Results 81 to 90 of about 339,926 (127)

Dosimetric evidence confirms computational model for magnetic field induced dose distortions of therapeutic proton beams

open access: yes, 2017
Given the sensitivity of proton therapy to anatomical variations, this cancer treatment modality is expected to benefit greatly from integration with magnetic resonance (MR) imaging.
Bussmann, Michael   +5 more
core   +1 more source

Deflection and translation of a ray traversing an optical system, nodal rays and the optical axis

open access: yesAfrican Vision and Eye Health, 2009
Expressions are derived for the deflection and transverse translation of a ray as it traverses an arbitrary optical system.  The system may be astigmatic and have relatively decentred refracting elements.
W. F. Harris, S. D. Mathebula, A. Rubin
doaj   +1 more source

Deflection of concrete slabs with GFRP reinforcement caused by shrinkage

open access: yesSelected Scientific Papers: Journal of Civil Engineering, 2019
The use of new reinforcing materials and products in the construction industry requires their thorough assessment for a variety of design situations. One of the significant effects is the shrinkage of the concrete, which in the case of asymmetrically ...
Kušnírová Darina, Priganc Sergej
doaj   +1 more source

Free vibration of rectangular plates with a small initial curvature [PDF]

open access: yes
The method of matched asymptotic expansions is used to solve the transverse free vibration of a slightly curved, thin rectangular plate. Analytical results for natural frequencies and mode shapes are presented in the limit when the dimensionless bending ...
Adeniji-Fashola, A. A., Oyediran, A. A.
core   +1 more source

Spin Rate and Deflection Ratio of a Ping Pong Ball

open access: yesInternational Scholastic Journal of Science, 2013
To investigate the effects of a spherical object’s spin rate on the curvature of its flight, Ping Pong balls, of varying spin rates, were hit horizontally and recorded from above with a high-speed camera.
Byung Joon Ahn
doaj  

Thermal stresses associated with a thermosensitive multilayered disc analysed due to point heating

open access: yesInternational Journal of Applied Mechanics and Engineering
In this paper, analytical solutions are presented for temperature and thermal behavior of a thermosensitive multilayered annular disc due to point heat source. Convective heating is applied to both the innermost and outermost layers.
V. B. Srinivas   +4 more
doaj   +1 more source

Flight-measured X-24A lifting body control surface hinge moments and correlation with wind tunnel predictions [PDF]

open access: yes
Control-surface hinge-moment measurements obtained in the X-24A lifting body flight-test program are compared with results from wind-tunnel tests. The effects of variations in angle of attack, angle of sideslip, rudder bias, rudder deflection, upper-flap
Pearson, G. P. E., Tang, M. H.
core   +1 more source

Studi Perilaku Tiang Group Pada Lapisan Tanah Terlikuifaksi

open access: yesTeras Jurnal: Jurnal Teknik Sipil
Abstrak Likuifaksi merupakan satu fenomena yang terjadi pada lapisan tanah akibat gempa bumi. Pada saat terjadi likuifaksi tanah mengalami peningkatan tekanan air pori yang menyebabkan tanah kehilangan kuat geser sehingga mengalami penurunan tegangan ...
Adolf Situmorang   +2 more
doaj   +1 more source

Stress Analysis of Guide Rails of Elevators

open access: yesAl-Khawarizmi Engineering Journal, 2009
The mechanical design of elevator elements is always performed by international standards. The engineer selects the appropriate elements of elevator according to catalogues without knowing scientific details. Therefore, a theoretical analysis is achieved
Wisam H. Ali, Hayder F. Neamah
doaj  

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