Results 61 to 70 of about 2,207,326 (232)

Intrafraction motion and impact of margin reduction for MR‐Linac online adaptive radiotherapy for pancreatic cancer treatments

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 17-24, March 2025.
This analysis included quantification of intrafraction motion in pancreas stereotactic ablative radiotherapy treated on the MR‐Linac, leading to the development of adjusted (PTV) margins. Intrafraction motion indicated an average target displacement of 1–3 mm, resulting in an adjusted PTV margin of 2 mm in the right–left and superior–inferior ...
Ashleigh Fasala, Madeline Carr, Yolanda Surjan, Parmoun Daghigh, Jeremy de Leon, Abbey Burns, Vikneswary Batumalai   +6 more
wiley   +1 more source

Research on the Flow Evolution and Runner Force Characteristics of a Pump-Turbine Under Cavitation Effects

Applied Sciences
Pump-turbines are critical for maintaining power grid stability, but they frequently suffer from flow instabilities induced by cavitation due to frequent operating condition changes.
Yanhao Li, Lei Chen, Jianwen Xu, An Yu
doaj   +1 more source

Hydraulic torque on the guide vane within the slight opening of pump turbine in turbine operating mode

IOP Conference Series: Earth and Environmental Science, 2014
In a pumped storage power station, the units produce vibration and noise at times when the guide vanes rotate into the slight opening region during the turbine operating mode. According to this phenomenon, the simulation of transient flow in the units during the motion of the guide vane is carried out to investigate the variation of flow state in the ...
H G Fan, H X Yang, F C Li, N X Chen
openaire   +1 more source

Cononsolvency‐Assisted Fabrication of Hydrogels and Microgels With Tunable Porosity, Diffusivity and Stiffness

Macromolecular Rapid Communications, EarlyView.
The cononsolvency of poly(dimethyl acrylamide‐co‐hydroxyethyl acrylamide) copolymers in water‐acetonitrile mixtures enables the synthesis of hydrogels with finely tuned porosity. Optimized for droplet‐based microfluidics, this approach facilitates the fabrication of porous microgels with tunable mechanical and diffusion properties, offering precise ...
Maria I. Pieper, Daniel D. Stöbener, Bernhard Häßel, Richard Hoogenboom, Andrij Pich   +4 more
wiley   +1 more source

Proximity to wind turbines altered plant–pollinator dynamics in prairie and sagebrush ecosystems in Wyoming, USA

Nordic Journal of Botany, EarlyView.
Wind turbines influence several abiotic conditions in the environments they are sited in and may influence the behavior and movement of insect pollinators. It is unknown how operating turbines influence plant–pollinator interactions. To investigate if pollination dynamics could be affected by the presence of wind turbines, we recorded videos of ...
Michelle Weschler, Brenna Martin, Lusha Tronstad   +2 more
wiley   +1 more source

Numerical simulation of fish damage in a bulb tubular turbine with different guide vane openings

Journal of Physics: Conference Series
Abstract Tubular turbines have advantages in developing low-head hydropower, however, the development of hydropower shouldn’t forget to maintain a balance with ecology. In this paper, a three-dimensional model of the flow channel of a low-head power plant bulb tubular turbine unit is established using Unigraphics NX, and the hydraulic ...
Li Qian, Yu Yang, Yang Chunxia, Zhang Qianxu, Zheng Yuan   +4 more
openaire   +1 more source

Behavior of Injection‐Molded Nylon 6 Composites With Virgin and Field‐Exposed Waste‐Recycled Blends

Polymer Composites, EarlyView.
Recycling field‐exposed Nylon 6 composites for sustainable secondary applications. ABSTRACT Every year, more than 18,600 metric tonnes of glass fiber‐reinforced Nylon 6 composite waste from sucker rod guides used in downhole oil and gas applications are landfilled due to uncertainty about retained performance after prolonged service exposure.
Chundu Gyem Tamang, Allan Manalo, Paulomi (Polly) Burey, Wahid Ferdous, Tristan Shelley, Mayur Patel, Tony Chapman   +6 more
wiley   +1 more source

DESAIN LINKAGE GUIDE VANE UNTUK MENGATUR ALIRAN AIR PADA TURBIN KAPLAN 6 SUDU RUNNER [PDF]

, 2023
Turbin kaplan merupakan turbin air jenis reaksi beraliran aksial, beroperasi pada head yang rendah dengan kapasitas aliran air yang tinggi atau bahkan dapat beroperasi pada kapasitas aliran air yang sangat rendah.
ANDHIKA PRATAMA PUTRA, .
core   +1 more source

Effect of leakage flow from guide vanes on erosion of the runner of a Francis turbine [PDF]

International Journal of Fluid Engineering
For Francis turbines, the importance of guide vanes in efficient operation is to provide optimum flow conditions to the runner. This requires a clearance gap to be provided at the ends of the guide vanes.
Kushal Shrestha, Bhola Thapa, Sailesh Chitrakar, Zhiwei Guo, Zhongdong Qian   +4 more
doaj   +1 more source

MR‐Linac Successfully Guided the Treatment of a Free‐Moving Mesenteric Mass

Precision Radiation Oncology, EarlyView.
This case demonstrated that a mesenteric tumor could move significantly day‐to‐day in all directions with large volume change. MR‐Linac with online adaptive capability provided a superior platform to treat mobile target with significantly reduced normal tissue exposure to radiation .
Xin Wang, Tze Yee Lim, He Wang, Bouthaina Shbib Dabaja, Jinzhong Yang   +4 more
wiley   +1 more source