A5100326976- Semiconductor Lasers and Optical Devices
- Pulsars and Gravitational Waves Research
- Photonic and Optical Devices
- Gamma-ray bursts and supernovae
- Semiconductor Quantum Structures and Devices
- Geophysics and Gravity Measurements
- Astrophysical Phenomena and Observations
- Advanced Fiber Laser Technologies
- Plant Diversity and Evolution
- Plant and Fungal Species Descriptions
- Optical Systems and Laser Technology
- Astronomical Observations and Instrumentation
- High-pressure geophysics and materials
- Spectroscopy and Laser Applications
- Advanced Fiber Optic Sensors
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Quantum Dots Synthesis And Properties
- Stellar, planetary, and galactic studies
- Advanced Semiconductor Detectors and Materials
- Lightning and Electromagnetic Phenomena
- Astrophysics and Star Formation Studies
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Thermodynamic Systems and Engines
- Astronomy and Astrophysical Research
- Infrared Target Detection Methodologies
Hohai University
2025
Changchun Institute of Optics, Fine Mechanics and Physics
2011-2024
Chinese Academy of Sciences
2015-2024
Xinjiang Institute of Ecology and Geography
2015-2024
Shandong University of Technology
2024
Yunnan University
2023-2024
Xinjiang Agricultural University
2024
National Astronomical Observatories
2020-2023
University of Chinese Academy of Sciences
2010-2022
Beijing Anzhen Hospital
2022
Arnold transformation is applied widely in digital image scramble because of its periodicity. But we will waste lots time when used periodicity to get the anti-Arnold algorithm, especially it picture with big degree. So, this paper, use a new algorithm which got by solving equation groups. By way, needn't figure out degree, save time.
In this work, we construct the largest dataset for multimodal pretraining in Chinese, which consists of over 1.9TB images and 292GB texts that cover a wide range domains. We propose cross-modal method called M6, referring to Multi-Modality Multitask Mega-transformer, unified on data single modality multiple modalities. scale model size up 10 billion 100 parameters, build pretrained Chinese. apply series downstream applications, demonstrate its outstanding performance comparison with strong...
Obtaining accurate and precise masses ages for large numbers of giant stars is great importance unraveling the assemblage history Galaxy. In this paper, we estimate 6940 red branch (RGB) with asteroseismic parameters deduced from Kepler photometry stellar atmospheric derived LAMOST spectra. The typical uncertainties mass a few per cent, that age ∼20 cent. sample reveal two separate sequences in age–[α/Fe] relation – high-α sequence older than ∼8 Gyr low-α composed ranging younger 1 to 11...
Narrow-linewidth lasers mainly depend on the development of advanced laser linewidth measurement methods for related technological progress as key devices in satellite communications, precision measurements, ultra-high-speed optical and other fields. This manuscript provides a theoretical analysis characterization based beat frequency power spectrum phase noise calculations, elaborates existing research technologies. In addition, to address technical challenges complex systems that commonly...
Abstract Transparent exopolymer particles (TEPs) are crucial for enhancing the flocculation of microplastics (MPs). However, quantitatively evaluating influence TEP on process and addressing these effects in a model challenging. In this study, three freshwater microalgae ( Scenedesmus sp., Aulacoseira granulata , Melosira varians ) with various levels production were incubated to investigate biologically mediated MPs mixing chamber. The results revealed that microalgal species significantly...
We use the Onsager principle to derive a two-phase continuum formulation for hydrodynamics of electrorheological (ER) fluid, consisting dielectric microspheres dispersed in an insulating liquid. Predictions theory are excellent agreement with experiments. In particular, it is shown that whereas usual configuration applied electric field being perpendicular shearing direction can lead shear thinning at high rates and thus loss ER effect, interdigitated, alternating electrodes eliminate...
Fast Radio Bursts (FRBs) are the short, strong radio pulses lasting several milliseconds. They subsequently identified, for most part, as emanating from unknown objects at cosmological distances. At present, over one hundred FRBs have been verified, classified into two groups: repeating bursts (20 samples) and apparently non-repeating (91 samples). Their origins, however, still hotly debated. Here,we investigate statistical classifications groups of samples to see if different origins by...
Abstract Although traditional quantum-confined nanostructures e.g. regular quantum wells or dots have achieved huge success in the field of semiconductor lasers for past decades, these are encountering difficulty enhancing device performance to a higher level due their inherent gain bottleneck. In this paper, we proposing new super-gain nanostructure based on self-assembled well-wire complex energy-band engineering with InGaAs-based materials break through existing The is constructed by...
