Results 61 to 70 of about 3,990,557 (230)

Sheet‐Size‐Dependent Mosaicity of 2D Phyllosilicate Membranes

open access: yesAdvanced Science, EarlyView.
This study explores how the size of 2D vermiculite sheets affects the structure of laminar membranes. High‐resolution x‐ray diffraction reveals how sheet size governs structural disorder and crystallinity. These changes directly impact ion permeability.
Min A Kim   +6 more
wiley   +1 more source

Vacation laws and annual work hours [PDF]

open access: yes
This article reviews the theory and evidence regarding how work hours are determined and the role of employer policies on vacation. The authors discuss possible economic rationales for vacation laws and present empirical evidence on whether they affect ...
Jennifer Oldham, Joseph G. Altonji
core  

Comments on “multi-server system with single working vacation” [PDF]

open access: yes, 2009
Lin and Ke consider the M/M/R queue with working vacation [Chuen-Horng Lin, Jau-Chuan Ke, Multi-server system with single working vacation, Appl. Math. Modell.
Do, Tien Van
core   +1 more source

Photoelectric Imaging of the Optically Inactive Charge State of Silicon‐Vacancy Defects in Diamond

open access: yesAdvanced Science, EarlyView.
Although the doubly negative charge state of the SiV center in diamond is predicted to ionize only in the ultraviolet and is therefore considered optically inaccessible, we demonstrate visible‐range photoelectric imaging enabled by a previously unrecognized regime of laser‐assisted tunneling. ABSTRACT The investigation of optically active point defects
Ilia Chuprina   +8 more
wiley   +1 more source

Working Girls Get Weekend Vacation

open access: yes, 1951
Video footage from the WBAP-TV television station in Fort Worth, Texas, to accompany a news story about a free vacation promotion offered to young working women by the Baker Hotel and Pioneer ...
WBAP-TV (Television station : Fort Worth, Tex.)
core  

The FMX/FM/1 Queue with Multiple Working Vacation [PDF]

open access: yes, 2017
This study investigates the batch arrival FMX/FM/1 queue with multiple working vacation. For this fuzzy queuing model, this research obtains some performance measure of interest such as mean system length, mean system sojourn time, mean busy period for ...
Kannadasan, G., Sathiyamoorthi, N.
core   +1 more source

Cobalt‐Catalyzed Asymmetric Construction of Boron Stereocenters With C–N Axial Chirality

open access: yesAdvanced Science, EarlyView.
A cobalt/Salox‐catalyzed one‐pot annulation enables enantioselective formation of B‐stereogenic centers and C─N axial chirality via C─H/N─H annulation, affording diverse fluorescent products with high stereocontrol and optoelectronic potential. ABSTRACT The efficient construction of boron stereogenic centers alongside axial chirality remains a ...
Subramani Kumaran   +5 more
wiley   +1 more source

Performance Analysis of Two Different Types of Waiting Queues with Working Vacations

open access: yesJournal of Mathematics
This work examines a new class of working vacation queueing models that contain regular (original) and retrial waiting queues. Upon arrival, a customer either starts their service instantly if the server is available, or they join the regular queue if ...
M. Sundararaman   +2 more
doaj   +1 more source

Multi-Server Two-Way Communication Retrial Queue Subject to Disaster and Synchronous Working Vacation

open access: yesAlgorithms
This research analyzes a multi-server retrial queue with two types of calls: working vacation and working breakdown. The incoming call may enter the retrial queue and attempt to seize a server after a random delay if all the servers are unavailable upon ...
Tzu-Hsin Liu, He-Yao Hsu, Fu-Min Chang
doaj   +1 more source

Tailored Covalent Organic Frameworks Enable the Encapsulation of Living Cells to Produce Rare Ginsenoside

open access: yesAdvanced Science, EarlyView.
This work reports the in situ fabrication of Escherichia coli@covalent organic frameworks (E. coli@COFs) in phosphate‐buffered saline. The COFs form an exoskeleton on E. coli, protecting intracellular β‐glucosidase (Ssbgl) while enhancing mass transfer.
Fengmei Liu   +6 more
wiley   +1 more source

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