Results 21 to 30 of about 10,915,540 (269)
Satellite Navigation, 2021 The BeiDou Navigation Satellite System (BDS) provides global Positioning, Velocity, And Timing (PVT) services that are widely used in various areas. The BDS satellites frequently need the orbit maneuvers due to various perturbations to keep satellites in
Rui Tu +5 more
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382 mW External-Cavity Frequency Doubling 461 nm Laser Based on Quasi-Phase Matching
Photonics, 2023 To rapidly improve strontium optical clocks, a high-power, high-efficiency, and high-beam-quality 461 nm laser is required. In blue lasers based on periodically poled KTiOPO4 crystals, the optical absorption in the crystals can induce thermal effects ...
Yingxin Chen +3 more
doaj +1 more source
Primitive TiderThis paper has provided an overview over the Viking Age burials containing textile- and cooking equipment, such as spindlewhorls, woolcombs, weaver`s baton, frying pans and loom weights in combination with weapons.
Lillian Time
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Sustainable Urban Drainage Systems: Themes of Public Perception—A Case Study
Land, 2022 Climate adaptation measures address the challenges that densification and climate change impose on the urban environment. Sustainable urban drainage system (SUDS) constructs include the introduction of natural elements, such as riparian buffers ...
Bridget Thodesen +2 more
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, 2010 Estimations of execution time are essential for design and development of safety critical embedded real-time systems, such as avionics, automotive and aerospace systems. In such systems, execution time is part of the functional specification, hence correct behaviour requires sufficiently powerful target hardware to meet deadlines or achieve required ...
Andreas Holzer +3 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Children with sickle cell disease (SCD) face multiple acute and chronic medical complications that may impact their quality of life as reported by patients themselves. Health‐related social needs (HRSNs), such as food and housing insecurity, are common in people with SCD, but the association between HRSNs and patient‐reported ...
Sarah J. Marks +5 more
wiley +1 more source
Experimental Evaluation of the Blackbody Radiation Shift in the Cesium Atomic Fountain Clock
Applied Sciences, 2022 The cesium atomic fountain clock is the world’s most accurate microwave atomic clock. The uncertainty of blackbody radiation (BBR) shift accounts for an increasingly large percentage of the uncertainty associated with fountain clocks and has become a key
Fan Yang +10 more
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Time and the other time: Trajectories of Fiji time [PDF]
History and Anthropology, 2018 This article looks into the valuation of time in Fiji with particular emphasis on ‘Fiji time’, an idiom typically employed in reference to unpunctuality or relaxing.
openaire +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Primary cutaneous anaplastic large cell lymphoma (pcALCL) is a rare pediatric CD30‐positive T‐cell lymphoproliferative disorder with an excellent prognosis, but its genomic drivers are poorly defined. We report three children with skin‐limited disease demonstrating striking molecular heterogeneity, including NPM::ALK, NUP214::FRK, and a novel ...
Shoshana Greenberger +7 more
wiley +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Combined oral contraceptive (COC) use in obese adult women dramatically increases the relative risk of developing a pulmonary embolism (PE). The risk of a PE in obese adolescent females taking contraceptives is currently unknown. The purpose of this investigation was to determine the effect of body mass index (BMI) and contraceptive
John Puetz, Joanne Salas
wiley +1 more source