Results 71 to 80 of about 4,055,148 (351)

Optical Fiber Amplifiers: Optimization and PerformanceEvaluation

Diyala Journal of Engineering Sciences, 2019
This work demonstrates the simulation of two different types of optical fiber amplifiers (OFA) utilizing OptiSystem–10, namely, 3 m length of erbium doped fiber amplifier (EDFA) and 7 km length of Raman fiber amplifier (RFA).
A. k. Abass, Mohammed J. Abdul-Razak, Haneen H. Mohammed, Suad M. Kadhim, Mohammed A. Salih   +4 more
doaj   +1 more source

The Unexpected Role of Evolving Longitudinal Electric Fields in Generating Energetic Electrons in Relativistically Transparent Plasmas

, 2018
Superponderomotive-energy electrons are observed experimentally from the interaction of an intense laser pulse with a relativistically transparent target.
Arefiev, A. V., Chen, H., Dollar, F., Hazi, A. U., Maksimchuk, A., Manuel, M. J. -E., Marley, E., Nazarov, W., Williams, G. J., Willingale, L., Zhao, T. Z., Zulick, C.   +11 more
core   +1 more source

Argon laser angioplasty with a laser probe [PDF]

Journal of Vascular Surgery, 1987
A preliminary basic study of argon laser angioplasty with the use of a specially designed probe is presented. Arterial specimens were harvested from 10 amputated lower extremities. The studies included the evaluation of coaxial laser angioplasty in 10 partially or totally occluded arteries; the observation of the effect of perpendicularly applied laser
Y, Yang, M, Hashizume, D, Arbutina, L F, Milewski, J, DuPree, T, Matsumoto   +5 more
openaire   +2 more sources

Expanding Hereditary Spastic Paraplegias Limits: Biallelic SPAST Variants in Cerebral Palsy Mimics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegias (HSP) are rare neurodegenerative disorders marked by spasticity and lower limb weakness. The most common type, SPG4, is usually autosomal dominant and caused by SPAST gene variants, typically presenting as pure HSP.
Gregorio A. Nolasco, Mònica Roldán, Yalda Jamshidi, Ioannis Georvasilis, Rocío Jadraque Rodríguez, Reza Boostani, Ali Shoeibi, Lluís Armengol, Anna Codina, Ehsan Ghayoor Karimiani, Cristina Hernando‐Davalillo, Loreto Martorell, María Luisa Ramírez Almaraz, Jordi Muchart, Carlos Ortez, Andrés Nascimento, Roser Urreizti, Daniel Natera‐de Benito, Mercedes Serrano   +18 more
wiley   +1 more source

Magnetized fast isochoric laser heating for efficient creation of ultra-high-energy-density states

Nature Communications, 2018
It is desirable to deposit more energy in the dense plasma core to trigger the fusion ignition. Here the authors demonstrate enhanced energy coupling from laser to plasma core by using solid targets and guiding the transport of relativistic electron beam
Shohei Sakata, Seungho Lee, Hiroki Morita, Tomoyuki Johzaki, Hiroshi Sawada, Yuki Iwasa, Kazuki Matsuo, King Fai Farley Law, Akira Yao, Masayasu Hata, Atsushi Sunahara, Sadaoki Kojima, Yuki Abe, Hidetaka Kishimoto, Aneez Syuhada, Takashi Shiroto, Alessio Morace, Akifumi Yogo, Natsumi Iwata, Mitsuo Nakai, Hitoshi Sakagami, Tetsuo Ozaki, Kohei Yamanoi, Takayoshi Norimatsu, Yoshiki Nakata, Shigeki Tokita, Noriaki Miyanaga, Junji Kawanaka, Hiroyuki Shiraga, Kunioki Mima, Hiroaki Nishimura, Mathieu Bailly-Grandvaux, João Jorge Santos, Hideo Nagatomo, Hiroshi Azechi, Ryosuke Kodama, Yasunobu Arikawa, Yasuhiko Sentoku, Shinsuke Fujioka   +38 more
doaj   +1 more source

Forage characteristics of Vicia sativa L. and Trifolium resupinatum L. in catch crop systems under Central European conditions

Plant, Soil and Environment, 2005
In a field experiment the development of dry matter yield and forage quality of the catch crop Vicia sativa L. compared with Trifolium resupinatum L. was investigated and the suitability for cultivation in a mixture with Lolium multiflorum ssp. gaudinii (
W. Opitz Von Boberfeld, E. Beckmann, H. Laser   +2 more
doaj   +1 more source

Growth Differentiation Factor 15 Elevation in the Central Nervous System Is Associated With Failure to Thrive in Alexander Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Alexander disease (AxD) is a severe neurodegenerative disorder caused by gain‐of‐function mutations in the gene for GFAP, which lead to protein aggregation and a primary astrocytopathy. Symptoms vary, but failure to thrive (FTT) and frequent emesis are common and cause significant morbidity. Here we investigate GDF15, a member of the
Tracy L. Hagemann, Michelle M. Sonsalla, Cora Luzinski, Fernando Zacahua, David A. Harris, Dudley W. Lamming, Albee Messing   +6 more
wiley   +1 more source

A política de dividendos como geradora de economia fiscal e do desenvolvimento do mercado de capitais: uma proposta criativa

RAE: Revista de Administração de Empresas, 1993
A fome fiscal do governo brasileiro tem sido reclamada constantemente pelo empresariado local. Apesar disso, e sabendo que a taxação dos dividendos não existe, ao mesmo tempo em que a sobre ganhos de capital foi instituída, podemos verificar que através ...
Jairo Laser Procianoy, Beatriz Trois Cunha Poli   +1 more
doaj  

Nitrogen transfers from Vicia sativa L. and Trifolium resupinatum L. to the companion grass and the following crop

Plant, Soil and Environment, 2005
The course of N-NO3- concentrations in soil, N transfer from the catch crops Vicia sativa L. and Trifolium resupinatum L. to the companion grass Lolium multiflorum ssp.
W. Opitz Von Boberfeld, E. Beckmann, H. Laser   +2 more
doaj   +1 more source

PHARAO Laser Source Flight Model: Design and Performances

, 2015
In this paper, we describe the design and the main performances of the PHARAO laser source flight model. PHARAO is a laser cooled cesium clock specially designed for operation in space and the laser source is one of the main sub-systems. The flight model
A. Pichon, B. Faure, C. Delaroche, D. Massonnet, F. Buffe, F. X. Esnault, Goujon D., J. P. Lelay, Lévèque T., O. Grosjean, Ott M., P. Béraud, P. Torresi, Ph. Laurent, S. Thomin, Schuldt T., T. Bomer, T. Lévèque   +17 more
core   +2 more sources