Results 11 to 20 of about 53,156,886 (365)

Effects of Water Deficits on Prosopis tamarugo Growth, Water Status and Stomata Functioning

open access: yesPlants, 2020
The effect of water deficit on growth, water status and stomatal functioning of Prosopis tamarugo was investigated under controlled water conditions. The study was done at the Antumapu Experiment Station of the University of Chile.
Alson Time, Edmundo Acevedo
doaj   +1 more source

Adapting to a Global Health Challenge: Managing Antimicrobial Resistance in the Nordics

open access: yesPolitics and Governance, 2020
This article explores the adaptation of Norway and Sweden to one of the major challenges to global public health, antimicrobial resistance (AMR). Guided by assumptions derived from institutional theory, the article investigates whether, and, if so, how ...
Martin Stangborli Time, Frode Veggeland
doaj   +1 more source

Demonstration of a time scale with the 87Sr optical lattice clock at NTSC

open access: yesAIP Advances, 2023
Optical clocks have been applied to the generation of time scales since they provide superb uncertainty and instability in recent years. This paper presents the simulations about the impact of the optical clock’s operational strategies on the performance
Qinfang Xu   +6 more
doaj   +1 more source

Time and its arrow: an empiricist's perspective [PDF]

open access: yes, 2021
The nature of time has beguiled philosophers for nearly three millennia. There are myriad types of time including cosmological time, biological time, psychological time, physical time, historical time, and even theological time. My brief essay concerns time in physics and I hope that the pragmatism of an experimental physicist might help provide a ...
arxiv   +1 more source

The effect of milrinone on mortality in adult patients who underwent CABG surgery: a systematic review of randomized clinical trials with a meta-analysis and trial sequential analysis

open access: yesBMC Cardiovascular Disorders, 2020
Background As an inodilator, milrinone is commonly used for patients who undergo coronary artery bypass graft (CABG) surgery because of its effectiveness in decreasing the cardiac index and mitral regurgitation.
Yu-shan Ren   +7 more
doaj   +1 more source

Demonstration of the Systematic Evaluation of an Optical Lattice Clock Using the Drift-Insensitive Self-Comparison Method

open access: yesApplied Sciences, 2021
The self-comparison method is a powerful tool in the uncertainty evaluation of optical lattice clocks, but any drifts will cause a frequency offset between the two compared clock loops and thus lead to incorrect measurement result.
Chihua Zhou   +4 more
doaj   +1 more source

A Parameterized Algebra for Event Notification Services [PDF]

open access: yes, 2002
Event notification services are used in various applications such as digital libraries, stock tickers, traffic control, or facility management. However, to our knowledge, a common semantics of events in event notification services has not been defined so
Hinze, Annika, Voisard, Agnès
core   +2 more sources

brak

open access: yesPraktyka Teoretyczna, 2010
brak
Time for commons Time for commons
doaj   +1 more source

Online Learning: A Panacea in the Time of COVID-19 Crisis

open access: yesJournal of Educational Technology Systems, 2020
Educational institutions (schools, colleges, and universities) in India are currently based only on traditional methods of learning, that is, they follow the traditional set up of face-to-face lectures in a classroom.
S. Dhawan
semanticscholar   +1 more source

Difference-in-Differences with Multiple Time Periods [PDF]

open access: yesJournal of Econometrics, 2018
Difference-in-Differences (DID) is one of the most important and popular designs for evaluating causal effects of policy changes. In its standard format, there are two time periods and two groups: in the first period no one is treated, and in the second ...
Brantly Callaway   +1 more
semanticscholar   +1 more source

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