Results 31 to 40 of about 349,914 (309)

Analysis and Experimental Study of a Silicon Photonic Single MRM-Assisted MZI PAM-4 Modulator

IEEE Photonics Journal, 2017
We report on the analysis and experimental study of a silicon photonic single microring modulator (MRM) assisted Mach–Zehnder interferometer for high-speed four-level pulse amplitude modulation (PAM-4).
Rui Li, David Patel, Alireza Samani, Eslam El-Fiky, Yun Wang, Zhenping Xing, Luhua Xu, David V. Plant   +7 more
doaj   +1 more source

A Simplified Volterra Equalizer Based on System Characteristics for Direct Modulation Laser (DML)-Based Intensity Modulation and Direct Detection (IM/DD) Transmission Systems

Photonics, 2023
The nonlinear Volterra equalizer has been proved to be able to solve the problem of nonlinear distortion, but it has high computational complexity and is difficult to implement.
Zhongshuai Feng, Na Li, Wei Li, Peili He, Ming Luo, Qianggao Hu, Liyan Huang, Yi Jiang   +7 more
doaj   +1 more source

D-Shaped POF Sensors for Refractive Index Sensing—The Importance of Surface Roughness

Sensors, 2019
In this study the influence of the surface roughness on the transmission capacities of D-shaped plastic optical fibers (POFs) and sensors performance was investigated. Five D-shaped POF sensors were produced and characterized for refractive index sensing
Filipa Sequeira, Nunzio Cennamo, Alisa Rudnitskaya, Rogério Nogueira, Luigi Zeni, Lúcia Bilro   +5 more
doaj   +1 more source

Intensity-modulated radiotherapy - what is it? [PDF]

Cancer Imaging, 2004
Intensity-modulated radiotherapy (IMRT) is one of the most important recent developments in oncology. It enables precise conformation of the radiation dose to the target volume. It has the potential to significantly reduce long-term morbidity and improve local control.
Taylor, A, Powell, M E B
openaire   +2 more sources

A PRSZT Registry Analysis of Prognostic Factors Influencing Survival and Relapse Rates After Second Allogeneic Hematopoietic Stem Cell Transplantation in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT A second allogeneic (allo‐)hematopoietic stem cell transplantation (HSCT2) is a potential curative option for pediatric patients with acute lymphoblastic leukemia (ALL) following relapse after first allogeneic transplantation (HSCT1), but its efficacy is limited by high relapse rates and transplant‐related toxicity in highly pretreated ...
Ava Momm, Imme Haubitz, Rita Beier, Martin Zimmermann, Andrej Lissat, Peter Bader, Matthias Eyrich, Jan‐Henning Klusmann, Matthias Wölfl, Paul‐Gerhardt Schlegel, Verena Wiegering   +10 more
wiley   +1 more source

Transmission of 100-Gb/s PAM-6 Signal by Using DML Wavelength-Locked to Delay Interferometer

IEEE Photonics Journal
We experimentally demonstrate the transmission of 100-Gb/s 6-ary pulse amplitude modulation signal over 2-km standard single-mode fiber using a 1.55-μm directly-modulated laser (DML) wavelength-locked to a delay interferometer (DI).
Horyun Lee, Hoon Kim
doaj   +1 more source

On the General Error Event Probability Evaluation of Optical Intensity Modulation Schemes

IEEE Photonics Journal, 2022
Wireless intensity-modulated optical channels feature some very specific differences compared to wireless radio channels. These properties have a strong impact on the performance of digital modulation techniques.
Henrik Schulze, Peter A. Hoeher
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source