Results 71 to 80 of about 13,924,091 (398)

The application of multiple metrics in deformable image registration for target volume delineation of breast tumor bed

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Background and purpose For postoperative breast cancer patients, deformable image registration (DIR) is challenged due to the large deformations and non‐correspondence caused by tumor resection and clip insertion. To deal with it, three metrics (fiducial‐, region‐, and intensity‐based) were jointly used in DIR algorithm for improved accuracy ...
Xin Xie   +6 more
wiley   +1 more source

A Lesson from the James Webb Space Telescope: Early Engagement with Future Astrophysics Great Observatories Maximizes their Solar System Science [PDF]

open access: yesarXiv, 2020
Astrophysics facilities have been of tremendous importance for planetary science. The flagship space observatory Hubble Space Telescope has produced ground-breaking Solar System science, but when launched it did not even have the capability to track moving targets.
arxiv  

Dryness Indices Based on Remotely Sensed Vegetation and Land Surface Temperature for Evaluating the Soil Moisture Status in Cropland-Forest-Dominant Watersheds

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2015
The Temperature Vegetation Dryness Index (TVDI) was derived from the relationship between remotely sensed vegetation indices and land surface temperature (TS) in this study for assessing the soil moisture status at regional scale in South Korea. The Leaf
Heewon Moon and Minha Choi
doaj   +1 more source

Genomics in Space Life Sciences

open access: yesGenomics, Proteomics & Bioinformatics, 2008
Since the early days of manned spaceflight, hazardous effects of the space environment on living organisms have been disputed. With the continuous manning of the International Space Station, the planned Chinese space station, and renewed interest in returning to the Moon and sending manned flights to Mars, identifying and addressing the potential ...
Clement, Jade Q., Yokota, Hiroki
openaire   +2 more sources

Selfies at the science museum: exploring girls’ identity performances in a science learning space

open access: yesGender and Education, 2020
Science education has a seemingly intractable gender problem and remains largely the reserve of White, middle-class men and boys, especially in the physical sciences.
Emily Dawson   +7 more
semanticscholar   +1 more source

Insertion of the FeB cofactor in cNORs lacking metal inserting chaperones

open access: yesFEBS Letters, EarlyView.
Nitric oxide reductase is an enzyme found in the bacterial denitrification pathway. The NOR active site contains a non‐heme iron, often, but not always inserted with the assistance of chaperones. Here, we study the insertion of FeB in the subfamily of cNORs lacking chaperones and found a putative channel, conserved in the family, perhaps enabling the ...
Sofia Appelgren, Pia Ädelroth
wiley   +1 more source

Image quality comparisons of coil setups in 3T MRI for brain and head and neck radiotherapy simulations

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose MRI is increasingly used for brain and head and neck radiotherapy treatment planning due to its superior soft tissue contrast. Flexible array coils can be arranged to encompass treatment immobilization devices, which do not fit in diagnostic head/neck coils. Selecting a flexible coil arrangement to replace a diagnostic coil should rely
Evangelia Kaza   +6 more
wiley   +1 more source

NASA Earth and Space Science Explorers Poster [PDF]

open access: yes, 2007
This poster features several of the NASA Earth and Space Science Explorers, plus suggestions for using the series in the classroom. The series of online articles features NASA explorers, young and old, with many backgrounds and interests.
IGES
core  

Estimating Denitrification Rates in the East/Japan Sea Using Extended Optimum Multi-Parameter Analysis

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2015
Denitrification rates in the East/Japan Sea (EJS) were examined with extended Optimum Multi-Parameter (eOMP) analysis. The potential denitrification locations expected from the eOMP analysis occurred only in the Ulleung Basin (UB) and near the Tatar ...
Il-Nam Kim
doaj   +1 more source

Science with the space-based interferometer LISA. V: Extreme mass-ratio inspirals [PDF]

open access: yes, 2017
The space-based Laser Interferometer Space Antenna (LISA) will be able to observe the gravitational-wave signals from systems comprised of a massive black hole and a stellar-mass compact object.
S. Babak   +9 more
semanticscholar   +1 more source

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