Results 31 to 40 of about 4,540,854 (335)

Evaluation Of The Nonlinear Static Behavior Of Unstiffened Steel Plate Shear Walls With/Without Openings [PDF]

open access: yesمهندسی عمران شریف, 2021
Although steel plate shear walls have been used to resist lateral loads in recent decades, its complex behavior has brought about difficulties in employing this system.
F. Behnamfar   +3 more
doaj   +1 more source

Catalytic Enantioselective Ring-Opening Reactions of Cyclopropanes.

open access: yesChemical Reviews, 2020
This review describes the development of enantioselective methods for the ring opening of cyclopropanes. Both approaches based on the reaction of nonchiral cyclopropanes and (dynamic) kinetic resolutions and asymmetric transformations of chiral ...
Vincent Pirenne   +2 more
semanticscholar   +1 more source

The Effect of Confining Pressure and Water Content on Energy Evolution Characteristics of Sandstone under Stepwise Loading and Unloading

open access: yesAdvances in Civil Engineering, 2018
To investigate the mechanical properties and energy evolution characteristics of sandstone depending on the water contents and confining pressure, the uniaxial and triaxial tests were conducted.
Shuren Wang   +5 more
doaj   +1 more source

Substrate-induced bandgap opening in epitaxial graphene. [PDF]

open access: yesNature Materials, 2007
Graphene has shown great application potential as the host material for next-generation electronic devices. However, despite its intriguing properties, one of the biggest hurdles for graphene to be useful as an electronic material is the lack of an ...
Shuyun Zhou   +11 more
semanticscholar   +1 more source

Prediction of the Load-Bearing Behavior of SPSW with Rectangular Opening by RBF Network

open access: yesApplied Sciences, 2020
As a lateral load-bearing system, the steel plate shear wall (SPSW) is utilized in different structural systems that are susceptible to seismic risk and because of functional reasons SPSWs may need openings.
Mohammad Javad Moradi   +3 more
doaj   +1 more source

Effects of the Opening on the Behavior of Composite Steel Plate Shear Wall (CSPSW) [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2019
Due to architectural, mechanical and even structural considerations, in some cases there is need to create some openings in the composite steel shear walls. Presence of the openings can considerably affect the wall behavior. Therefore, in this study, the
Mohammad Meghdadian, Mansour Ghalehnovi
doaj   +1 more source

Blood-Brain Barrier Opening in Primary Brain Tumors with Non-invasive MR-Guided Focused Ultrasound: A Clinical Safety and Feasibility Study

open access: yesScientific Reports, 2019
The blood-brain barrier (BBB) has long limited therapeutic access to brain tumor and peritumoral tissue. In animals, MR-guided focused ultrasound (MRgFUS) with intravenously injected microbubbles can temporarily and repeatedly disrupt the BBB in a ...
T. Mainprize   +11 more
semanticscholar   +1 more source

#Openteach: Open Course, Open Online Teaching, Open Textbook [PDF]

open access: yesEDEN Conference Proceedings, 2021
This paper will explore the experiences of the #Openteach project team in developing a flexible and evidence based approach to support professional learning for those who teach online. The project had a number of phases, which included a needs analysis of online students and educators about effective online teaching, the publication of a review of the ...
Farrell, Orna   +3 more
openaire   +2 more sources

Openings [PDF]

open access: yesThe Annals of Family Medicine, 2015
Reviewing his clinic patient schedule for the day, a physician reflects on the history of a young woman he has been caring for over the past 9 years. What starts out as a routine visit then turns into a unique opening for communication and connection. A chance glimpse out the window of the exam room leads to a deeper meditation on parenthood, survival,
openaire   +2 more sources

Characteristic of Steady-State Flow Force on the Cone Valve Based on Orthogonal Test Method

open access: yesFrontiers in Energy Research, 2022
The steady-state flow force is the fundamental reason that affects the pressure stability, which will reduce the control performance of a hydraulic valve.
Xiumei Liu   +7 more
doaj   +1 more source

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