Results 31 to 40 of about 4,577,170 (346)

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

The Effect of Opening on Stiffness and Strength of Infilled Steel Frames [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2016
Infilled walls are the major non-structural elements which have significant effects on the seismic behavior of structures. The shape and strength of the brick elements are the main parameters affect the strength of the walls.
Mostafa Abbasnejadfard, Masood Farzam
doaj   +1 more source

Noninvasive hippocampal blood−brain barrier opening in Alzheimer’s disease with focused ultrasound

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
The blood–brain barrier (BBB) presents a significant challenge for treating brain disorders. The hippocampus is a key target for novel therapeutics, playing an important role in Alzheimer’s disease (AD), epilepsy, and depression. Preclinical studies have
A. Rezai   +12 more
semanticscholar   +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

Effect of floor openings on evacuation efficiency in multipurpose commercial buildings: IFC mall in Yeouido, Seoul, Korea

open access: yesJournal of Asian Architecture and Building Engineering, 2023
To achieve evacuation-optimized design at the architectural planning phase, this study analyzed the effect of floor openings in multipurpose commercial buildings on their evacuation efficiency. Herein, the IFC Mall in Yeouido, Seoul, Korea was considered
Minseok Kim   +4 more
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

Experimental investigations on concrete beams reinforced with equivalent service steel pipe

open access: yesPrzegląd Naukowy Inżynieria i Kształtowanie Środowiska, 2021
Different techniques were employed for the passage of different utilities through structural elements. The reduction of the overall building weight was the main concern that needs to be achieved, especially for a multistory building.
Labeeb S. Al-Yassri   +2 more
doaj   +1 more source

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