowledge of ...
Jitka Lorenzová   +6 more
wiley   +1 more source

Building a Framework for Peatland Assessment in Europe by Combining Spectral and Molecular Data

open access: yesEcology and Evolution, Volume 16, Issue 11, November 2026.
This study investigates whether high‐resolution spectral vegetation indices can be used to distinguish between pristine and drained peatlands across Europe and whether these signals reflect underlying biogeochemical processes. By combining satellite‐derived indices with soil elemental and molecular data, we show that drained peatlands exhibit distinct ...
Miriam Groß‐Schmölders   +5 more
wiley   +1 more source

2-µm Direct Detection Differential Absorption LIDAR For Multi-Species Atmospheric Sensing

open access: yes, 2016
International audienceA direct detection atmospheric differential absorption lidar, based on a high energy optical parametric source at 2 µm, has been developed to address CO2, CH4 and H2O.
Antoine Godard   +15 more
core   +1 more source

Spatial variation in liana effects on host‐tree allometry and biomass in an intact tropical forest

open access: yesEcography, Volume 2026, Issue 11, November 2026.
Lianas are increasing in abundance across the tropics, yet local spatial variation in their effects on host‐tree allometry and biomass, and the drivers of this variation within forests, remain poorly understood. Using field inventory, drone photogrammetry, and terrestrial laser scanning (TLS) across a 50‐ha plot on Barro Colorado Island, Panama, we ...
Sruthi M. Krishna Moorthy   +9 more
wiley   +1 more source

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