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Articles by Zhen Long
Lightweight SAR building segmentation via enhanced multi-scale context modeling and bidirectional guided feature fusion
Abstract Accurate building extraction from synthetic aperture radar (SAR) imagery is important for urban mapping, disaster assessment, and remote-sensing interpretation, but remains difficult because speckle noise, heterogeneous scattering, radar shadow, weak texture, and ambiguous building boundaries can degrade pixel-level predictions. At the same time, heavy segmentation networks are difficult to deploy in computation-constrained settings.
Iridium‐Catalyzed Enantioselective Allylation of Alkynylboronates to Access Chiral 1,4‐Dienes
Conflicts of Interest The authors declare no conflict of interest. Data Availability Statement The data that support the findings of this study are available in the supplementary material of this article.
Intravital observation of neuronal and immune cell dynamics in the developing mammalian brain
Keywords intravital imaging brain development neuronal migration microglial surveillance neuro-vascular interactions neuro-immune interactions Introduction The mammalian cerebral cortex is a complex, highly organized structure that is composed of neurons (excitatory glutamatergic and inhibitory GABAergic neurons) and non-neuronal cells (macroglial, immune, and endothelial cells).1,2,3,4,5,6 During cortical development, neurons originate from progenitors within the ventricular zone (VZ) inside...
Agnostic Fundamental Analysis via Machine Learning
References , and . 1998. “Abnormal Returns to a Fundamental Analysis Strategy.” Accounting Review 73: 19–45. , and . 2018. “Agnostic Fundamental Analysis Works.” Journal of Financial Economics 128: 125–147. , and . 2021. “Global Market Inefficiencies.” Journal of Financial Economics 139: 234–259. 1979. “Imperfect Information, Dividend Policy, and ‘the Bird in the Hand’ Fallacy.” Bell Journal of Economics 10: 259–270. 1997. “On Persistence in Mutual Fund Performance.” Journal of Finance 52: 57–82. , , and .
Predictive Modeling of Endograft Limb Occlusion After Endovascular Aneurysm Repair: A Propensity Score Matching Analysis
Discussion In this study, we used PSM and Lasso regression analysis to develop a predictive model for postoperative ELO in patients with AAA undergoing EVAR. Our analysis identified several significant factors contributing to the incidence of ELO, including the DIS, surgical approaches, and iliac artery stent oversizing. The position of the stent in the external iliac artery independently predicts ELO and directly indicates a high-risk situation.
Effect of CO2 Thickeners on CH4-CO2 Replacement in Hydrate-Bearing Sediment
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High insulation resistivity and low dielectric loss in (Ta, Al)‐codoped BaTiO3 colossal permittivity materials
Supporting Information Filename Description jace19775-sup-0001-SuppMat.docx144 KB Supporting Information REFERENCES 1, , , , , . Colossal permittivity in ultrafine grain size BaTiO3-x and Ba0.95La0.05TiO3-x materials. Adv Mater. 2008; 20: 551–555. 2, , , , , . Enhanced dielectric and mechanical properties of CaCu3Ti4O12/Ti3C2Tx MXene/silicone rubber ternary composites. Ceram Int. 2022; 48: 6116–6123. 3, , , , , , et al.
[2305.00716] Adaptively Topological Tensor Network for Multi-view Subspace Clustering
arXiv:2305.00716 (cs) Download a PDF of the paper titled Adaptively Topological Tensor Network for Multi-view Subspace Clustering, by Yipeng Liu and 4 other authors Download PDF Submission history From: Yingcong Lu [ view email] [v1] Mon, 1 May 2023 08:28:33 UTC (14,031 KB) Bibliographic Tools Bibliographic Explorer Toggle Bibliographic Explorer () Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media DagsHub Toggle...
Ultrahigh energy-storage density of a lead-free 0.85Bi0.5Na0.5TiO3-0.15Ca(Nb0.5Al0.5)O3 ceramic under low electric fields
Ultrahigh energy-storage density of a lead-free 0.85Bi0.5Na0.5TiO3–0.15Ca(Nb0.5Al0.5)O3 ceramic under low electric fields Jiangtao Fan, a Gang He,*a Zhenzhu Cao,b Yongfan Cao,b Zhen Longa and Zhanggui Hua Abstract The low energy density of dielectric ceramics at low electric fields is a limiting factor for their application in size-reduced integrated electronic devices.
Multiscale analysis of the hydrate based carbon capture from gas mixtures containing carbon dioxide
Abstract To reveal the kinetic performance of gas molecules in hydrate growth, hydrate formation from pure CO2, flue gas, and biogas was measured using in-situ Raman and macroscopic methods at 271.6 K. In the in-situ Raman measurements, Raman peaks of gases in the hydrate phase were characterised and normalised by taking the water bands from 2800 to 3800 cm−1 as a reference, whose line shapes were not found to have a noticeable change in the conversion from Ih ice to sI hydrate.
Investigation on Methane Hydrate Formation in Water-based Drilling Fluid
To guarantee the flow assurance of drilling fluid in deep-water drilling, the inhibitory effect of PVP-K90 on methane hydrate formation was measured at 275.15 and 277.15 K with an initial pressure of 6, 8, and 10 MPa. The effect of PVP-K90 on the rheological properties of drilling fluid was also measured. Results showed that the apparent viscosity enhanced from 27 and 114 mPa·s as the concentration of PVP-K90 increased up to 2.0 wt %, which greatly weakened the fluidity of the drilling fluid.
Evaluation of Kinetic Inhibition of Methane Hydrate Formation by a Copolymer of N-Vinylcaprolactam with 1-Vinylimidazole
This study investigated methane hydrate inhibition by a new polyvinyl lactam-based kinetic hydrate inhibitor (KHI) by determining the maximum subcooling temperature, induction time, and growth rate using a high-pressure sapphire reactor.
Kinetic Measurements on CO2 Adsorption and Release Using TBAB·38H2O Hydrates as Adsorbents
To avoid large energy input during crystallization from TBAB solutions, the solid TBAB hydrates were directly used for carbon capture in this work. The CO2 adsorption and release process of TBAB·38H2O hydrate were measured by in situ Raman and macroscopic method. Results showed that TBAB·38H2O hydrates converted to nCO2·TBAB·38H2O hydrate with no significant structural change.
Kinetic Measurements on CO2 Hydrate Formation in the Presence of Tetra-n-butyl Ammonium Bromide
Ionic clathrate hydrates are promising materials for hydrate-based CO capture due to their mild forming conditions. In this work, hydrate crystallizations from different TBAB solutions were measured. The effect of TBAB concentration on hydrate nucleation time, hydrate growth, and gas storage capacity were evaluated. The TBAB concentration ranging from 0.3 to 7.5 mass % was found to be ideal for efficient hydrate formation.
Phase Equilibria and the Crystallographic Properties of TBAB-CO2 Semiclathrate Hydrates
Understanding the crystal properties of semiclathrate hydrates is important for their potential application in gas storage and separation. In this work, the phase equilibria of TBAB–CO hydrates were measured and hydrates formed from the solutions where TBAB concentrations ranged from 0.01 to 0.32 mass fraction were analyzed using Raman and powder X-ray diffraction.
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