Finite element analysis (FEA) can be implemented along with Agent-based model (ABM) to investigate the biomechanical and mechanobiological mechanisms of pathophysiological processes. However, traditional ABM-FEA approaches are often partially coupled lack feedback responses from biological analysis. To overcome this problem, a fully framework is developed in paper by linking macro-scale cell-scale modules bi-directionally. Numerical studies in-stent restenosis process conducted using...
The evolutions of a neutron star’s rotation and magnetic field (B-field) have remained unsolved puzzles for over half century. We ascribe the rotational braking torques pulsar to both components, standard dipole radiation (MDR) particle wind flow (MDR + Wind, hereafter named MDRW), which we apply Crab (B0531 21), only source with known age long-term continuous monitoring by radio telescope. Based on above presumed simple spin-down torques, obtain exact analytic solution evolution pulsar,...
A dense spectral multiplexing structure based on the reflective volume Bragg gratings is introduced to realize diode laser with an ultra-narrow channel spacing of 1.5 nm. With combination polarization and coarse multiplexing, a source producing 2045 W power from output fiber core diameter 105 µm NA 0.2 achieved at injection current 10 A. The electro-optical optical-optical efficiency 42% 76%, respectively. Experimental results demonstrate ability VBG high brightness.
ABSTRACT The merger event of double neutron star (DNS) system (GW170817) was detected by the gravitational-wave (GW) detectors (Advanced LIGO and Advanced Virgo) in 2017 for first time, so their mass distribution has become a significant topic with new round GW hunting (O3) 2019. A few models (e.g. Gaussian, two-Gaussian, or mixture-Gaussian) were adopted to draw observed Galactic DNS systems, however, there is no confirmed model now due small size samples (N < 20). Here we focus on...
In information times, the website Management is becoming hot topic. And Search Engine has more influence on websites, so many managers are trying to make efforts for Optimization (SEO). But only do scientifically exploring key factors of SEO, Could avoid unnecessary invest and help achieve prospective effects. So paper study affecting SEO way how then putting forward approach bring it into effect by Empirical Research based Sis Sigma. The purpose websites improve their fames create economic...
Abstract It is well known that the laser diode performance will inevitably deteriorate when device heated. has been a difficult issue to solve date. In this letter, we are reporting new solution improve high-temperature of diodes. The uses kind directly-coupled well-wire hybrid quantum confinement (HQC) structure active medium based on InGaAs–GaAs–GaAsP material system. This special HQC constructed strain-driven indium (In)-segregation effect and growth orientation-dependent on-GaAs...
Abstract The Vela pulsar is a young neutron star with spin period of P = 89 ms and measured low braking index (˜1.4) that much less than the standard value 3 predicted by magnetic dipole radiation (MDR) model; however, its evolution has been mystery. In this article, we assume spin‐down attributed to both MDR wind flow (hereafter MDRW), find ratio about 80%, which higher Crab (25%). other words, torque dominated flow. ( ) depends on real age, where supernova remnant age assumed be an...
Abstract The taxonomical position of species the genus Tamarix (Tamaricaceae) has been criticized because their gross morphological similarities (such as slender, smooth and reddish–brown branches, grey–green foliage scale leaves), systematic relationships remain unclear. In this paper, leaf epidermal features 17 from China are studied based on micro-morphological characters cells, stomata, salt glands, papillae hairs. According to studies, features, together with character flower,...
It is well-known that thermal detuning between the gain peak and cavity mode always occurs leads to considerable loss in single-frequency laser diodes. For this issue, scientists have not found an effective solution so far. In article, we propose approach addressing problem effectively. associated with a fundamental change of quantum structure acquire supergain spectrum (i.e., both wide uniform distribution) by means self-assembled well–wire hybrid nanostructure. With spectrum, can...
Verticillium wilt, caused by the pathogenic fungus
Abstract A new cycad, Leptocycas yangcaogouensis sp. nov., was found in sediments from the Late Triassic western Liaoning, China. The pinnately compound leaves (Pseudoctenis type) are screwed a crown on stem top. leaflets linear, with parallel veins and decurrent bases rachis. leaf persistent. cataphylls intermix leaves. female cone is ovoid shape. characteristics of plant more similar to those gracilis, cycad North America, but species differs L. gracilis size its (7–8 vs. 3–5 cm diameter,...