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52 papers found.
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Distributed Vibration Sensor With Laser Phase-Noise Immunity by Phase-Extraction φ-OTDR

We have demonstrated a distributed vibration sensor based on phase-sensitive optical time-domain reflectometer (φ-OTDR) system exhibiting immunity to the laser phase noise. Two laser sources with different linewidth and phase noise levels are used in the φ-OTDR system, respectively. Based on the phase noise power spectrum density of both lasers, the laser phase is almost...

A New Shooting Bouncing Ray Method for Composite Scattering from a Target above the Electrically Large Scope Sea Surface

, Xidian University, Xi’an 710071, China 2Air and Missile Defense College, Air Force Engineering University, Xi’an 710051, China Correspondence should be addressed to Peng Peng; moc.361@naidixgnepgnep ... Received 25 July 2017; Accepted 8 November 2017; Published 29 November 2017 Academic Editor: Flavia Grassi Copyright © 2017 Peng Peng and Guo Lixin. This is an open access article distributed under the

Reliable Approach for EM Scattering Calculation from Sea Surface Covered with Foams Based on MFBM and VRT Theory

A reliable approach based on modified facet-based model and Vector Radiative Transfer theory is presented to calculate electromagnetic scattering from a particular electrically large sea surface superimposed with foams, which can handily give both monostatic and bistatic scattering results and could be applied to synthetic aperture radar imagery simulation. The facet model is...

A Review of Surgical Outcomes and Advances for Macular Holes

November 2017; Revised 28 January 2018; Accepted 18 February 2018; Published 18 April 2018 Academic Editor: Toshihide Kurihara Copyright © 2018 Peng-peng Zhao et al. This is an open access article

A Review of Surgical Outcomes and Advances for Macular Holes

November 2017; Revised 28 January 2018; Accepted 18 February 2018; Published 18 April 2018 Academic Editor: Toshihide Kurihara Copyright © 2018 Peng-peng Zhao et al. This is an open access article

Elucidating the Performance Limitations of Lithium-ion Batteries due to Species and Charge Transport through Five Characteristic Parameters

Underutilization due to performance limitations imposed by species and charge transports is one of the key issues that persist with various lithium-ion batteries. To elucidate the relevant mechanisms, two groups of characteristic parameters were proposed. The first group contains three characteristic time parameters, namely: (1) te, which characterizes the Li-ion transport rate...

Automatic Anterior Lamina Cribrosa Surface Depth Measurement Based on Active Contour and Energy Constraint

conferences. His recent research interests include computer vision, medical image analysis, and large-scale medical image processing. Peng Peng is a Master student in School of Information Science and

Sphingosine 1-phosphate receptor 1 (S1PR1) agonist CYM5442 inhibits expression of intracellular adhesion molecule 1 (ICAM1) in endothelial cells infected with influenza A viruses

Background Influenza A virus infection and its complications effect a large population worldwide. Endothelial cells are an important component in lung inflammation caused by influenza A virus infection. The roles of endothelial sphingosine 1-phophate receptor 1 (S1PR1) in the regulation of molecules involved in leukocyte recruitment during influenza A virus infection still remain...

Comparative study on the corrosion behavior of X52, 3Cr, and 13Cr steel in an O2–H2O–CO2 system: products, reaction kinetics, and pitting sensitivity

The corrosion behaviors of X52, 3Cr low-alloy steel, and 13Cr stainless steel were investigated in an O2–H2O–CO2 environment at various temperatures and O2–CO2 partial-pressure ratios. The results showed that the corrosion rates of X52, 3Cr, and 13Cr steels increased with increasing temperature. The corrosion rates slowly increased at temperatures less than 100°C and increased...

Knockdown of NIK and IKKβ-Binding Protein (NIBP) Reduces Colorectal Cancer Metastasis through Down-Regulation of the Canonical NF-κΒ Signaling Pathway and Suppression of MAPK Signaling Mediated through ERK and JNK

Background Despite the identification of many signaling pathways involved in colorectal cancer (CRC) tumorigenesis, metastatic CRC still remains one of the major causes of cancer related death. NIK and IKKβ-binding protein (NIBP) is one of the key regulators of the NF-κB signaling pathway, which has been implicated in CRC metastasis. The aim of this study was to investigate the...

Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application

The phosphor-converted warm W-LED have being rapidly developed due to the stringent requirements of general illumination. Here, we utilized a strategy to synergistically enhance the red region and emission intensity of novel Eu-activated yellow-emitting LaSiO2N phosphors. This was realized by predicting optimum crystal structure, and governing the concentration of doping ions as...

Risk factors of postoperative pancreatic fistula in patients after distal pancreatectomy: a systematic review and meta-analysis

Foundation of China (81170336, 81272239). Author Contributions Dr. Yi Miao designed the study. Dr. Yun-Peng Peng performed the study and wrote the paper. Dr. Xiao-Le Zhu, Ling-Di Yin, and Yi Zhu assessed the

Detachment of secondary dendrite arm in a directionally solidified Sn-Ni peritectic alloy under deceleration growth condition

In order to better understand the detachment mechanism of secondary dendrite arm during peritectic solidification, the detachment of secondary dendrite arm from the primary dendrite arms in directionally solidified Sn-36at.%Ni peritectic alloys is investigated at different deceleration rates. Extensive detachment of secondary dendrite arms from primary stem is observed below...

Effectiveness and Safety of Transcatheter Patent Foramen Ovale Closure for Migraine (EASTFORM) Trial

Neurology and Neuroscience Center, the First Hospital of Jilin University, Changchun, ChinaYing-qi Xing, Yu-Zhu Guo, Zhen-Ni Guo, Peng-Peng Niu & Yi YangDepartment of Cardiac Surgery, the First Hospital of ... Research journals • PubMed • Google ScholarSearch for Peng-Peng Niu in:Nature Research journals • PubMed • Google ScholarSearch for Yi Yang in:Nature Research journals • PubMed • Google Scholar Contributions

Discrete Sliding Mode Control for Hypersonic Cruise Missile

A discrete variable structure control (DVSC) with sliding vector is presented to track the velocity and acceleration command for a hypersonic cruise missile. In the design an integrator is augmented to ensure the tracking with zero steady-state errors. Furthermore the sliding surface of acceleration is designed using the error of acceleration and acceleration rate to avoid the...

Discrete Sliding Mode Control for Hypersonic Cruise Missile

A discrete variable structure control (DVSC) with sliding vector is presented to track the velocity and acceleration command for a hypersonic cruise missile. In the design an integrator is augmented to ensure the tracking with zero steady-state errors. Furthermore the sliding surface of acceleration is designed using the error of acceleration and acceleration rate to avoid the...

Discrete Sliding Mode Control for Hypersonic Cruise Missile

A discrete variable structure control (DVSC) with sliding vector is presented to track the velocity and acceleration command for a hypersonic cruise missile. In the design an integrator is augmented to ensure the tracking with zero steady-state errors. Furthermore the sliding surface of acceleration is designed using the error of acceleration and acceleration rate to avoid the...

The Expression and Prognostic Roles of MCMs in Pancreatic Cancer

Objectives Minichromosome maintenance (MCM) proteins play important roles in DNA replication by interacting with other factors which participate in the regulation of DNA synthesis. Abnormal over-expression of MCMs was observed in numerous malignancies, such as colorectal cancer. However, the expression of MCMs in pancreatic cancer (PC) was less investigated so far. This study was...

Synthesis of vanadium-based catalysts and their excellent catalytic behaviors on dehydrogenation of C4 hydrocarbons

In this paper, vanadium-based catalysts made from commercial γ-alumina (V1 series) and from pseudo-boehmite (V2 series) were, respectively, prepared via impregnation method. The samples were characterized and evaluated by various characterization techniques (e.g. X-ray diffraction, N2 adsorption–desorption isotherms, ammonia temperature programmed desorption, and hydrogenation...