Results 121 to 130 of about 14,611,742 (406)

Wave Mechanics of a Two Wire Atomic Beamsplitter

, 2003
We consider the problem of an atomic beam propagating quantum mechanically through an atom beam splitter. Casting the problem in an adiabatic representation (in the spirit of the Born-Oppenheimer approximation in molecular physics) sheds light on ...
C. de Boor, D. Müller, Daniele C. E. Bortolotti, I. N. Levine, John L. Bohn, M. S. Child, S. Gasiorowicz   +6 more
core   +1 more source

Beam Structure Damage Identification Based on BP Neural Network and Support Vector Machine

, 2014
It is not easy to find marine cracks of structures by directly manual testing. When the cracks of important components are extended under extreme offshore environment, the whole structure would lose efficacy, endanger the staff’s safety, and course a ...
Bo Yan, Yao Cui, Lin Zhang, Chao Zhang, Yongzhi Yang, Zhenming Bao, Guobao Ning   +6 more
semanticscholar   +1 more source

A Micro-Force Sensor with Slotted-Quad-Beam Structure for Measuring the Friction in MEMS Bearings

Italian National Conference on Sensors, 2013
Presented here is a slotted-quad-beam structure sensor for the measurement of friction in micro bearings. Stress concentration slots are incorporated into a conventional quad-beam structure to improve the sensitivity of force measurements.
Huan Liu, Shuming Yang, Yulong Zhao, Zhuangde Jiang, Yan Liu, B. Tian   +5 more
semanticscholar   +1 more source

Hypoxia‐guided treatment planning for lung cancer with dose painting by numbers

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Tumor hypoxia significantly impacts the efficacy of radiotherapy. Recent developments in the technique of dose painting by numbers (DPBN) promise to improve the tumor control probability (TCP) in conventional radiotherapy for hypoxic cancer.
Yazhou Li, Yuanyuan Ma, Jieyan Wu, Hui Zhang, Hongyi Cai, Xinguo Liu, Qiang Li   +6 more
wiley   +1 more source

The structure of electrospray beams in vacuum [PDF]

Journal of Fluid Mechanics, 2008
Electrospray atomization of liquids in the cone-jet mode generates narrow droplet distributions with average diameters as small as a few nanometres. This ability is important for technologies such as colloid thrusters, nanoparticle generation and ion beam processes, and the optimization of these applications requires an understanding of the physics and
openaire   +2 more sources

Partial and full arc with DynamicARC technique in pencil beam scanning proton therapy for bilateral head and neck cancer: A feasibility and dosimetric study

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose A novel proton beam delivery method known as DynamicARC spot scanning has been introduced. The current study aims to determine whether the partial proton arc technique, in conjunction with DynamicARC pencil beam scanning (PBS), can meet clinical acceptance criteria for bilateral head and neck cancer (HNC) and provide an alternative to ...
Suresh Rana, Noufal Manthala Padannayil, Shyam Pokharel, Hina Saeed, Michael Kasper   +4 more
wiley   +1 more source

Modification of the Beam as Solution of Irregular Building due to Seismic Load

E3S Web of Conferences, 2018
In recent years, deterioration due to seismic activity has been widely emerged in earthquake prone areas all over the world. Most structures without seismic consideration fail massively due to many reasons, for instance: irregularity problem, low quality
Sumarsono Ririt Aprilin, Fajari Muhammad Aji   +1 more
doaj   +1 more source

Reconfigurable phased microstrip antenna array with defected ground structure and defected microstrip structure for beam steering application [PDF]

, 2018
Beam steering is defined as the ability to electronically steer the beam maximum of an antenna electric field pattern to some predefined point in space. The performance of a phased antenna array for beam steering without moving the antennas is important ...
Subhi Ahmad, Khalid
core  

Development of an automated CBCT‐based simulation‐free platform for expedited palliative radiotherapy on a conventional linear accelerator

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Conventional approaches for emergent or expedited palliative radiotherapy (RT) involve the application of cumbersome vendor‐provided solutions and/or multiple patient appointments to complete the RT workflow within a compressed timeframe.
Riley C. Tegtmeier, Edward L. Clouser Jr., Quan Chen, Courtney R. Buckey, Suzanne J. Chungbin, Christopher J. Kutyreff, Jose S. Aguilar, Amber L. Labbe, Brooke L. Horning, William G. Rule, Sujay A. Vora, Yi Rong   +11 more
wiley   +1 more source

Study on the Measurement Method of the Crack Local Flexibility of the Beam Structure

Shock and Vibration, 2020
The crack which appears in the structure can be described by a local flexibility. With the occurrence and propagation of crack, the local flexibility will change. The change can effectively reflect the damage degree of the structure.
Yumin He, Siyu Guo, Xiaolong Zhang
doaj   +1 more source