Reflection and transmission of the incident wave due to impurities in the bead chain

Du, Wen-Qing; Yang, Yunhua; Han, Jie; Duan, Wen‐Shan

doi:10.1007/s12648-019-01572-x

Cited by 2 publications

(4 citation statements)

References 32 publications

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“…The parameters of the plexiglass bead are as follows: Young's modulus E = 71.7 GPa, Poisson's ratio σ = 0.23, density ρ = 2.5 × 10 3 kg/m 3 , and radius R = 2.5 mm. [30] Two determined factors for the space-phase shift after collision are the immediate space-phase shift at the collision center and the propagation velocity difference between RSW and post-RSSW. When the collision of HSWs occurs in fluid, the SWs can recover their original incident waveform after the collision.…”

Section: Space-phase Shiftmentioning

confidence: 99%

“…[14] Following his pioneering work, a large number of activities involving SWs in GC systems have been focused on the excitation of SWs, the reflection and transmission of SWs at an interface, and the interaction of SWs. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] Therefore, comparing the traveling dynamics between integrable and nonintegrable systems is of great significance.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear interaction of head-on solitary waves in integrable and nonintegrable systems

Zhang 张,

Liu 刘,

Jiao 矫

et al. 2024

Chinese Phys. B

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This study numerically investigates the nonlinear interaction of head-on solitary waves in a granular chain (a nonintegrable system) and compares the simulation results with the theoretical results in fluid (an integrable system). Three stages (i.e., pre-in-phase traveling stage, central-collision stage, and post-in-phase traveling stage) are identified to describe the nonlinear interaction processes in the granular chain. The nonlinear scattering effect occurs in the central-collision stage, which decreases the amplitude of incident solitary waves. Compared with the leading-time phase in the incident and separation collision processes, the lagging-time phase in the separation collision process is smaller. This asymmetrical nonlinear collision results in an occurrence of leading phase shifts of time and space in the post-in-phase traveling stage. We next find that solitary wave amplitude does not influence the immediate space-phase shift in the granular chain. The space-phase shift of the post-in-phase traveling stage is only determined by measurement position rather than wave amplitude. The results are reversed in the fluid. An increase in solitary wave amplitude leads to decreased attachment, detachment and residence times for granular chain and fluid. For the immediate time-phase shift, leading and lagging phenomena appear in the granular chain and the fluid, respectively. These results offer new knowledge for designing mechanical metamaterials and energy-mitigating systems.

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Section: Space-phase Shiftmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nonlinear interaction of head-on solitary waves in integrable and nonintegrable systems

Zhang 张,

Liu 刘,

Jiao 矫

et al. 2024

Chinese Phys. B

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show abstract

“…The parameters of the plexiglass bead are as follows: Young's modulus E = 71.7 GPa, Poisson's ratio σ = 0.23, density ρ = 2.5 × 10 3 kg/m 3 and radius R = 2.5 mm [30]. Two determined factors for the space−phase shift after collision are the immediate space−phase shift at the collision center and the propagation velocity difference between RSW and post−RSSW.…”

Section: Space−phase Shiftmentioning

confidence: 99%

“…For the latter, Nesterenko first found the existence of SW in a sonic−vacuum GC whose width is independent of the wave amplitude [15]. Following his pioneered work, massive activities involving SWs in GC are focused on the excitation of SW, the reflection and transmission of SW at an interface, and the interaction of SWs [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Therefore, comparing the traveling dynamics between integrable and nonintegrable systems is of great significance.…”

Section: Introductionmentioning

confidence: 99%

Introduction to the Department of Cardiology in Nanjing First Hospital of Nanjing Medical University, China

Zhang

Chen

2020

European Heart Journal

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Reclosure of ruptured incision after peroral endoscopic myotomy using endoloops and metallic clipsSince Inoue et al. introduced peroral endoscopic myotomy (POEM) into a clinic to treat esophageal achalasia in 2010, the procedure has been carried out in many countries around the world. 1 As more and more POEM is being done, associated technical difficulties and complications may occur. 2 To our knowledge, the present study is the first to report incision rupture after POEM.A 37-year-old man presented to our academic center after experiencing 25 years of dysphagia and 2 months of exacerbation. Barium swallow examination and esophageal manometry diagnosed the patient with type I esophageal achalasia and he agreed to receive POEM.POEM was carried out using the standard technique. After the operation, the patient received routine postoperative care. On the third day after the procedure, the patient had a fever (38.9°C, white blood cell count 18.24 × 10 9 /L, % neutrophils 95.3%) and X-ray showed the absence of several metal clips at the proximal end of the longitudinal incision which revealed the incision rupture.Gastroesophageal endoscopy showed that the middle and proximal parts of the incision was ruptured. It was not possible to reclose the incision with routine clips because of the swollen mucosa around the defect. On endoscopy, an endoloop was inserted and snared the remaining clips in the distal part. In the middle, four clips were anchored onto the defect margins at full thickness and another endoloop was inserted to snare the clips tightly. The same procedure was done in the proximal part (Figs 1,2). After monitoring the patient's condition for several days, he was discharged without any complaints or complications.In the present study, we propose reclosure of a mucosal incision after POEM using conventional endoloops and hemostatic clips. It could reclose the incision regardless of the swollen tissue or the size of the longitudinal incision.

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Reflection and transmission of the incident wave due to impurities in the bead chain

Cited by 2 publications

References 32 publications

Nonlinear interaction of head-on solitary waves in integrable and nonintegrable systems

Nonlinear interaction of head-on solitary waves in integrable and nonintegrable systems

Introduction to the Department of Cardiology in Nanjing First Hospital of Nanjing Medical University, China

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