Results 91 to 100 of about 166,763 (371)

Evaluation of the system accuracy of frameless stereotactic radiosurgery using a combination of cone beam CT, six degrees of freedom couch, and surface image‐guided systems

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aims to evaluate the accuracy of the frameless linear accelerator‐based stereotactic radiosurgery (FSRS) system incorporating cone‐beam CT (CBCT), six degrees of freedom (6‐DoF) couch, room laser, and surface image‐guided (SG) systems.
Hao‐Wen Cheng, Jonathan Li, Sheng‐Hsuan Sun, Guanghua Yan, Chihray Liu   +4 more
wiley   +1 more source

Biosorption of Strontium from Aqueous Solution by the New Strain of Bacillus sp. Strain GT-83 [PDF]

مجله علوم و فنون هسته‌ای, 2009
An attempt was made to isolate bacterial strains capable of removing strontium biologically. In this study ten different water samples collected from Neydasht spring in the north of Iran and then the bacterial species were isolated from the water samples.
doaj  

Application of hydrochemistry and strontium isotope for understanding the hydrochemical characteristics and genesis of strontium-rich groundwater in karst area, Gongcheng County, Southwest China

Journal of Groundwater Science and Engineering
Understanding the hydrochemical characteristics and genesis mechanisms of strontium-rich groundwater is pivotal for supporting the exploitation and utilization of natural strontium-rich groundwater. In this research, 27 groundwater samples were collected.
Mi Tang, Jun Lv, Shi Yu, Yan Liu, Shao-hong You, Ping-ping Jiang   +5 more
doaj   +1 more source

Differential polarizability at 1064 nm of the strontium intercombination transition [PDF]

Phys. Rev. A 110, 032819 (2024)
We measure the scalar, vector and tensor components of the differential dynamic polarizability of the strontium intercombination transition at 1064 nm. We compare the experimental values with the theoretical prediction based on the most recently published spectroscopic data, and find a very good agreement.
arxiv   +1 more source

NLTE strontium abundance in a sample of extremely metal poor stars and the Sr/Ba ratio in the early Galaxy [PDF]

, 2011
Heavy element abundances in extremely metal-poor stars provide strong constraints on the processes of forming these elements in the first stars. We attempt to determine precise abundances of strontium in a homogeneous sample of extremely metal-poor stars.
arxiv   +1 more source

Strontium isotope stratigraphy in the Late Cretaceous: Numerical calibration of the Sr isotope curve and intercontinental correlation for the campanian [PDF]

, 1993
The white Chalk exposed in quarries at Lagerdorf and Kronsmoor, northwestern Germany, provides a standard section for the European Upper Cretaceous.
Chen, M, Gale, AS, Kennedy, WJ, McArthur, JM, Thirwall, MF   +4 more
core   +1 more source

Improving dose delivery in non‐coplanar cranial SRS: Stereoscopic x‐ray‐guided mitigation of table walkout errors

Journal of Applied Clinical Medical Physics, EarlyView.
Purpose Linear accelerator (LINAC)‐based single‐isocenter multi‐target (SIMT) treatment has streamlined the cranial stereotactic radiosurgery (SRS) workflow. Though efficient, SIMT delivery adds additional challenges that should be considered, including increased sensitivity to rotational errors for off‐isocenter targets.
Yohan A. Walter, Philip F. Durham, Anne N. Hubbard, William E. Burrell, Hsinshun T. Wu   +4 more
wiley   +1 more source

An investigation into the feasibility and efficacy of stereotactic radiosurgery for 1–3 cm single brain lesions on the ring‐mounted Halcyon LINAC

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose An evaluation of the accuracy, safety, and efficiency of the Halcyon ring delivery system (RDS) for stereotactic radiosurgery (SRS) treatment to relatively small (1–3 cm) brain lesions. Methods After completing the extensive in‐house quality assurance checks including Winston–Lutz test and independent dose verification via MD Anderson ...
Kate Hazelwood, Shane McCarthy, Josh Misa, David Castelvetere, William St. Clair, Damodar Pokhrel   +5 more
wiley   +1 more source

Strontium ion can significantly decrease enamel demineralization and prevent the enamel surface hardness loss in acidic environment

Journal of the Formosan Medical Association, 2019
Background/purpose: Strontium ion may play a role similar to calcium ion in enamel remineralization. The aim of this study was to investigate the effect of strontium ion concentration gradient on the demineralization of enamel.
Yin-Lin Wang, Hao-Hueng Chang, Yu-Chih Chiang, Chao-Hsiu Lin, Chun-Pin Lin   +4 more
doaj  

Crystallization Behavior and Microstructural Analysis of Strontium Rich (Pb𝑥Sr𝟏−𝑥)TiO𝟑 Glass Ceramics in Presence of La𝟐O𝟑

Advances in Materials Science and Engineering, 2011
Crystallization and microstructural behavior of various strontium-rich glass ceramics in the system 65[(PbxSr1−x)TiO3]-24[2SiO2⋅B2O3]-5[BaO]-5[K2O]-1[La2O3] (0.0≤𝑥≤0.4) with addition of 1% La2O3 have been investigated.
C. R. Gautam, Devendra Kumar, Om Parkash
doaj   +1 more source