Results 81 to 90 of about 139,654 (290)

General‐Purpose Hexagonal Programmable Photonic Integrated Circuit with a >30 GHz Free Spectral Range

Laser &Photonics Reviews, EarlyView.
A compact and low insertion loss programmable photonic circuit is demonstrated based on a 7‐cell hexagonal waveguide mesh with a large free spectral range (FSR) of 31 GHz for a 6‐gate ring resonator configuration. Vernier rings and a dual‐injected ring configuration are demonstrated on this circuit with a further improved FSR of 93 GHz.
Yu Zhang, Xiangfeng Chen, Lukas Van Iseghem, Iman Zand, Hasan Salmanian, Antonio Ribeiro, Wim Bogaerts   +6 more
wiley   +1 more source

Chemical evolution in the environment of intermediate mass young stellar objects: NGC7129--FIRS2 and LkH$\alpha$234

, 2004
We have carried out a molecular survey of the Class 0 IM protostar NGC 7129 -- FIRS 2 (hereafter FIRS 2) and the Herbig Be star LkH$\alpha$ 234 with the aim of studying the chemical evolution of the envelopes of intermediate-mass (IM) young stellar ...
Bachiller, R., Caselli, P., Fuente, A., Henkel, C., Rizzo, J. R.   +4 more
core  

Ultrahigh‐Order Harmonic Mode‐Locked Optoelectronic Oscillator

Laser &Photonics Reviews, EarlyView.
This article demonstrates a record‐breaking microwave frequency comb generator using an ultrahigh‐harmonic‐order mode‐locked optoelectronic oscillator. By integrating dual recirculating loops into a low‐coherence system, the researchers achieved a harmonic order of 956 with superior noise suppression.
Zhuoran Wang, Santiago Bernal, David V. Plant, Lawrence R. Chen   +3 more
wiley   +1 more source

Fetal systemic inflammatory response syndrome, thromboinflammation and neonatal septic shock: pathogenesis, diagnostics and treatment

Акушерство, гинекология и репродукция
The article is dedicated to outlining the pathogenic mechanisms, diagnostic criteria, and treatment of systemic inflammatory response syndrome (SIRS), thromboinflammation, and septic shock in fetuses and newborns. SIRS is a body hyperreaction to external
V. O. Bitsadze, J. Kh. Khizroeva, M. V. Tretyakova, N. A. Makatsariya, R. I. Gabidullina, A. V. Mostovoi, A. L. Karpova, A. E. Voynovskiy, M. G. Novosartyan, A. V. Lazarchuk, A. R. Khisamieva, A. Yu. Tatarintseva, A. V. Vorobev, K. V. Agasyan, D. L. Kapanadze, M. S. Zainulina, V. N. Serov, D. V. Blinov, Jean-Christophe Gris, P. Van Dreden, I. Elalamy, G. Gerotziafas, A. D. Makatsariya   +22 more
doaj   +1 more source

How energy conservation limits our measurements

, 2014
Observations in Quantum Mechanics are subject to complex restrictions arising from the principle of energy conservation. Determining such restrictions, however, has been so far an elusive task, and only partial results are known. In this paper we discuss
Navascues, Miguel, Popescu, Sandu
core   +1 more source

Synergistic Multi‐Strategy Engineering of Temperature‐Responsive Self‐Trapped Excitons in Tin‐Based Double Perovskite Nanocrystals Enables High‐Sensitivity Fluorescence Thermometry

Laser &Photonics Reviews, EarlyView.
Bi3+‐doped Cs2SnCl6 nanocrystals are engineered to deliver highly temperature‐responsive self‐trapped exciton emission, achieving record thermal sensitivity at elevated temperatures. A temperature‐induced dual‐STE excited state landscape enables reversible thermochromism, while a dual‐parameter calibration combining fluorescence lifetime and CIE‐y ...
Sujun Ji, Shikai Chen, Boyu Zhang, Dandan Wang, Yuyao Wei, Qiao Li, Weiqiang Wang, Yao Guo, Hua Li, Jibin Zhang, Huān Bì, Junpeng Xue, Shuzi Hayase, Yongge Yang, Yusheng Li, Feng Liu, Qing Shen   +16 more
wiley   +1 more source

Pinguicula brendae (Lentibulariaceae) sp. nov., a carnivorous plant from a tropical montane cloud forest in Hidalgo, Mexico

Nordic Journal of Botany, EarlyView.
A new species of Lentibulariaceae, Pinguicula brendae Rodríguez‐Ramírez, H.Shimai & A.R. Andrés‐Hernández, is described based on its unique morphological characteristics. This species is restricted to limestone rock walls in the San Bartolo Tutotepec municipality, central‐eastern Hidalgo, Mexico, where it inhabits a single locality on vertical, north ...
Ernesto C. Rodríguez‐ Ramírez, Hiro Shimai, Agustina R. Andrés‐ Hernández   +2 more
wiley   +1 more source

Rethinking Public Administration Reform: Institutional Layering of Bureaucratic, Managerial and Community Logics Over Time in Nigeria's Tax Administration

Public Administration and Development, EarlyView.
ABSTRACT The reform of public institutions has attracted sustained attention in both scholarship and policymaking. Increasingly, however, there is growing recognition that reforms are rarely implemented in an institutional vacuum. Instead, new reforms are layered onto existing arrangements, producing hybrid institutional landscapes shaped by prior ...
Edidiong Bassey
wiley   +1 more source

What does coexistence mean? Insight from place‐based trajectories of pastoralists and bears encounters in the Pyrenees

People and Nature, EarlyView.
Abstract The recovery of large carnivores in Europe raises issues related to sharing landscape with humans. Beyond technical solutions, it is widely recognized that social factors also contribute to shaping coexistence. In this context, scholars increasingly stress the need to adopt place‐based approaches by analysing how humans and wildlife interact ...
Alice Ouvrier, Manon Culos, Sylvie Guillerme, Antoine Doré, Helene Figari, John D. C. Linnell, Pierre‐Yves Quenette, Ruppert Vimal   +7 more
wiley   +1 more source

Spatial pattern of Norway spruce and silver fir natural regeneration in uneven-aged mixed forests of northeastern Bohemia

Journal of Forest Science, 2008
Two permanent sample plots (both 0.25 ha) were established in a mixed forest in the Orlické hory Mts. Protected Landscape Area (northeastern Bohemia) to analyze the natural regeneration of Norway spruce (Picea abies [L.] Karst.) and silver fir (Abies ...
Š. Hofmeister, M. Svoboda, J. Souček, S. Vacek   +3 more
doaj   +1 more source