10-kHz PLIF Thermometry for High-speed Jet Flame using Single Burst-mode OPO

EphA4 receptors play an important role in axon guidance during development. Disrupting the expression of these receptors in mice has been shown to modify neuronal connections in the spinal cord and results in the production of a characteristic hopping gait. The EphA4-null mouse has been used in numerous investigations aimed at establishing mechanisms responsible for patterning motor activity during walking. However, there have been no detailed behavioral or electrophysiological studies on adult EphA4-null mice. We used high-speed video recordings to determine the coordination of leg movements during locomotion in adult EphA4-null mice. Our data show that the hopping movements of the hind legs are not always associated with synchronous movements of forelegs. The coupling between the forelegs is weak, resulting in changes in their phase relationship from step to step. The synchronous coordination of the hind legs can switch to an alternating pattern for a short period of time during recovery from isoflurane anesthesia. Comparison of the kinematics of hind leg movements in EphA4-null mice and wild-type animals shows that besides the synchronous coordination in EphA4-null mice, the swing durations and the swing amplitude are shorter. Electromyographic recordings from a knee extensor muscle show double bursting in the EphA4-null animals but single bursts in wild types. This double burst changes to single-burst activity during swimming and when hind legs are stepping in alternation. These observations suggest an influence of sensory feedback in shaping the pattern of muscle activity during locomotion in the mutant animals. Our data give the first detailed description of the locomotor behavior of an adult mouse with genetically manipulated spinal networks.

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Recent Advances in High-energy, Extended-duration Burst-mode Laser Technology for High-speed Applications in Turbulent Flows

Imaging and Applied Optics 2014 ◽

10.1364/lacsea.2014.lm4d.3 ◽

2014 ◽

Author(s):

Joseph D. Miller ◽

Mikhail N. Slipchenko ◽

Terrence R. Meyer ◽

Sukesh Roy ◽

James R. Gord

Keyword(s):

Turbulent Flows ◽

High Speed ◽

High Energy ◽

Laser Technology ◽

Mode Laser ◽

Burst Mode ◽

Recent Advances ◽

Extended Duration

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Over-Sampling based Burst-mode CDR Technology for High-speed TDM-PON Systems

Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011 ◽

10.1364/ofc.2011.otht3 ◽

2011 ◽

Cited By ~ 7

Author(s):

Naoki Suzuki ◽

Kenichi Nakura ◽

Takeshi Suehiro ◽

Masamichi Nogami ◽

Seiji Kosaki ◽

...

Keyword(s):

High Speed ◽

Burst Mode

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High Speed OH PLIF Measurements of Combustor Effusion Films in a High Pressure, Liquid Fueled Combustor

10.1115/gt2021-59306 ◽

2021 ◽

Author(s):

Aravind Chandh ◽

Shivam Patel ◽

Oleksandr Bibik ◽

Subodh Adhikari ◽

David Wu ◽

...

Keyword(s):

High Speed ◽

Laser Sheet ◽

Turbulent Flame ◽

Combustion Products ◽

Elevated Pressure ◽

Inlet Temperature ◽

Lean Burn ◽

Jet Flame ◽

Reduction Techniques ◽

Planar Laser

Abstract This paper presents measurements of 10 kHz OH planar laser induced fluorescence (PLIF) with an objective to study the interaction of effusion cooling with the flame and hot combustion products in the liquid fueled combustor. The combustor rig is a single sector representation a rich-burn/quick-quench/lean-burn (RQL) configuration. It consists of a swirl nozzle, dilution, and effusion jets. The rig is operated under realistic aircraft conditions, including elevated combustor inlet temperature, and elevated pressure. The PLIF laser sheet was arranged perpendicular and parallel to the liner at distinct liner locations. Parametric variations of important parameters, namely equivalence ratio, and effusion cooling air blowing ratio are conducted to investigate their effect on flame-effusion jet interactions. The PLIF images were analyzed using several data reduction techniques to de-noise the images and identify patterns in the effusion jet-flame interactions. Results show that the effusion jets are highly unsteady, interacting strongly with the turbulent flame from the swirl nozzle and the dilution jets. This work is an extension of recent effusion film mixing studies that were performed with acetone PLIF under non-reacting conditions.

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Burst-Mode Error Distribution and Mitigation in DSP-Assisted High-Speed PONs

Journal of Lightwave Technology ◽

10.1109/jlt.2019.2950941 ◽

2020 ◽

Vol 38 (4) ◽

pp. 754-760 ◽

Cited By ~ 1

Author(s):

Frank J. Effenberger ◽

Huaiyu Zeng ◽

Andy Shen ◽

Xiang Liu

Keyword(s):

High Speed ◽

Error Distribution ◽

Burst Mode

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Sensitivity improvement techniques for high-speed burst-mode photoreceivers

42nd Midwest Symposium on Circuits and Systems (Cat. No.99CH36356) ◽

10.1109/mwscas.1999.867283 ◽

2003 ◽

Author(s):

A. Boyogueno Bende

Keyword(s):

High Speed ◽

Burst Mode ◽

Sensitivity Improvement

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ELECTRONICS FOR HIGH SPEED, BURST MODE OPTICAL COMMUNICATIONS

International Journal of High Speed Electronics and Systems ◽

10.1142/s0129156490000125 ◽

1990 ◽

Vol 01 (03n04) ◽

pp. 223-243 ◽

Cited By ~ 10

Author(s):

R.G. SWARTZ ◽

Y. OTA

Keyword(s):

Communication Systems ◽

High Speed ◽

Data Communication ◽

Optical Fiber Communication ◽

Digital Data ◽

Optical Data ◽

Data Link ◽

Fiber Communication ◽

Burst Mode ◽

Multiple Channel

Electronics for burst mode data communication over an optical data link will contribute to wider acceptance of photonic technology. This paper describes the concepts and difficulties inherent in burst mode optical communication systems, and proposes a new solution employing an ultra-high speed, high accuracy peak detector. Sensitivity penalties associated with this technique are reviewed. The method was implemented in an optical receiver with dc to 500 Mb/s operation, and at 200 Mb/s, demonstrates an isolated pulse sensitivity of −29.5 dBm, and pulse width distortion less than lns. An example application, the Multiple channel Optical Data LINK (MODLINK), is described: a fully dc-coupled, 12 parallel channel digital data link system designed for high speed optical fiber communication at bit rates ranging from dc to 200 Mb/s per channel, applicable at distances of centimeters to over 3 km.

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