SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(van de Stadt H.) "

Sökning: WFRF:(van de Stadt H.)

  • Resultat 1-3 av 3
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • de Graauw, Th., et al. (författare)
  • The Herschel-Heterodyne Instrument for the Far-Infrared (HIFI)
  • 2010
  • Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 518, s. L6-
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims: This paper describes the Heterodyne Instrument for the Far-Infrared (HIFI) that was launched onboard ESA's Herschel Space Observatory in May 2009. Methods: The instrument is a set of 7 heterodyne receivers that are electronically tuneable, covering 480-1250 GHz with SIS mixers and the 1410-1910 GHz range with hot electron bolometer (HEB) mixers. The local oscillator (LO) subsystem comprises a Ka-band synthesizer followed by 14 chains of frequency multipliers and 2 chains for each frequency band. A pair of auto-correlators and a pair of acousto-optical spectrometers process the two IF signals from the dual-polarization, single-pixel front-ends to provide instantaneous frequency coverage of 2 × 4 GHz, with a set of resolutions (125 kHz to 1 MHz) that are better than 0.1 km s-1. Results: After a successful qualification and a pre-launch TB/TV test program, the flight instrument is now in-orbit and completed successfully the commissioning and performance verification phase. The in-orbit performance of the receivers matches the pre-launch sensitivities. We also report on the in-orbit performance of the receivers and some first results of HIFI's operations. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
  •  
2.
  •  
3.
  • Dieperink, Willem, et al. (författare)
  • Implementation of Boussignac continuous positive airway pressure in the coronary care unit : experiences and attitudes.
  • 2008
  • Ingår i: Heart & Lung. - : Elsevier BV. - 0147-9563 .- 1527-3288. ; 37:6, s. 449-54
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: Boussignac continuous positive airway pressure (BCPAP) delivered by face mask is useful for patients with acute cardiogenic pulmonary edema (ACPE). Although BCPAP is medically effective, we observed that not all suitable patients received it. In this descriptive, prospective, cohort study, we explored the experiences and attitudes of both patients and staff with BCPAP. METHODS: Patients were interviewed 12 to 48 hours after treatment with BCPAP. Nurses on the coronary care unit were interviewed on their knowledge, skills, experiences, and opinions concerning BCPAP. RESULTS: Of 117 patients with ACPE, 87 patients (74%) received BCPAP treatment. It was decided not to administer BCPAP in 30 patients with ACPE (26%). Patients who received BCPAP found that the reduction of dyspnea outweighed any discomfort. Barriers for the use of BCPAP were not related to nurses' skills but to the following: the nurses' belief that BCPAP created major discomfort, the lack of guidelines, the ultimate improvement of oxygenation without BCPAP, and the more labor-intensive treatment. CONCLUSION: Overestimation of patient discomfort by nurses and system-related factors impeded the use of BCPAP for all patients with ACPE.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-3 av 3

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy