Results 81 to 90 of about 478,180 (342)

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Dyadic Probabilistic Shaping of PAM-4 and PAM-8 for Cost-Effective VCSEL-MMF Optical Interconnection

IEEE Photonics Journal, 2019
In this paper, dyadic probabilistic shaping (PS) for pulse amplitude modulation (PAM) has been investigated and experimentally demonstrated for intensity-modulation and direct-detection optical interconnection systems.
Lin Sun, Chang Wang, Jiangbing Du, Chenyu Liang, Wenjia Zhang, Ke Xu, Fan Zhang, Zuyuan He   +7 more
doaj   +1 more source

Smartphone microendoscopy for high resolution fluorescence imaging [PDF]

Journal of Innovative Optical Health Sciences, 2016
High resolution optical endoscopes are increasingly used in diagnosis of various medical conditions of internal organs, such as the cervix and gastrointestinal (GI) tracts, but they are too expensive for use in resource-poor settings.
Xiangqian Hong, Vivek K. Nagarajan, Dale H. Mugler, Bing Yu   +3 more
doaj   +1 more source

Modulation Format and Digital Signal Processing for IM-DD Optics at Post-200G Era

Journal of Lightwave Technology
200-Gb/s per lane intensity-modulation (IM) direct-detection (DD) optics are being commercialized to support 800G and 1.6T applications inside datacenters.
D. Che, X. Chen
semanticscholar   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Low Loss Hollow-Core Antiresonant Fiber With Nested Elliptical Cladding Elements

IEEE Photonics Journal, 2017
We design and investigate the optical properties of a novel hollow-core antiresonant fiber with nested elliptical cladding elements. This new structure shows low confinement loss even with a relatively small core.
Fan-Chao Meng, Bo-Wen Liu, Yan-Feng Li, Ching-Yue Wang, Ming-Lie Hu   +4 more
doaj   +1 more source

Dual-wavelength domain wall solitons in a fiber ring laser

, 2010
We report on the experimental observation of a new type of dark soliton in a fiber laser made of all normal group velocity dispersion fibers. It was shown that the soliton is formed due to the cross coupling between two different wavelength laser beams ...
Boudec, Coen, Dingyuan Tang, Emplit, Haelterman, Haelterman, Han Zhang, Iii, Kivshar, Luming Zhao, Malomed, Milián, Pitois, Sylvestre, Tang, Weiner, Xuan Wu, Zhang, Zhang   +18 more
core   +1 more source

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano, Giacomo Boffa, Maria Petracca, Marta Ponzano, Nicole Graziano, Claire Wigley, Claire Riley, Jonathan Howard, Pietro Bontempi, Sylvia Klineova, Fred Lublin, Matilde Inglese   +11 more
wiley   +1 more source

Experimental Investigation of Gain Offset Behavior of Feedforward-Controlled WDM AGC EDFA Under Various Dynamic Wavelength Allocations

IEEE Photonics Journal, 2016
Realizing dynamics in the optical layer is becoming more important for efficient optical communication networks such as protection switching in the optical domain or reconfiguring the optical layer to meet traffic fluctuations.
Kiyo Ishii, Junya Kurumida, Shu Namiki
doaj   +1 more source

Definition, analysis and development of an optical data distribution network for integrated avionics and control systems. Part 2: Component development and system integration [PDF]

Fiber optic transmission is emerging as an attractive concept in data distribution onboard civil aircraft. Development of an Optical Data Distribution Network for Integrated Avionics and Control Systems for commercial aircraft will provide a data ...
Morrison, R. J., Yen, H. W.
core   +1 more source