scholarly journals Twisted Jets from L1551 IRS5

2001 ◽  
Vol 200 ◽  
pp. 261-264
Author(s):  
Yoichi Itoh
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Spatial Variation ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Close Vicinity ◽  
Jet Structure ◽  
First Time ◽  
Bright Emission

We have carried out high-resolution near-infrared imaging observations of a protostar L1551 IRS 5 with the Subaru Telescope. The jet structure of IRS5 is resolved into two independent jets for the first time from the ground. Successive near-infrared spectroscopy has revealed that the jet emission is dominated by [Fe II] lines in the J and H-bands. While the visual-extinction reaches more than 20 mag in the close vicinity of IRS 5, it decreases rapidly at ∼1″ from IRS 5 and remains constant around 7 mag at larger distances. The twisted structure and bright emission knots are intrinsic to the jets, not due to a spatial variation of the extinction.

Noninvasive Assessment of Regional and Temporal Variations in Tissue Oxygenation by Near-Infrared Spectroscopy and Imaging

1997 ◽  
Vol 51 (2) ◽  
pp. 143-152 ◽  
Author(s):  
Michael G. Sowa ◽  
James R. Mansfield ◽  
Gordon B. Scarth ◽  
Henry H. Mantsch
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Tissue Oxygenation ◽  
Infrared Imaging ◽  
Temporal Variations ◽  
Tissue Oxygen Saturation ◽  
Venous Outflow ◽  
Fuzzy C Means Clustering ◽  
Time Courses

A combination of near-infrared spectroscopy and discrete wavelength near-infrared imaging is used to noninvasively monitor the forearm during periods of restricted blood outflow (venous outflow restriction) and interrupted blood inflow (ischemia). Multivariate analysis of image and spectral data time courses was used to identify highly correlated spectral and regional domains, while fuzzy C-means clustering of image time courses was used to reveal finer regional heterogeneities in the response of stressed tissues. Localized near-infrared spectroscopy was used to investigate the magnitude of the bulk changes in the tissue optical properties and the variation in tissue oxygenation saturation during venous outflow restriction and complete forearm ischemia. The imaging and spectroscopic analyses revealed highly localized regional variations in tissue oxygen saturation during forearm ischemia as compared to the more diffuse and global response of the forearm during venous outflow restriction.

scholarly journals Recognition of osmotolerant yeast spoilage in kiwi juices by near-infrared spectroscopy coupled with chemometrics and wavelength selection

RSC Advances ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 222-229 ◽  
Author(s):  
Chen Niu ◽  
Yahong Yuan ◽  
Hong Guo ◽  
Xin Wang ◽  
Xuan Wang ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Wavelength Selection ◽  
Svm Model ◽  
First Time ◽  
Osmotolerant Yeast

The study developed a NIR-SVM model for accurate recognition of osmotolerant yeasts in kiwi juice for the first time.

On-chip near-infrared spectroscopy of CO2 using high resolution plasmonic filter array

2016 ◽  
Vol 108 (22) ◽  
pp. 221106 ◽  
Author(s):  
Xinyuan Chong ◽  
Erwen Li ◽  
Kenneth Squire ◽  
Alan X. Wang
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Plasmonic Filter ◽  
Filter Array ◽  
On Chip

scholarly journals Intracranial Hematoma Detection by Near Infrared Spectroscopy in a Helicopter Emergency Medical Service: Practical Experience

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Patrick Schober ◽  
Sebastiaan M. Bossers ◽  
Lothar A. Schwarte
Keyword(s):  
Infrared Spectroscopy ◽  
Healthy Volunteers ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Improve Patient Care ◽  
Helicopter Emergency Medical Service ◽  
Intracranial Hematoma ◽  
Emergency Medical ◽  
Intracranial Hematomas ◽  
First Time

In (helicopter) emergency medical services, (H)EMS, the prehospital detection of intracranial hematomas should improve patient care and the triage to specialized neurosurgical hospitals. Recently, noninvasive detection of intracranial hematomas became possible by applying transcranial near infrared spectroscopy (NIRS). Herein, second-generation devices are currently available, for example, the Infrascanner 2000 (Infrascan), that appear suited also for prehospital (H)EMS applications. Since (H)EMS operations are time-critical, we studied the Infrascanner 2000 as a “first-time-right” monitor in healthy volunteers (n=17, hospital employees, no neurologic history). Further, we studied the implementation of the Infrascanner 2000 in a European HEMS organization (Lifeliner 1, Amsterdam, The Netherlands). The principal results of our study were as follows: The screening for intracranial hematomas in healthy volunteers with first-time-right intention resulted in a marked rate of virtual hematomas (false positive results, i.e., 12/17), rendering more time consuming repeat measurements advisable. The results of the implementation of the Infrascanner in HEMS suggest that NIRS-based intracranial hematoma detection is feasible in the HEMS setting. However, some drawbacks exist and their possible solutions are discussed. Future studies will have to demonstrate how NIRS-based intracranial hematoma detection will improve prehospital decision making in (H)EMS and ultimately patient outcome.

scholarly journals An in-depth look at the lunar crater Copernicus: Exposed mineralogy by high-resolution near-infrared spectroscopy

Icarus ◽  
2011 ◽  
Vol 213 (1) ◽  
pp. 43-63 ◽  
Author(s):  
Roberto Bugiolacchi ◽  
Urs Mall ◽  
Megha Bhatt ◽  
Susan McKenna-Lawlor ◽  
Marek Banaszkiewicz ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Lunar Crater
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