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Thermal annealing of Si/Si1-xSbx/Si amorphous thin film tri-layer samples (x=18 and 24 at%Sb) under 100 bar Ar pressure results in an interesting pattern formation. In pictures, taken by means of cross-sectional transmission electron…

材料科学 · 物理学 2009-02-13 A. Csik , G. Erdelyi , G. A. Langer , L. Daroczi , D. L. Beke , J. Nyeki , Z. Erdelyi

We report an upper limit of 9 x 10^{12} cm-2 on the column density of water in the translucent cloud along the line of sight toward HD 154368. This result is based upon a search for the C-X band of water near 1240 \AA carried out using the…

天体物理学 · 物理学 2009-10-30 Marco Spaans , David Neufeld , Stephen Lepp , Gary J. Melnick , John Stauffer

End-to-end trained convolutional neural networks have led to a breakthrough in optical flow estimation. The most recent advances focus on improving the optical flow estimation by improving the architecture and setting a new benchmark on the…

计算机视觉与模式识别 · 计算机科学 2021-06-03 D. B. de Jong , F. Paredes-Vallés , G. C. H. E. de Croon

We report near-infrared spectroscopy of the gas giant planet HD 189733b in transit. We used the Hubble Space Telescope Wide Field Camera 3 (HST WFC3) with its G141 grism covering 1.1 um to 1.7 um and spatially scanned the image across the…

太阳与恒星天体物理 · 物理学 2015-06-22 P. R. McCullough , N. Crouzet , D. Deming , N. Madhusudhan

Detecting and delineating tiny targets in 3D brain scans is a central yet under-addressed challenge in medical imaging.In ischemic stroke, for instance, the culprit thrombus is small, low-contrast, and variably expressed across…

计算机视觉与模式识别 · 计算机科学 2026-04-02 Sofia Vargas-Ibarra , Vincent Vigneron , Hichem Maaref , Sonia Garcia-Salicetti

This work presents a macroscopic model for the flow of two immiscible and incompressible fluids within inhomogeneous porous media. At the pore scale, the flow is governed by the full Navier-Stokes equations while the phase interface…

流体动力学 · 物理学 2026-03-02 Chunhua Zhang , Peiyao Liu , Cheng Peng , Lian-Ping Wang , Zhaoli Guo

Fluorescein is perhaps the most commonly used substance to visualize tear film thickness and dynamics; better understanding of this process aids understanding of dry eye syndrome which afflicts millions of people. We study a mathematical…

定量方法 · 定量生物学 2016-11-01 Longfei Li , R. J. Braun , W. D. Henshaw , P. E. King-Smith

Understanding blood transport in cardiovascular flows is important for managing patients with cardiovascular disease. In this study, three-dimensional Lagrangian coherent structures have been extracted for the first time in both healthy…

医学物理 · 物理学 2024-01-05 Wissam Abdallah , Ahmed Darwish , Julio Garcia , Lyes Kadem

Facial features deformed according to the intended facial expression. Specific facial features are associated with specific facial expression, i.e. happy means the deformation of mouth. This paper presents the study of facial feature…

计算机视觉与模式识别 · 计算机科学 2020-11-16 Dayang Nur Zulhijah Awang Jesemi , Hamimah Ujir , Irwandi Hipiny , Sarah Flora Samson Juan

Retinal Optical Coherence Tomography (OCT), a noninvasive cross-sectional scan of the eye with qualitative 3D visualization of the retinal anatomy is use to study the retinal structure and the presence of pathogens. The advent of the…

图像与视频处理 · 电气工程与系统科学 2023-02-28 Nchongmaje Ndipenoch , Alina Miron , Zidong Wang , Yongmin Li

Elongated bubble centring$\unicode{x2013}$an obscure counter-buoyant phenomenon encountered in horizontal gas-liquid slug flow$\unicode{x2013}$is correlated with liquid viscosity and their connection is theorized. Extracting from three sets…

流体动力学 · 物理学 2026-04-28 Sean J. Perkins

WASP-52 b is an inflated hot Jupiter with a large Roche lobe filling fraction, positioned in the hot Neptune desert. Previous in-transit observations of the helium triplet at 10833 A have reported a range of excess absorption values…

地球与行星天体物理 · 物理学 2025-10-29 F. Nail , A. Oklopčić , M. MacLeod , K. Baka , S. Czesla , E. Nagel , D. Linssen , J. Matthijsse

Perfusion MRI is an important modality in many brain imaging protocols, since it probes cerebrovascular changes in aging and many diseases; however, it may not be always available. Here we introduce a method that seeks to estimate regional…

图像与视频处理 · 电气工程与系统科学 2019-11-20 Ganesh B Chand , Mohamad Habes , Sudipto Dolui , John A Detre , David A Wolk , Christos Davatzikos

We introduce OpenVLThinker, one of the first open-source large vision-language models (LVLMs) to exhibit sophisticated chain-of-thought reasoning, achieving notable performance gains on challenging visual reasoning tasks. While text-based…

计算机视觉与模式识别 · 计算机科学 2025-11-12 Yihe Deng , Hritik Bansal , Fan Yin , Nanyun Peng , Wei Wang , Kai-Wei Chang

The high compliance of the urinary bladder during filling is essential for its proper function, enabling it to accommodate significant volumetric increases with minimal rise in transmural pressure. This study aimed to elucidate the physical…

Spatially resolved profiles of the Halpha and [NII] lines have been obtained at unprecendented signal--to--noise ratios over the outflowing lobes of the high--excitation, poly--polar planetary nebula NGC~6302. A deep image in the light of…

天体物理学 · 物理学 2008-11-26 J. Meaburn , J. A. Lopez , W. Steffen , M. F. Graham , A. J. Holloway

This study investigates the upward transport of waterborne pollutants from a lower container to an upper container through vertically falling water streams. While previous analyses have primarily focused on inclined channels, we extend the…

流体动力学 · 物理学 2025-04-24 D. Suárez-Fontanella , A. Cabo Montes de Oca

We report an approach to fully visualize the flow of two immiscible fluids through a model three-dimensional (3D) porous medium at pore-scale resolution. Using confocal microscopy, we directly image the drainage of the medium by the…

流体动力学 · 物理学 2013-01-22 Amber T. Krummel , Sujit S. Datta , Stefan Münster , David A. Weitz

Broad absorption line (BAL) features in quasar spectra reveal an unambiguous signature of energetic outflows from central supermassive black holes, and thus BAL quasars are prime targets for investigating the potential process of luminous…

星系天体物理 · 物理学 2020-03-04 Hyunseop Choi , Karen M. Leighly , Donald M. Terndrup , Sarah C. Gallagher , Gordon T. Richards

In a dry granular flow, size segregation behave differently for a mixture containing a few large beads with a size ratio (S) above 5 (Thomas, Phys.Rev.E 62,96(2000)). For moderate large S, large beads migrate to an intermediate depth in the…

软凝聚态物质 · 物理学 2018-02-14 Nathalie Thomas , Umberto D'ortona